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John Betts - Fine Minerals, New York, NY
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Mineral Species Quick Reference Guide


Below is a listorted by mineral name of 900 commonly available minerals and mineral synonyms. For each mineral species we provided a quick reference of chemical formula, mineral group or mineral series, mineral class and, subclass, and the Dana locality or type locality where the original mineral was first found and described.

Each entry is formatted as:
Mineral Species: Formula (Mineral group or series, if any) Class: major chemical category based on anion, Subclass: subsection of class based on chemistry. Type Locality (=the original locality where first described.)

Where possible, links are provided to the our mineral galleries of specimens for sale.  At any one time, a mineral species may or may not be available for sale. But the link will get you to where they should be located at this site.

Use "Control-F" or your browser Find to locate the mineral you are searching for.

Also stee: List of Water Soluble Mineral Species


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Minerals For Sale

Abukumalite: Britholite-(Y) (Varietal name).
Acanthite: Ag2S Class: Sulfide.
Achroite: Colorless elbaite (Varietal name).
Actinolite: Ca2(Mg,Fe)5Si8O22(OH)2 (Amphibole) Class: Silicate, Subclass: Inosilicate.
Adamite: Zn2(AsO4)(OH) (Adamite) Class: Arsenate, Subclass: Hydroxyl Arsenate. Type Locality: Chañarcillo, Chile.
Adularia: Colorless variety of orthoclase (Varietal name).
Aegirine: NaFeSi2O6 (Pyroxene) Class: Silicate, Subclass: Inosilicate. Type Locality: Skaadoe, Brevig, Norway.
Ainalite: Cassiterite with up to 9% Ta2O5 (Varietal name).
Ajoite: (K,Na)Cu7AlSi9O24(OH)6+3H2O Class: Silicate. Type Locality: New Cornelia mine, Ajo, Pima Co., Arizona, USA.
Albite: NaAlSi3O8 (Feldspar) Class: Silicate, Subclass: Tektosilicate.
Aldanite: Thorianite with U and Pb (Varietal name).
Alexandrite: Gem variety of chrysoberyl (Varietal name).
Allanite-(Ce): (Ce,Ca,Y)2(Al,Fe)3(SiO4)3(OH) (Epidote) Class: Silicate, Subclass: Sorosilicate. Type Locality: Iglorsoit, Greenland.
Allanite-(La): (La,Ca,)2(Al,Fe)3(SiO4)3(OH) (Epidote) Class: Silicate, Subclass: Sorosilicate. Type Locality: Karelia (N), Russia, USSR.
Allanite-(Y): (Y,Ce,Ca)2(Al,Fe)3(SiO4)3(OH) (Epidote) Class: Silicate, Subclass: Sorosilicate.
Alleghanyite: Mn5(SiO4)2(OH)2 (Humite) Class: Silicate, Subclass: Nesosilicate. Type Locality: Bold Hill, Alleghany Co., North Carolina, USA.
Allemontite: Mixture of stibarsen with As or Sb (Varietal name).
Allenite: Pentahydrite (Varietal name).
Allevardite: Rectorite (Varietal name).
Allophane: Al2SiO5+nH2O Class: Silicate. Type Locality: Gräfenthal, Saalfeld (near), Thüringen, Germany.
Almandine: Fe3Al2(SiO4)3 (Garnet) Class: Silicate, Subclass: Nesosilicate. Type Locality: Alabanda, Caria, Aydin, Turkey.
Alstonite: BaCa(CO3)2 Class: Carbonate. Type Locality: Brownley Hill mine, Alston (near), Cumberland, England.
Aluminium: Al Class: Native Element, Subclass: Metals. Type Locality: Tsepochechnyi intrusive, Siberia, Russia, USSR.
Alunite: KAl3(SO4)2(OH)6 (Alunite) Class: Sulfate. Type Locality: Tolfa, Roma (near), Italy.
Alvarolite: Mangantantalite (Varietal name).
Amazonite: Green to blue green microcline (Varietal name).
Amblygonite: (Li,Na)Al(PO4)(F,OH) (Amblygonite) Class: Phosphate, Subclass: Fluorine-Hydroxyl Phosphate. Type Locality: Chur4sdorf and Arnsdorf, Penig, Sachsen, Germany.
Amethyst: Purple or violet quartz (Varietal name).
Amosite: Asbestiform ferro-gedrite (Varietal name).
Amphibole: Group name.
Analcime (cubic): NaAlSi2O6+H2O (Zeolite) Class: Silicate, Subclass: Tektosilicate. Type Locality: Cyclopean Islands, Catania (near), Sicily, Italy.
Analcime (monoclinic): NaAlSi2O6+H2O (Zeolite) Class: Silicate, Subclass: Tektosilicate. Type Locality: Husa u Marcinová, Cechy (Bohemia), Czech Republic (Czechoslovakia).
Anapaite: Ca2Fe(PO4)2+4H2O Class: Phosphate. Type Locality: Anapa, Taman Peninsula, Russia, USSR.
Anatase: TiO2 Class: Oxide. Type Locality: St. Christope, Bourg d'Oisans, Isere, France.
Ancylite-(Ce): SrCe(CO3)2(OH)+H2O Class: Carbonate. Type Locality: Narsarsuk, Greenland (S).
Ancylite-(La): SrLa(CO3)2(OH)+H2O Class: Carbonate.
Andalusite: Al2SiO5 Class: Silicate, Subclass: Nesosilicate. Type Locality: Andalusia, Spain.
Andesine: (Na,Ca)Al(Al,Si)Si2O8 (Intermediate in plagioclase series) (Feldspar) Class: Silicate, Subclass: Tektosilicate. Type Locality: Marmato, Cauca, Colombia (Andes Mts.).
Andradite: Ca3Fe2(SiO4)3 (Garnet) Class: Silicate, Subclass: Nesosilicate.
Andrewsite: Discredited (Varietal name).
Anglesite: PbSO4 (Barite) Class: Sulfate, Subclass: Anhydrous Sulfate. Type Locality: Parys mine, Anglesey, Wales.
Anhydrite: CaSO4 Class: Sulfate, Subclass: Anhydrous Sulfate. Type Locality: Hall, Innsbruck (near), Tyrol, Austria.
Ankerite: Ca(Fe,Mg,Mn)(CO3)2 (Dolomite) Class: Carbonate. Type Locality: Styria, Austria.
Annabergite: Ni3(AsO4)2+8H2O (Vivianite) Class: Arsenate, Subclass: Hydrated Arsenate. Type Locality: Annaberg, Sachsen (Saxony), Germany.
Annite: KFe3(Si3Al)O10(OH,F)2 (Mica) Class: Silicate, Subclass: Phyllosilicate. Type Locality: Cape Anne, Essex Co., Massachusetts, USA.
Anorthite: CaAl2Si2O8 (Feldspar) Class: Silicate, Subclass: Tektosilicate. Type Locality: Monte Somma, Mt. Vesuvius, Napoli, Campania, Italy.
Anorthoclase: (Na,K)AlSi3O8 (Feldspar) Class: Silicate, Subclass: Tektosilicate. Type Locality: Pantelleria Island, Italy.
Anthophyllite: (Mg,Fe)7Si8O22(OH)2 (Amphibole) Class: Silicate, Subclass: Inosilicate. Type Locality: Kongsberg, Norway.
Antigorite: (Mg,Fe)3Si2O5(OH)4 (Kaolinite-Serpentine) Class: Silicate. Type Locality: Valle di Antigorio, Domodossola, Piemonte, Italy.
Antimonite: Stibnite (Varietal name).
Antimony: Sb (Arsenic) Class: Native Element, Subclass: Semi-Metals.
Antlerite: Cu3(SO4)(OH)4 Class: Sulfate, Subclass: Hydrated Sulfate. Type Locality: Antler Mine, Mohave Co., Arizona, USA.
Apatite: Group name.
Apophyllite: Group name, see fluorapophyllite and hydroxylapophyllite.
Aquamarine: Blue to greenish blue beryl (Varietal name).
Aragonite: CaCO3 (Aragonite) Class: Carbonate. Type Locality: Molina and Valencia, Migranilla (near), Aragon, Spain.
Aravaipaite: Pb3AlF9+H2O. Type Locality: Grand Reef Mine, Laurel Canyon, Aravaipa mining dist., Graham Co., Arizona, USA.
Arfvedsonite: Na3(Fe,Mg)4FeSi8O22(OH)2 (Amphibole) Class: Silicate, Subclass: Inosilicate. Type Locality: Kangerdluarsuk, Ilímaussaq intrusive, Greenland (S).
Argentite: Ag2S Class: Sulfide. Type Locality: Dimorphous with acanthite, stable only above 177°C.
Arizonite: Pseudorutile (Varietal name).
Arnimite: Antlerite (Varietal name).
Arrojadite: KNa4CaMn4Fe10Al(PO4)12(OH,F)2. Type Locality: Serra Branca pegmatite, Picuhy, Paraiba, Brazil.
Arsenic: As (Arsenic) Class: Native Element, Subclass: Semi-Metals.
Arsenolite: As2O3 Class: Oxide.
Arsenopyrite: FeAsS (Arsenopyrite) Class: Sulfide.
Artinite: Mg2(CO3)(OH2)+3H2O Class: Carbonate. Type Locality: Campo Franscia, Val Lanterna, Val Malenco, Val Tellina, Sondrio, Lombardia, Italy.
Ascharite: Szaibelyite (Varietal name).
Ashanite: Ixiolite (Varietal name).
Ashtonite: Mordenite (Varietal name).
Astrakhanite: Bloedite (Varietal name).
Astrolite: Muscovite (Varietal name).
Astrophyllite: (K,Na)3(Fe,Mn)7Ti2Si8O24(O,OH)7 (Astrophyllite) Class: Silicate. Type Locality: Loven Island, Brevik (near), Langesundfjord, Norway.
Atacamite: Cu2Cl(OH)3 (Atacamite) Class: Halide. Type Locality: Atacama, Chile.
Attacolite: Attakolite (Varietal name).
Attapulgite: Palygorskite (Varietal name).
Augelite: Al2(PO4)(OH)3 Class: Phosphate, Subclass: Hydroxyl Phosphate. Type Locality: Vestanå mine, Nästum, Kristianstad, Sweden.
Augite: (Ca,Mg,Fe)2Si2O6 (Pyroxene) Class: Silicate, Subclass: Inosilicate.
Aurichalcite: (Zn,Cu)5(CO3)2(OH)6 Class: Carbonate. Type Locality: Loktevsk, Altai, Siberia, Russia, USSR.
Austinite: CaZnAsO4(OH) (Adelite) Class: Arsenate, Subclass: Hydroxyl Arsenate. Type Locality: Gold Hill, Tooele Co., Utah, USA.
Autunite: Ca(UO2)2(PO4)2+10-12H2O (Autunite) Class: Phosphate, Subclass: Hydrous Phosphate. Type Locality: L'Ouche d'Jau, Saint-Symphorien-de-Marmagne, Autun, Saône-et-Loire, France.
Axinite: Group name.
Azurite: Cu3(CO3)2(OH)2 Class: Carbonate.

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Babingtonite: Ca2(Fe,Mn)FeSi5O14(OH) Class: Silicate, Subclass: Inosilicate. Type Locality: Arendal, Norway.
Baddeleyite: ZrO2 Class: Oxide. Type Locality: Kollonnagam, Rakwana, Sri Lanka.
Barbierite: Microcline (Varietal name).
Barite: BaSO4 (Barite) Class: Sulfate, Subclass: Anhydrous Sulfate.
Barkevikite: Ferrohornblende (Varietal name).
Barrerite: (Na,K,Ca)2Al2Si7O18+7H2O (Zeolite) Class: Silicate. Type Locality: Cagliari, Capo Pula, Efisia Tower (S), Sardegna (Sardinia), Italy.
Barytoanglesite: Anglesite (Varietal name).
Barytocelestine: Celestite (Varietal name).
Bassanite: 2CaSO4+H2O Class: Sulfate. Type Locality: Mt. Vesuvius, Napoli, Campania, Italy.
Baumite: Mixture of serpentines and chlorites (Varietal name).
Bavenite: Ca4Be2Al2Si9O26(OH)2 Class: Silicate.
Bayldonite: PbCu3(AsO4)2(OH)2+H2O Class: Arsenate. Type Locality: Penberthy Creft mine, St. Hilary, Cornwall, England.
Bazzite: Be3(Sc,Al)2Si6O18 Class: Silicate. Type Locality: Baveno, Lago Maggiore, Piemonte, Italy.
Beckelite: Britholite (Varietal name).
Beidellite: (Na,Ca0.5)0.3Al2(Si,Al)4O10(OH)2+nH2O (Smectite) Class: Silicate. Type Locality: Beidell, Saguache Co., Colorado, USA.
Bementite: Mn8Si6O15(OH)10 Class: Silicate. Type Locality: Franklin Furnace, Sussex Co., New Jersey, USA.
Benitoite: BaTiSi3O9 Class: Silicate, Subclass: Cyclosilicate. Type Locality: Benito Gem mine, Diablo Range, San Benito Co., California, USA.
Benstonite: (Ba,Sr)6(Ca,Mn)6Mg(CO3)13 Class: Carbonate.
Bertrandite: Be4Si2O7(OH)2 Class: Silicate. Type Locality: Petit-Port and Barbin, Nantes, Loire-Atlantique, France.
Beryl: Be3Al2Si6O18 Class: Silicate, Subclass: Cyclosilicate.
Beryllonite: NaBePO4 Class: Phosphate, Subclass: Anhydrous Phosphate. Type Locality: McKean Mt., Stoneham (near), Oxford Co., Maine, USA.
Beta-Quartz: SiO2 Class: Silicate. Type Locality: Stable between 573° and 870°C; polymorphous with coesite, cristobalite, stishovite and tridymite, D=approximate.
Betafite: (Ca,Na,U)2(Ti,Nb,Ta)2O6(OH) (Pyrochlore) Class: Oxide. Type Locality: Betafo, Madagascar.
Bideauxite: Pb2AgCl3(F,OH)2. Type Locality: Mammoth-St. Anthony Mine, Tiger, Pinal Co., Arizona, USA.
Biotite: K(Mg,Fe)3(Al,Fe)Si3O10(OH,F)2 (Mica) Class: Silicate, Subclass: Phyllosilicate.
Bisbeeite: Mixture of chrysocolla and plancheite (Varietal name).
Bismuth: Bi (Arsenic) Class: Native Element, Subclass: Semi-Metals.
Bismuthinite: Bi2S3 Class: Sulfide.
Bismutite: Bi2(CO3)O2 Class: Carbonate. Type Locality: Arme Hulfe mine, Ullersreuth, Vogtland, Sachsen (Saxony), Germany.
Bixbyite: (Mn,Fe)2O3 Class: Oxide. Type Locality: Maynard's claim, Thomas Range, Delta (near), Juab Co., Utah, USA.
Bjarebyite: (Ba,Sr)(Mn,Fe,Mg)2Al2(PO4)3(OH)3 (Bjarebyite) Class: Phosphate. Type Locality: Palermo pegmatite, North Groton, New Hampshire, USA.
Blanchardite: Brochantite (Varietal name).
Blödite: Na2Mg(SO4)2+4H2O Class: Sulfate. Type Locality: Ischl, Austria.
Boléite: Pb26Ag10Cu24Cl62(OH)48+3H2O Class: Halide. Type Locality: Boléo, Santa Rosalia (near), Baja California, Mexico.
Boltwoodite: (H3O)K(UO2)SiO4 Class: Silicate. Type Locality: Pick's Delta mine, San Rafael Swell, Emery Co., Utah, USA.
Boracite: Mg3B7O13Cl Class: Borate. Type Locality: Lüneberg, Hannover, Germany.
Borax: Na2B4O5(OH)4+8H2O Class: Borate, Subclass: Hydrated Borate. Type Locality: Ladakh, Kashmir and Rudok, Tibet.
Bornite: Cu5FeS4 Class: Sulfide.
Bostwickite: CaMn6Si3O16+7H2O Class: Silicate. Type Locality: Franklin, Sussex Co., New Jersey, USA.
Botryogen: MgFe(SO4)2(OH)+7H2O Class: Sulfate. Type Locality: Falun, Kopparberg, Sweden.
Boulangerite: Pb5Sb4S11 Class: Sulfosalt. Type Locality: Molières, Gard, France*.
Bournonite: PbCuSbS3 Class: Sulfosalt. Type Locality: Wheal Boys, St. Endellion, Cornwall, England.
Bravoite (Discredited Species): (Ni,Fe)S2 (Pyrite) Class: Sulfide. Type Locality: Mina Ragra (Minasragra), Cerro de Pasco (near), Pasco dept., Peru.
Brazilianite: NaAl3(PO4)2(OH)4 Class: Phosphate, Subclass: Hydroxyl Phosphate. Type Locality: Divino River, Rio Doce and Rio Sao Matheus, Minas Gerais, Brazil.
Breithauptite: NiSb (Nickeline) Class: Antimonide. Type Locality: St. Andreasberg, Harz, Germany.
Brewsterite: (Sr,Ba,Ca)Al2Si6O16+5H2O (Zeolite) Class: Silicate. Type Locality: Strontian, Argyllshire, Scotland.
Brochantite: Cu4(SO4)(OH)6 Class: Sulfate, Subclass: Hydrated Sulfate.
Bromargyrite: AgBr Class: Halide.
Bromite: Alstonite (Varietal name).
Bromyrite: Bromargyrite (Varietal name) Class: Halide.
Bronzite: Ferroan variety of enstatite (Varietal name).
Brookite: TiO2 Class: Oxide. Type Locality: Prenteg, Tremadog, Caernarvonshire (Gwynedd), Wales.
Brucite: Mg(OH)2 (Brucite) Class: Oxide, Subclass: Hydroxide. Type Locality: Hoboken, Hudson Co., New Jersey, USA.
Buddingtonite: (NH4)AlSi3O8+0.5H2O (Feldspar) Class: Silicate, Subclass: Tektosilicate. Type Locality: Sulphur Bank quicksilver mine, Lake Co., California, USA.
Buergerite: NaFe3Al6(BO3)3Si6O21F (Tourmaline) Class: Silicate, Subclass: Cyclosilicate. Type Locality: Mexquitic, San Luis Potosí, Mexico.
Bustamite: (Mn,Ca)2Si2O6 Class: Silicate. Type Locality: Franklin Furnace, Sussex Co., New Jersey, USA.
Byssolite: Fibrous (asbestiform) actinolite-tremolite, or other amphibole (Varietal name).
Bytownite: (Ca,Na)(Si,Al)4O8 (Feldspar) Class: Silicate, Subclass: Tektosilicate. Type Locality: Ottawa (Bytown), Ontario, Canada.

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Cacoxenite: (Fe,Al)25(PO4)17O6(OH)12+75H2O Class: Phosphate. Type Locality: Hrbek mine, Sv. Dobrotivá, Cechy (Bohemia), Czech Republic (Czechoslovakia).
Cahnite: Ca2B(AsO4)(OH)4 Class: Arsenate. Type Locality: Franklin Furnace, Sussex Co., New Jersey, USA.
Cairngorm: Smoky quartz (Varietal name).
Calamine: Hemimorphite (Varietal name).
Calaverite: AuTe2 Class: Telluride. Type Locality: Stanislaus Mine, Calaveras Co., California, USA.
Calcite: CaCO3 (Calcite) Class: Carbonate.
Caledonite: Pb5Cu2(CO3)(SO4)3(OH)6 Class: Sulfate, Subclass: Compound Sulfate. Type Locality: Wanlockhead, Leadhills, Lanarkshire, Scotland.
Calomel: HgCl Class: Halide. Type Locality: Landsberg (Moschellandsberg), Obermoschel (near), Rheinland-Pfalz, Germany.
Calumetite: Cu(OH,Cl)2+2H2O. Type Locality: Centennial Mine, Calumet, Houghton Co., Michigan, USA.
Canavesite: Mg2(CO3)(HBO3)+5H2O. Type Locality: Brosso Fe mine, Canavese dist, Torino, Piemonte, Italy.
Cancrinite: Na6Ca2Al6Si6O24(CO3)2 (Cancrinite) Class: Silicate, Subclass: Tektosilicate.
Canfieldite: Ag8SnS6 Class: Sulfosalt. Type Locality: Avilargus, La Paz (near), Bolivia.
Caratiite: Discredited (Varietal name).
Carletonite: KNa4Ca4Si8O18(CO3)4(OH,F)+H2O. Type Locality: Mont Saint-Hilaire, Rouville Co., Québec, Canada.
Carnasurtite: Karnasurtite (Varietal name).
Carnotite: K2(UO2)2V2O8+3H2O. Type Locality: Montrose Co., Colorado, USA.
Carrollite: Cu(Co,Ni)2S4 (Linnaeite) Class: Sulfide. Type Locality: Patapsco mine, Finksburg, Carroll Co., Maryland, USA.
Cassiterite: SnO2 (Rutile) Class: Oxide.
Catapleiite: Na2ZrSi3O9+2H2O Class: Silicate. Type Locality: Låven, Langesundfjord, Norway.
Catophorite: Katophorite (Varietal name).
Cavansite: Ca(VO)Si4O10+4H2O Class: Silicate. Type Locality: Charles W. Chapman Quarry, Columbia Co., Oregon, USA ; Lake Owyhee State Park, Malheur Co., Oregon, USA.
Celadonite: K(Mg,Fe)(Fe,Al)Si4O10(OH)2 (Mica) Class: Silicate, Subclass: Phyllosilicate. Type Locality: Planitz, Zwickau, Poland.
Celestine: SrSO4 (Barite) Class: Sulfate, Subclass: Anhydrous Sulfate. Type Locality: Bellwood, Blair Co., Pennsylvania, USA.
Cenosite: Kainosite (Varietal name).
Cerargyrite: Chlorargyrite (Varietal name) Class: Halide.
Cerussite: PbCO3 (Aragonite) Class: Carbonate. Type Locality: Vicentin, Italy.
Cervantite: Sb2O4 Class: Oxide. Type Locality: Cervantes, Galicia, Spain.
Chabazite: CaAl2Si4O12+6H2O (Zeolite) Class: Silicate, Subclass: Tektosilicate.
Chalcanthite: CuSO4+5H2O (Chalcanthite) Class: Sulfate.
Chalcedony: Cryptocrystalline variety of quartz (Varietal name).
Chalcocite: Cu2S Class: Sulfide.
Chalcopyrite: CuFeS2 (Chalcopyrite) Class: Sulfide.
Chalcosiderite: CuFe6(PO4)4(OH)8+4H2O (Turquoise) Class: Phosphate, Subclass: Hydrous Hydroxyl Phosphate. Type Locality: Sayn (Siegen), Westphalia, Germany; and West Phoenix mine, Cornwall, England [ neotype locality).
Chalcotrichite : Capillary cuprite (Varietal name).
Chalybite: Siderite (Varietal name).
Chamosite: (Fe,Mg)5Al(Si3Al)O10(OH,O)8 (Chlorite) Class: Silicate, Subclass: Phyllosilicate. Type Locality: Chamoson, St. Maurice, Valais (Wallis), Switzerland.
Charoite: (K,Na)5(Ca,Ba,Sr)8Si8O46(OH,F)+nH2O Class: Silicate. Type Locality: Charo River, Murun Massif, Aldan (NE), Yakutia, Russia, USSR.
Chessylite: Azurite (Varietal name).
Chiastolite: Andalusite (Varietal name).
Childrenite: FeAl(PO4)(OH)2+H2O Class: Phosphate. Type Locality: Tavistock (near), Devon, England.
Chloanthite: Nickel-skutterudite (Varietal name).
Chlorapatite: Ca5(PO4)3Cl (Apatite) Class: Phosphate, Subclass: Anhydrous Phosphate. Type Locality: Norway.
Chlorargyrite: AgCl Class: Halide. Type Locality: Marienberg, Sachsen, Germany.
Chlorastrolite: Pumpellyite (Varietal name).
Chlorite: Group name.
Chloropal: Nontronite (Varietal name).
Chlorotile: Agardite (Varietal name).
Chondrodite: (Mg,Fe)5(SiO4)2(F,OH)2 (Humite) Class: Silicate, Subclass: Nesosilicate. Type Locality: Pargas, Finland.
Chromatite: CaCrO4. Type Locality: Jerusalem-Jericho Highway, Jordan.
Chromite: FeCr2O4 (Spinel) Class: Oxide.
Chromium: Cr Class: Native Element, Subclass: Metals. Type Locality: Unspecified locality, Sichuan, China.
Chrysoberyl: BeAl2O4 Class: Oxide. Type Locality: Brazil.
Chrysocolla: (Cu,Al)2H2Si2O5(OH)4+nH2O.
Chrysolite: Forsterite (olivine) (Varietal name).
Chrysotile: Subgroup name for the sheet silicates of the serpentine group.
Cinnabar: HgS Class: Sulfide.
Citrine: Yellow variety of quartz (Varietal name).
Cleavelandite: Platy variety of albite (Varietal name).
Clinochlore: (Mg,Fe)5Al(Si3Al)O10(OH)8 (Chlorite) Class: Silicate, Subclass: Phyllosilicate. Type Locality: West Chester, Chester Co., Pennsylvania, USA.
Clinochrysotile: Mg3Si2O5(OH)4 (Kaolinite-serpentine) Class: Silicate. Type Locality: Reichenstein, Silesia, Poland.
Clinoclase: Cu3(AsO4)(OH)3 Class: Arsenate. Type Locality: Wheal Gorland, St. Day, Cornwall, England.
Clinohumite: (Mg,Fe)9(SiO4)4(F,OH)2 (Humite) Class: Silicate, Subclass: Nesosilicate. Type Locality: Monte Somma, Mt. Vesuvius, Napoli, Campania, Italy.
Clinoptilolite: (Na,K,Ca)6(Si,Al)36O27+20H2O (Zeolite) Class: Silicate.
Clinozoisite: Ca2Al3(SiO4)3(OH) (Epidote) Class: Silicate, Subclass: Sorosilicate.
Clintonite: Ca(Mg,Al)3(Al3Si)O10(OH)2 (Mica) Class: Silicate, Subclass: Phyllosilicate. Type Locality: Amity, New York, USA.
Coalingite: Mg10Fe2(CO3)(OH)24+2H2O. Type Locality: New Idria serpentine, Coalinga (near), Fresno Co., California, USA.
Cobaltite: CoAsS (Cobaltite) Class: Sulfide.
Coesite: SiO2. Type Locality: Canyon Diablo meteorite, Meteor Crater, Coconino Co., Arizona, USA.
Colemanite: Ca2B6O11+5H2O Class: Borate, Subclass: Hydrated Borate.
Colusite: Cu26V2(As,Sn,Sb)6S32 (Colusite) Class: Sulfide. Type Locality: Colusa claim, Butte, Silver Bow Co., Montana, USA.
Comancheite: Hg13(Cl,Br)8O9. Type Locality: Mariposa Mine, Terlingua Dist., Brewster Co., Texas, USA.
Conichalcite: CaCu(AsO4)(OH) (Adelite) Class: Arsenate, Subclass: Hydroxyl Arsenate. Type Locality: Hinojosa de Cordoba, Andalusia, Spain.
Connellite: Cu19Cl4(SO4)(OH)32+3H2O Class: Sulfate, Subclass: Hydrated Hydroxyl Sulfate. Type Locality: Wheal Providence [ ? Wheal Gorland, St. Day], Cornwall, England.
Cookeite: LiAl4(Si3Al)O10(OH)8 (Chlorite) Class: Silicate, Subclass: Phyllosilicate. Type Locality: Hebron, Maine, USA.
Copiapite: Fe5(SO4)6(OH)2+20H2O (Copiapite) Class: Sulfate. Type Locality: Copiapó, Atacama, Chile.
Copper: Cu Class: Native Element, Subclass: Metals.
Cordierite: Mg2Al4Si5O18 Class: Silicate, Subclass: Cyclosilicate. Type Locality: Bodenmais, Bayern (Bavaria), Germany.
Cornetite: Cu3(PO4)(OH)3 Class: Phosphate. Type Locality: L'Étoile du Congo mine, Lubumbashi (Elizabethville), Shaba, Zaïre.
Cornubite: Cu5(AsO4)2(OH)4 Class: Arsenate. Type Locality: Wheal Carpenter, Gwinear, Cornwall, England.
Cornwallite: Cu5(AsO4)2(OH)4+H2O Class: Arsenate. Type Locality: Wheal Gorland, St. Day, Cornwall, England.
Corundum: Al2O3 (Hematite) Class: Oxide. Type Locality: Bombay (near), India.
Covellite: CuS Class: Sulfide. Type Locality: Mt. Vesuvius, Napoli, Campania, Italy.
Cowlesite: CaAl2Si3O10+5-6H2O (Zeolite) Class: Silicate. Type Locality: Goble, Columbia Co., Oregon, USA.
Crandallite: CaAl3(PO4)2(OH)5+H2O (Crandallite) Class: Phosphate. Type Locality: Brooklyn Mine dump, Tintic Dist., Silver City (NW), Utah, USA.
Creaseyite: Cu2Pb2(Fe,Al)2Si5O17+6H2O. Type Locality: Mammoth mine, Tiger, Pinal Co., Arizona, USA.
Creedite: Ca3Al2(SO4)(F,OH)10+2H2O Class: Halide. Type Locality: Wagon Wheel Gap, Creede Quad., Mineral Co., Colorado, USA.
Cristobalite: SiO2 Class: Silicate, Subclass: Tektosilicate. Type Locality: Cerro San Cristóbal, Pachuca, Mexico.
Crocidolite: Fibrous variety of riebeckite (Varietal name).
Crocoite: PbCrO4 Class: Chromite. Type Locality: Berezov, Ekaterinburg (Sverdlovsk), Ural Mts., Russia, USSR.
Cryolite: Na3AlF6 Class: Halide, Subclass: Alumino-Fluoride. Type Locality: Ivigtut, Greenland (SW).
Cubanite: CuFe2S3 Class: Sulfide. Type Locality: Barracanao, Cuba.
Cumengeite: Pb21Cu20Cl42(OH)40 Class: Halide. Type Locality: Amelia mine, Boléo, Santa Rosalia (near), Baja California, Mexico.
Cummingtonite: (Mg,Fe)7Si8O22(OH)2 (Amphibole) Class: Silicate, Subclass: Inosilicate. Type Locality: Cummington, Hampshire Co., Massachusetts, USA.
Cuprite: Cu2O Class: Oxide.
Cuprosklodowskite: (H3O)2Cu(UO2)2(SiO4)2+2H2O Class: Silicate.
Curetonite: Ba4Al3Ti(PO4)4(O,OH)6 Class: Phosphate. Type Locality: Barite Mine, Golconda (near), Humboldt Co., Nevada, USA.
Cuspidine: Ca4Si2O7(F,OH)2 (Cuspidine) Class: Silicate. Type Locality: Monte Somma, Mt. Vesuvius, Napoli, Campania, Italy.
Custerite: Cuspidine (Varietal name).
Cyanite: Kyanite (Varietal name).
Cyanotrichite: Cu4Al2(SO4)(OH)12+2H2O Class: Sulfate.
Cyrtolite: Zircon (Varietal name).

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Dahllite: Carbonate hydroxylapatite (Varietal name).
Danalite: Fe4Be3(SiO4)3S. Type Locality: Rockport, Cape Ann, Essex Co., Massachusetts, USA.
Danburite: CaB2(SiO4)2 Class: Silicate, Subclass: Tektosilicate. Type Locality: Danbury, Fairfield Co., Connecticut, USA.
Datolite: CaBSiO4(OH) (Gadolinite) Class: Silicate. Type Locality: Arendal, Norway.
Davisonite: Crandallite (Varietal name).
Davyne: (Na,Ca,K)8Al6Si6O24(Cl,SO4,CO3)2-3 Class: Silicate. Type Locality: Monte Somma, Mt. Vesuvius, Napoli, Campania, Italy.
Dawsonite: NaAl(CO3)(OH)2 Class: Carbonate. Type Locality: Siena, Toscana, Italy and/or Trenton limestone, McGill University, Montreal, Québec, Canada.
Descloizite: PbZn(VO4)(OH) (Descloizite) Class: Vanadate, Subclass: Hydroxyl Vanadate. Type Locality: Sierra de Cordoba, Argentina.
Desmine: Stilbite (Varietal name).
Diaboleite: Pb2CuCl2(OH)4 Class: Halide. Type Locality: Higher Pitts mine, Priddy, Mendip Hills, Somerset, England.
Diamond: C Class: Native Element, Subclass: Non-Metals.
Diaspore: AlO(OH) (Diaspore) Class: Oxide. Type Locality: Mramorskoi, Kossoibrod (S), Ural Mts., Russia, Russia, USSR.
Dickinsonite: (K,Ba)(Na,Ca)5(Mn,Fe,Mg)14Al(PO4)12(OH,F)2 Class: Phosphate. Type Locality: Branchville, Fairfield Co., Connecticut, USA.
Dickite: Al2Si2O5(OH)4 (Kaolinite-serpentine) Class: Silicate. Type Locality: Amlwch, Anglesey, Wales.
Diopside: CaMgSi2O6 (Pyroxene) Class: Silicate, Subclass: Inosilicate.
Dioptase: CuSiO2(OH)2 Class: Silicate, Subclass: Cyclosilicate. Type Locality: Altyn-Tyube, Karaganda (E), Kirghizia, USSR.
Disthene: Kyanite (Varietal name).
Djurleite: Cu31S16 Class: Sulfide. Type Locality: Barranca de Cobre, Chihuahua, Mexico.
Dolomite: CaMg(CO3)2 (Dolomite) Class: Carbonate. Type Locality: Tyrol, Italy.
Domeykite: Cu3As Class: Arsenide. Type Locality: Algodones mines, Coquimbo (Calabozo), Chile.
Donathite: Discredited (a mixture of two spinels) (Varietal name).
Dravite: NaMg3Al6(BO3)3Si6O18(OH)4 (Tourmaline) Class: Silicate, Subclass: Cyclosilicate. Type Locality: Unterdrauburg, Drave, Kärnten (Carinthia), Austria.
Dufrenite: Fe5(PO4)3(OH)5+H2O Class: Phosphate. Type Locality: Hirschberg, Gera, Germany.
Duftite: PbCu(AsO4)(OH) (Adelite) Class: Arsenate, Subclass: Hydroxyl Arsenate. Type Locality: Tsumeb, Namibia.
Dumontite: Pb2[(UO2)3O2(PO4)2]+5H2O Class: Phosphate. Type Locality: Kasolo (Shinkolobwe), Shaba, Zaïre.
Dumortierite: Al7(BO3)(SiO4)3O3 Class: Silicate. Type Locality: Beaunan, Chaponost, Lyons (near), France.
Dundasite: PbAl2(CO3)2(OH)4+H2O Class: Carbonate. Type Locality: Adelaide Prop. mine, Dundas, Tasmania, Australia.
Dyscrasite: Ag3Sb Class: Sulfide. Type Locality: Andreasberg, Harz, Germany.

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Ecdemite: Pb6As2O7Cl4. Type Locality: Långban mine, Filipstad (near), Värmland, Sweden.
Edenite: NaCa2(Mg,Fe)5(Si7Al)O22(OH)2 (Amphibole) Class: Silicate, Subclass: Inosilicate. Type Locality: Edenville, New York, USA.
Edingtonite: BaAl2Si3O10+4H2O (Zeolite) Class: Silicate. Type Locality: Böhlet mine, Västergötland, Sweden.
Elbaite: Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 (Tourmaline) Class: Silicate, Subclass: Cyclosilicate. Type Locality: Elba, Toscana, Italy.
Emerald: Green beryl (containing Cr or V) (Varietal name).
Emmonsite: Fe2Te3O9+2H2O Class: Tellurite. Type Locality: Tombstone, Cochise Co., Arizona, USA.
Enargite: Cu3AsS4 Class: Sulfosalt. Type Locality: S. Francisco vein, Morococha, Jauli, Peru.
Endlichite: Vanadinite containing As (Varietal name).
Englishite: Na2K3Ca10Al15(PO4)21(OH)7+26H2O Class: Phosphate. Type Locality: Clay Canyon, Fairfield (near), Utah Co., Utah, USA.
Enstatite: Mg2Si2O6 (Pyroxene) Class: Silicate, Subclass: Inosilicate. Type Locality: Berge Zdjar, Moravia, Czech Republic.
Eosphorite: (Mn,Fe)Al(PO4)(OH)2+H2O Class: Phosphate. Type Locality: Branchville, Fairfield Co., Connecticut, USA.
Epidesmine: Stilbite (Varietal name).
Epididymite: NaBeSi3O7(OH) Class: Silicate. Type Locality: Narsarsuk, Greenland (S).
Epidote: Ca2(Al,Fe)3(SiO4)3(OH) (Epidote) Class: Silicate, Subclass: Sorosilicate. Type Locality: Bourg d'Oisans, Dauphiné, France.
Epistilbite: CaAl2Si6O16+5H2O (Zeolite) Class: Silicate. Type Locality: Teigarhorn, Berufjord, Iceland.
Epsomite: MgSO4+7H2O Class: Sulfate. Type Locality: Epsom, Surrey, England.
Erinite: Cornwallite (Varietal name).
Erionite: (K2,Ca,Na2)2Al4Si14O36+15H2O (Zeolite) Class: Silicate. Type Locality: Durkee, Baker Co., Oregon, USA.
Ernstite: (Mn1-x,Fex)Al(PO4)(OH,O)2 Class: Phosphate. Type Locality: Davib-East farm, Karibib (near), Namibia.
Erythrite: Co3(AsO4)2+8H2O (Vivianite) Class: Arsenate, Subclass: Hydrated Arsenate. Type Locality: Allemont, Isère, France.
Esperite: PbCa3Zn4(SiO4)4 Class: Silicate. Type Locality: Franklin, Sussex Co., New Jersey, USA.
Euclase: BeAlSiO4(OH) Class: Silicate.
Eucryptite: LiAlSiO4 Class: Silicate. Type Locality: Branchville, Fairfield Co., Connecticut, USA.
Eudialyte: Na4(Ca,Ce)2(Fe,Mn,Y)ZrSi8O22(OH,Cl)2 Class: Silicate. Type Locality: Kangerdluarsuk, Ilímaussaq intrusive, Greenland (S).
Eudidymite: NaBeSi3O7(OH) Class: Silicate. Type Locality: Larvik, Vestfold, Norway.
Eulite: Hypersthene (Varietal name).

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Fairfieldite: Ca2(Mn,Fe)(PO4)2+2H2O (Fairfieldite) Class: Phosphate. Type Locality: Branchville, Fairfield Co., Connecticut, USA.
Fassaite: Ferrian aluminian diopside or augite (Varietal name).
Fayalite: Fe2SiO4 (Olivine) Class: Silicate, Subclass: Nesosilicate. Type Locality: Fayal, Azores, Atlantic Ocean.
Feldspar: Group name.
Ferberite: FeWO4 (Wolframite Series) Class: Tungstate. Type Locality: Sierra Almagrera, Spain (S).
Ferrierite: (Na,K)2MgAl3Si15O36(OH)+9H2O (Zeolite) Class: Silicate.
Ferro-axinite: Ca2FeAl2BSi4O15(OH) (Axinite) Class: Silicate, Subclass: Cyclosilicate.
Ferrocolumbite: FeNb2O6 Class: Oxide. Type Locality: Greens Well, Wodgina, Western Australia, Australia.
Ferrotantalite: FeTa2O6 Class: Oxide.
Ferrowodginite: FeSnTa2O8 (Wodginite) Class: Oxide. Type Locality: Sukula (near), Tamella-Somera pegmatite province, Finland (SW).
Fersmanite: (Ca,Na)4(Ti,Nb)2Si2O11(F,OH)2. Type Locality: Khibina massif, Kola Peninsula, Russia, USSR.
Fersmite: (Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6. Type Locality: Vishnevye Mts., Ural Mts., Russia, USSR.
Fibrolite: Sillimanite (Varietal name).
Fluoborite: Mg3(BO3)(F,OH)3 Class: Borate.
Fluorapatite: Ca5(PO4)3F (Apatite) Class: Phosphate, Subclass: Anhydrous Phosphate.
Fluorapophyllite: KCa4Si8O20(F,OH)+8H2O Class: Silicate, Subclass: Phyllosilicate.
Fluorite: CaF2 Class: Halide.
Fluororichterite: Na2Ca(Mg,Fe)5[Si8O22](F,OH)2 (Amphibole) Class: Silicate, Subclass: Inosilicate. Type Locality: Ilmenogorsk-Vishnevogorsk alkaline complex, Miass (near, Chelyabinsk.
Foggite: CaAl(PO4)(OH)2+H2O Class: Phosphate. Type Locality: Palermo #1 Mine, North Groton, Grafton Co., New Hampshire, USA.
Foitite: [][Fe2(Al,Fe)]Al6Si6O18(BO3)(OH) (Tourmaline) Class: Silicate, Subclass: Cyclosilicate. Type Locality: Exact Locality Unknown, California (S), USA.
Fornacite: (Pb,Cu)3[(Cr,As)O4]2(OH) Class: Chomate. Type Locality: Renéville, Djoué, Zaïre.
Forsterite: Mg2SiO4 (Olivine) Class: Silicate, Subclass: Nesosilicate. Type Locality: Monte Somma, Mt. Vesuvius, Napoli, Campania, Italy.
Foshagite: Ca4Si3O9(OH)2. Type Locality: Crestmore, Riverside Co., California, USA.
Foucherite: Delvauxite (Varietal name).
Francolite: Carbonate-fluorapatite (Varietal name).
Franklinfurnaceite: Ca2(Fe,Al)Mn4Zn2Si2O10(OH)8. Type Locality: Franklin, Sussex Co., New Jersey, USA.
Franklinite: (Zn,Mn,Fe)(Fe,Mn)2O4 (Spinel) Class: Oxide. Type Locality: Franklin, Sussex Co., New Jersey, USA.
Fresnoite: Ba2TiSi2O8. Type Locality: Big Creek -- Rush Creek area, Fresno Co., California, USA.
Friedelite: Mn8Si6O15(OH,Cl)10 Class: Silicate. Type Locality: Adervielle mine, Louron valley, Hautes Pyrénées, France.
Frondelite: MnFe4(PO4)3(OH)5 Class: Phosphate. Type Locality: Sapucaia Pegmatite, Conselheiro Pena, Galileia, Minas Gerais, Brazil.
Fuchsite: Muscovite with up to 4.8% Cr2O3 (Varietal name).

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Gadolinite-(Ce): (Ce,La,Nd,Y)2FeBe2Si2O10 (Gadolinite) Class: Silicate. Type Locality: Skien, Oslo (near), Norway.
Gadolinite-(Y): Y2FeBe2Si2O10 (Gadolinite) Class: Silicate. Type Locality: Ytterby feldspar quarry, Resarö island, Stockholm (near), Sweden.
Gahnite: ZnAl2O4 (Spinel) Class: Oxide. Type Locality: Falun, Sweden.
Galena: PbS Class: Sulfide.
Garnet: Group name.
Garnierite: Hydrous nickel silicates (Varietal name).
Gasparite-(Ce): (Ce,La,Nd)AsO4 (Monazite) Class: Arsenate. Type Locality: Mt. Pizzo Cervandone (Cherbadung), Piemonte, Italy.
Gaspéite: (Ni,Mg,Fe)CO3 (Calcite) Class: Carbonate. Type Locality: Lemieux Township, Gaspé Peninsula, Gaspé-ouest Co., Québec, Canada.
Genthelvite: Zn4Be3(SiO4)3S. Type Locality: Cheyenne Canyon (W), El Paso Co., Colorado, USA.
Genthite: Garnierite (Varietal name).
Gerstmannite: (Mg,Mn)2ZnSiO4(OH)2. Type Locality: Sterling Hill Mine, Ogdensburg, Sussex Co., New Jersey, USA.
Getchellite: AsSbS3. Type Locality: Getchell Mine, South Pit Extension, Humboldt Co., Nevada, USA.
Gibbsite: Al(OH)3 Class: Oxide, Subclass: Hydroxide. Type Locality: Richmond, Berkshire Co., Massachusetts, USA.
Gismondine: Ca2Al4Si4O16+9H2O (Zeolite) Class: Silicate. Type Locality: Capo di Bove, Roma, Italy.
Glauberite: Na2Ca(SO4)2 Class: Sulfate, Subclass: Anhydrous Sulfate. Type Locality: Villarubia, Ocana (near), Toledo, Spain.
Glauconite: (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2 (Mica) Class: Silicate, Subclass: Phyllosilicate.
Glaucophane: Na2(Mg,Fe)3Al2Si8O22(OH)2 (Amphibole) Class: Silicate, Subclass: Inosilicate. Type Locality: Syra island, Kikládhes (Cyclades Islands), Greece.
Gmelinite: (Na2,Ca)Al2Si4O12+6H2O (Zeolite) Class: Silicate, Subclass: Tektosilicate. Type Locality: Little Deer Park, Co. Antrim, Northern Ireland.
Goethite: FeO(OH) (Diaspore) Class: Oxide. Type Locality: Hollerter Zug, Kirchen, Rheinland, Germany.
Gold: Au Class: Native Element, Subclass: Metals.
Goosecreekite: CaAl2Si6O16+5H2O (Zeolite) Class: Silicate. Type Locality: Luck Goose Creek Quarry, Loudoun Co., Virginia, USA.
Goshenite: Colorless vairety of beryl (Varietal name).
Goudeyite: (Al,Y)Cu6(AsO4)3(OH)6+3H2O (Mixite) Class: Arsenate. Type Locality: Majuba Hill Mine, Pershing Co., Nevada, USA.
Goyazite: SrAl3(PO4)2(OH)5+H2O (Crandallite) Class: Phosphate. Type Locality: Serra de Congonhas, Diamantina, Minas Gerais, Brazil.
Graftonite: (Fe,Mn,Ca)3(PO4)2 Class: Phosphate. Type Locality: Grafton (near), Melvin Mt., New Hampshire, USA.
Grandreefite: Pb2(SO4)F2 Class: Sulfate. Type Locality: Grand Reef Mine, Laurel Canyon, Graham Co., Arizona, USA.
Graphite: C Class: Native Element, Subclass: Non-Metals.
Gratonite: Pb9As4S15 Class: Sulfosalt. Type Locality: Excelsior mine, Cerro de Pasco, Pasco dept., Peru.
Greenockite: CdS Class: Sulfide. Type Locality: Bishopton, Renfrewshire, Scotland.
Grossular: Ca3Al2(SiO4)3 (Garnet) Class: Silicate, Subclass: Nesosilicate. Type Locality: Siberia, Russia, USSR.
Grossularite: Grossular (Varietal name).
Groutite: MnO(OH) (Diaspore) Class: Oxide. Type Locality: Mahnomen mine, Cuyuna Range, Crow Wing Co., Minnesota, USA.
Grünerite: (Fe,Mg)7Si8O22(OH)2 (Amphibole) Class: Silicate, Subclass: Inosilicate. Type Locality: Collobrières, Var, France.
Gypsum: CaSO4+2H2O Class: Sulfate, Subclass: Hydrated Sulfate.
Gyrolite: Na(Ca,Mg,Fe)16(Si,Al)24O60(OH)8+15H2O. Type Locality: Storr, Portree, Skye, Scotland.

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Halite: NaCl Class: Halide.
Halloysite: Al2Si2O5(OH)4 (Kaolinite-serpentine) Class: Silicate.
Halotrichite: FeAl2(SO4)4+22H2O (Halotrichite) Class: Sulfate.
Hambergite: Be2BO3(OH) Class: Borate. Type Locality: Helgeraen, Langesundfjord, Telemark, Norway.
Hancockite: (Pb,Ca,Sr)2(Al,Fe)3(SiO4)3(OH) (Epidote) Class: Silicate, Subclass: Sorosilicate. Type Locality: Franklin Furnace, Sussex Co., New Jersey, USA.
Hanksite: KNa22(SO4)9(CO3)2Cl Class: Sulfate, Subclass: Compound Sulfate. Type Locality: Searles Lake, San Bernardino Co., California, USA.
Hardystonite: Ca2ZnSi2O7 (Melilite) Class: Silicate. Type Locality: North Hill Mine, Franklin, Sussex Co., New Jersey, USA.
Harmotome: (Ba,K)1-2(Si,Al)8O16+6H2O (Zeolite) Class: Silicate, Subclass: Tektosilicate. Type Locality: Andreasberg, Harz, Germany.
Hauckite: Fe3(Mg,Mn)24Zn18(SO4)4(CO3)2(OH)81. Type Locality: Sterling Hill Mine, Ogdensburg, Sussex Co., New Jersey, USA.
Hausmannite: Mn3O4 Class: Oxide. Type Locality: Ilfeld, Harz, Germany and/or Raddusa, Sicilia (Sicily), Italy.
Hauyne, haüyne, haueyne: (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2 (Sodalite) Class: Silicate. Type Locality: Monte Somma, Mt. Vesuvius, Napoli, Campania, Italy.
Hawthorneite: Ba[Ti3Cr4Fe4Mg]O19 (Magnetoplumbite) Class: Oxide. Type Locality: Bulfontein, Kimberley, South Africa.
Hedenbergite: CaFeSi2O6 (Pyroxene) Class: Silicate, Subclass: Inosilicate. Type Locality: Mormors mine, Tunaberg, Sweden.
Heliodor: Yellow-golden yellow variety of beryl (Varietal name).
Helvite: Mn4Be3(SiO4)3S Class: Silicate. Type Locality: Schwarzenberg, Sachsen (Saxony), Germany.
Hematite: Fe2O3 (Hematite) Class: Oxide.
Hemimorphite: Zn4Si2O7(OH)2+H2O Class: Silicate, Subclass: Sorosilicate. Type Locality: Rezbanya, Hungary.
Hendersonite: Ca2V9O24+8H2O. Type Locality: JJ Mine, Paradox Valley, Montrose Co., Colorado, USA and Unspecified locality, New Mexico, USA.
Hendricksite: K(Zn,Mg,Mn)3Si3AlO10(OH)2 (Mica) Class: Silicate, Subclass: Phyllosilicate. Type Locality: Franklin, Sussex Co., New Jersey, USA.
Herderite: CaBe(PO4)(F,OH) Class: Phosphate, Subclass: Fluorine-Hydroxyl Phosphate. Type Locality: Ehrenfriedersdorf, Sachsen (Saxony), Germany.
Hessite: Ag2Te Class: Telluride. Type Locality: Sacarîmb (Nagyág), Muntii Metaliferi, Judetul Hunedoara, Romania.
Hessonite: Brownish red to orangish red variety of grossular, contains Fe.
Heterosite: (Fe,Mn)PO4 Class: Phosphate, Subclass: Anhydrous Phosphate. Type Locality: Limoges (near), Haute-Vienne, France.
Heulandite: (Na,Ca)2-3Al3(Al,Si)2Si13O36+12H2O (Zeolite) Class: Silicate, Subclass: Tektosilicate.
Hewettite: CaV6O16+9H2O Class: Vanadium Oxysalt. Type Locality: Minasragra, Junín, Peru.
Hexagonite: Tremolite (Varietal name).
Heyite: Pb5Fe2(VO4)2O4. Type Locality: Betty Jo Claim, Ely (near), White Pine Co., Nevada, USA.
Hibschite: Hydrogrossular (Varietal name).
Hiddenite: Emerald-green variety of spodumene, contains Cr (Varietal name).
Hodgkinsonite: MnZn2SiO4(OH)2. Type Locality: Franklin, Sussex Co., New Jersey, USA.
Hollandite: BaMn8O16 (Cryptomelane) Class: Oxide. Type Locality: Kajlidongri, Jhabua State, India (central).
Hornblende: Subgroup in the amphibole group.
Hornesite, hörnesite, hoernesite: Mg3(AsO4)2+8H2O (Vivianite) Class: Arsenate, Subclass: Hydrated Arsenate. Type Locality: Oravita (Oravicza), Banat, Romania.
Hortonolite: Magnesian, manganoan Fayalite (Varietal name).
Howieite: Na(Fe,Mn)10(Fe,Al)2Si12O31(OH)13. Type Locality: Laytonville Quarry, Laytonville (S), Mendocino Co., California, USA.
Howlite: Ca2SiB5O9(OH)5 Class: Borate, Subclass: Hydrated Borate. Type Locality: Brookville, Windsor (near), Hants Co., Nova Scotia, Canada.
Hubnerite, hübnerite, huebnerite: MnWO4 (Wolframite Series) Class: Tungstate. Type Locality: Erie and Enterprize veins, Ellsworth, Mammoth dist., Nevada, USA.
Humite: (Mg,Fe)7(SiO4)3(F,OH)2 (Humite) Class: Silicate, Subclass: Nesosilicate. Type Locality: Monte Somma, Mt. Vesuvius, Napoli, Campania, Italy.
Huréaulite: Mn5(PO4)2[PO3(OH)]2+4H2O Class: Phosphate. Type Locality: Huréaux quarry, St. Sylvestre, Haute-Vienne, France.
Hurlbutite: CaBe2(PO4)2 Class: Phosphate. Type Locality: Smith mine, Newport, New Hampshire, USA.
Hyacinth: Zircon (Varietal name).
Hyalite: Colorless variety of opal (Varietal name).
Hyalophane: (K,Ba)Al(Si,Al)3O8 (Feldspar) Class: Silicate, Subclass: Tektosilicate.
Hydrocerussite: Pb3(CO3)2(OH)2 Class: Carbonate. Type Locality: Långban mine, Filipstad (near), Värmland, Sweden.
Hydromagnesite: Mg5(CO3)4(OH)2+4H2O Class: Carbonate. Type Locality: Hoboken, Hudson Co., New Jersey, USA.
Hydroxyapophyllite: KCa4Si8O20(OH,F)+8H2O Class: Silicate, Subclass: Phyllosilicate. Type Locality: Ore Knob Mine, Jefferson, Ashe Co., North Carolina, USA.
Hydroxylapatite: Ca5(PO4)3(OH) (Apatite) Class: Phosphate, Subclass: Hydroxyl Phosphate.
Hydroxylherderite: CaBe(PO4)(OH) Class: Phosphate.
Hydrozincite: Zn5(CO3)2(OH)6 Class: Carbonate. Type Locality: Bleiberg, Carinthia, Austria.
Hypersthene: Enstatite-ferrosilite series (Varietal name).

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Idocrase: Vesuvianite (Varietal name).
Ilmenite: FeTiO3 (Ilmenite) Class: Oxide. Type Locality: Ilmen Mts., Miass, Ural Mts., Russia, USSR.
Ilmenorutile: (Ti,Nb,Fe)O26 Class: Oxide.
Ilvaite: CaFe3Si2O7(O,OH) Class: Silicate, Subclass: Sorosilicate. Type Locality: Rio la Marina and Capo Calamita, Elba, Toscana, Italy.
Inderite: MgB3O3(OH)5+5H2O Class: Borate, Subclass: Hydrated Borate.
Indicolite: Blue variety of elbaite (Varietal name).
Indium: In Class: Native Element. Type Locality: Unspecified locality, Zabaikal'ye (E) (Transbaikal), Russia, USSR.
Inesite: Ca2Mn7Si10O28(OH)2+5H2O Class: Silicate. Type Locality: Nanzenbach, Dillenburg (near), Germany.
Inyoite: Ca2B6O6(OH)10+8H2O. Type Locality: Mt. Blanco Deposit, Furnace Creek, Death Valley, Inyo Co., California, USA.
Iolite: Cordierite (Varietal name).
Iridium: Ir Class: Native Element, Subclass: Metals.
Iron: Fe Class: Native Element, Subclass: Metals.
Ishikawaite: (U,Fe,Y,Ca)(Nb,Ta)O4 Class: Oxide. Type Locality: Ishikawa district, Iwaki, Fukushima Pref., Japan.
Isostannite: Kesterite (Varietal name).

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Jade: Gem varieties of jadeite or nephrite (Varietal name).
Jadeite: NaAlSi2O6 (Pyroxene) Class: Silicate, Subclass: Inosilicate.
Jahnsite-(CaMnFe): CaMnFe2Fe2(PO4)4(OH)2+8H2O (Whiteite) Class: Phosphate. Type Locality: Tip Top Pegmatite, Custer, Custer Co., South Dakota, USA, and(?) Fletcher and Palermo mines, New Hampshire, USA.
Jahnsite-(CaMnMg): CaMn(Mg,Fe)2Fe2(PO4)4(OH)2+8H2O (Whiteite) Class: Phosphate. Type Locality: Tip Top Pegmatite, Custer, Custer Co., South Dakota, USA.
Jahnsite-(CaMnMn): CaMnMn2Fe2(PO4)4(OH)2+8H2O (Whiteite) Class: Phosphate. Type Locality: Mangualde, Beira, Portugal.
Jamesonite: Pb4FeSb6S14 Class: Sulfosalt. Type Locality: Cornwall, England.
Jarosite: KFe3(SO4)2(OH)6 (Alunite) Class: Sulfate. Type Locality: Jaroso ravine, Sierra Almagro, Ciudad Real dist., Spain.
Jasper: Colored, translucent to opaque cryptocrytalline variety of quartz (Varietal name).
Jeremejevite: Al6B5O15(F,OH)3.
Joaquinite-(Ce): Ba2NaCe2Fe(Ti,Nb)2Si8O26(OH,F)+H2O (Joaquinite) Class: Silicate, Subclass: Titanosilicate. Type Locality: Benito Gem mine, Diablo range, San Benito Co., California, USA.
Johnbaumite: Ca5(AsO4)3(OH) (Apatite) Class: Arsenate, Subclass: Hydroxyl Arsenate. Type Locality: Palmer Shaft (S), Franklin, Sussex Co., New Jersey, USA.

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Kainite: MgSO4+KCl+3H2O. Type Locality: Stassfurt deposit, Sachsen (Saxony), Germany.
Kainosite-(Y): Ca2(Y,Ce)2Si4O12(CO3)+H2O. Type Locality: Igeltjern, Hitterö, Norway.
Kamarezite: Brochantite (Varietal name).
Kaolinite: Al2Si2O5(OH)4 (Kaolinite-serpentine) Class: Silicate.
Katoite: Ca3Al2[(SiO4),(OH)4]3 (Garnet) Class: Silicate, Subclass: Nesosilicate. Type Locality: Cava Campomorto, Montalto di Castro, Viterbo, Lazio, Italy.
Kegelite: Pb12(Zn,Fe)2Al4(SO4)Si11O38. Type Locality: Tsumeb, Namibia.
Kermesite: Sb2S2O Class: Sulfide.
Kernite: Na2B4O6(OH)2+3H2O Class: Borate, Subclass: Hydrated Borate.
Keyite: (Cu,Zn,Cd)3(AsO4)2 Class: Arsenate. Type Locality: Tsumeb, Namibia.
Kidwellite: NaF9(PO4)6(OH)10+5H2O Class: Phosphate. Type Locality: Fodderstack Mt., Montgomery Co., Arkansas, USA.
Kimzeyite: Ca3(Zr,Ti)2(Si,Al,Fe)3O12 (Garnet) Class: Silicate, Subclass: Nesosilicate.
Kinoite: Ca2Cu2Si3O8(OH)4 Class: Silicate. Type Locality: Santa Rita Mts., Pima Co., Arizona, USA.
Kintoreite: PbFe3(PO4)2(OH,H2O)6 (Alunite) Class: Sulfate. Type Locality: Kintore Open Cut, Broken Hill, New South Wales, Australia.
Kleberite: Pseudorutile (Varietal name).
Kolicite: Mn7Zn4(AsO4)(SiO4)2(OH)8. Type Locality: Sterling Hill Mine, Ogdensburg, Sussex Co., New Jersey, USA.
Kolwezite: (Cu,Co)2(CO3)(OH)2 (Rosasite) Class: Carbonate. Type Locality: Kolwezi, Shaba (S), Zaïre.
Kornerupine: Mg3Al6(Si,Al,B)5O21(OH). Type Locality: Fiskenäs, Nuuk area, Greenland (SW).
Kraisslite: (Mn,Mg)24Zn3Fe(AsO3)2(AsO4)3(SiO4)6(OH)18. Type Locality: Sterling Hill Mine, Ogdensburg, Sussex Co., New Jersey, USA.
Kunzite: Lilac to pink variety of spodumene (Varietal name).
Kutnohorite: Ca(Mn,Mg,Fe)(CO3)2 (Dolomite) Class: Carbonate.
Kyanite: Al2SiO5 Class: Silicate, Subclass: Nesosilicate. Type Locality: Greiner, Zillerthal, Austria.

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Labradorite: (Na,Ca)(Al,Si)4O8 (Feldspar) Class: Silicate, Subclass: Tektosilicate. Type Locality: Paul Island, Labrador (coast), Newfoundland, Canada.
Lacroixite: NaAl(PO4)F Class: Phosphate. Type Locality: Greifenstein, Ehrenfriedersdorf, Sachsen, Germany.
Laffittite: AgHgAsS3. Type Locality: Jas Roux, Hautes-Alpes, France.
Lamprophyllite: Na2(Sr,Ba)2Ti3(SiO4)4(OH,F)2. Type Locality: Lujavor-Urt, Khibina tundra, Kola Peninsula, Russia, USSR.
Langbanite, långbanite: (Mn,Ca)4(Mn,Fe)9SbSi2O24. Type Locality: Långban mine, Filipstad (near), Värmland, Sweden.
Langite: Cu4(SO4)(OH)6+2H2O Class: Sulfate. Type Locality: Fowey Consols mine, Tywardreath (St. Blazey), Cornwall, England.
Lanthanite-(Ce): (Ce,La,Nd)2(CO3)3+8H2O Class: Carbonate. Type Locality: Britannia mine, Snowdon, Caernarvonshire (Gwynedd), Wales.
Lanthanite-(La): (La,Ce)2(CO3)3+8H2O Class: Carbonate. Type Locality: Bastnäs, Riddarhyttan, Västmanland, Sweden.
Lanthanite-(Nd): (Nd,La)2(CO3)3+8H2O Class: Carbonate. Type Locality: Curitiba, Paraná, Brazil.
Laphamite: As2(Se,S)3. Type Locality: Burnside, Northumberland Co., Pennsylvania, USA.
Lapis lazuli: Gem variety of lazurite (Varietal name).
Laueite: MnFe2(PO4)2(OH)2+8H2O (Paravauxite) Class: Phosphate.
Laumontite: CaAl2Si4O12+4H2O (Zeolite) Class: Silicate, Subclass: Tektosilicate. Type Locality: Huelgoat mine, Brittany, France.
Laurionite: PbCl(OH) Class: Halide. Type Locality: Lávrion (Laurium), Attikí, Greece.
Lawsonite: CaAl2Si2O7(OH)2+H2O Class: Silicate. Type Locality: Tiburon Peninsula, Marin Co., California, USA.
Lazulite: MgAl2(PO4)2(OH)2 (Lazulite) Class: Anhydrous Phosphate, Subclass: Hydroxyl Phosphate.
Lazurite: (Na,Ca)7-8(Al,Si)12(O,S)24[(SO4),Cl2(OH)2] (Sodalite) Class: Silicate, Subclass: Tektosilicate. Type Locality: Badakhstan, Afghanistan (NE) (?).
Lead: Pb Class: Native Element, Subclass: Metals.
Leadhillite: Pb4(SO4)(CO3)2(OH)2 Class: Sulfate. Type Locality: Leadhills, Lanarkshire, Scotland.
Legrandite: Zn2(AsO4)(OH)+H2O Class: Arsenate. Type Locality: Flor de Pena Mine, Lampazos, Nueva Leon, Mexico.
Lehiite: Mixture of crandallite and apatite (Varietal name).
Leiteite: ZnAs2O4. Type Locality: Tsumeb, Namibia.
Leonhardtite: NiTe2 (Melonite) Class: Telluride. Type Locality: Stanislaus Mine, Carson Hill, Calaveras Co., California, USA.
Leonhardtite: Partially dehydrated laumontite (Varietal name).
Leonhardtite: Starkeyite (Varietal name).
Lepidocrocite: FeO(OH) Class: Oxide. Type Locality: Eisenzeche, Eiserfeld, Siegen, Rheinland-Westfalen, Germany.
Lepidolite-2M1: K(Li,Al)3(Si,Al)4O10(F,OH)2 (Mica) Class: Silicate, Subclass: Phyllosilicate. Type Locality: Biskupi\v ce (near), Czech Republic.
Lepidolite-2M2: K(Li,Al)3(Si,Al)4O10(F,OH)2 (Mica) Class: Silicate, Subclass: Phyllosilicate. Type Locality: South Portland, Cumberland Co., Maine, USA.
Lepidomelane: Ferrian biotite (Varietal name).
Leucite: KAlSi2O6 (Zeolite) Class: Silicate, Subclass: Tektosilicate. Type Locality: Mt. Vesuvius, Napoli, Campania, Italy.
Leucophanite: (Na,Ca)2BeSi2(O,OH,F)7 Class: Silicate.
Leucoxene: Alteration products of ilmenite or pseudorutile (Varietal name).
Levyne: (Ca,Na2,K2)Al2Si4O12+6H2O (Zeolite) Class: Silicate. Type Locality: Dalsnipa, Sandoy, Faröe Islands.
Libethenite: Cu2(PO4)(OH) Class: Phosphate, Subclass: Hydroxyl Phosphate. Type Locality: Lubietová (Libethen), Banská Bystrica (Neusohl), Stredoslovensky kraj, Slovensko (Slovakia), Czechoslovakia.
Liddicoatite: Ca(Li,Al)3Al6(BO3)3Si6O18(O,OH,F)4 (Tourmaline) Class: Silicate, Subclass: Cyclosilicate. Type Locality: Antsirabe, Madagascar.
Limonite: General term for hydrous iron oxides (Varietal name).
Linarite: PbCu(SO4)(OH)2 Class: Sulfate, Subclass: Hydrated Sulfate. Type Locality: Linares, Jaén, Spain.
Linnaeite: Co3S4 (Linnaeite) Class: Sulfide. Type Locality: Bastnäs, Riddarhyttan, Västmanland, Sweden.
Lithionite: Lepidolite (Varietal name).
Lithiophilite: LiMnPO4 Class: Phosphate, Subclass: Anhydrous Phosphate. Type Locality: Branchville, Fairfield Co., Connecticut, USA.
Lollingite, löllingite, loellingite: FeAs2 (Lollingite) Class: Arsenide. Type Locality: Wolfbaur mine, Lölling, Hüttenberg, Kärnten (Carinthia), Austria.
Lombaardite: Allanite (Varietal name).
Lonsdaleite: C Class: Native Element, Subclass: Non-Metals. Type Locality: Canyon Diablo meteorite, Meteor Crater, Coconino Co., Arizona, USA.
Loparite-(Ce): (Ce,Na,Ca)2(Ti,Nb)2O6 (Perovskite) Class: Oxide. Type Locality: Khibina tundra, Kola peninsula, Russia, USSR.
Loudounite: NaCa5Zr4Si16O40(OH)11+8H2O. Type Locality: Goose Creek Quarry, Loudoun Co., Virginia, USA.
Lucinite: Variscite (Varietal name).
Ludlamite: (Fe,Mg,Mn)3(PO4)2+4H2O Class: Phosphate, Subclass: Hydrous Phosphate. Type Locality: Wheal Jane, Truro, Cornwall, England.
Ludlockite: (Fe,Pb)As2O6. Type Locality: Tsumeb, Namibia.
Ludwigite: Mg2FeBO5 (Ludwigite) Class: Borate. Type Locality: Ocna de Fier (Vaskö or Moravica), Banat, Romania.
Lusungite: Goyazite (Varietal name).
Luzonite: Cu3AsS4 (Stannite) Class: Sulfide. Type Locality: Mancayan, Lepanto district, Luzon island, Philippines.

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Macedonite: PbTiO3 Class: Oxide. Type Locality: Crni Kamen, Prilep (near), Macedonia (Makedonija), Yugoslavia.
Magnesio-axinite: Ca2MgAl2BSi4O15(OH) (Axinite) Class: Silicate, Subclass: Cyclosilicate.
Magnesioferrite: MgFe2O4 (Spinel) Class: Oxide. Type Locality: Mt. Vesuvius, Napoli, Campania, Italy.
Magnesite: MgCO3 (Calcite) Class: Carbonate. Type Locality: Magnesia, Thessalia, Greece and/or Baldissero Canavese, Piemonte, Italy.
Magnetite: Fe3O4 (Spinel) Class: Oxide. Type Locality: Magnesia, Thessalia, Greece.
Magnocolumbite: (Mg,Fe,Mn)(Nb,Ta)2O6 Class: Oxide. Type Locality: Kugi-Lyal, Pamir (SW), Russia, USSR.
Malachite: Cu2(CO3)(OH)2 Class: Carbonate.
Malayaite: CaSnSiO5.
Manganaxinite: Ca2MnAl2BSi4O15(OH) (Axinite) Class: Silicate, Subclass: Cyclosilicate.
Manganite: MnO(OH) Class: Oxide, Subclass: Hydroxide. Type Locality: Ilfeld, Harz, Germany.
Manganocalcite: Calcite containing Mn (Varietal name).
Manganochromite: (Mn,Fe)(Cr,V)2O4 (Spinel) Class: Oxide.
Manganocolumbite: (Mn,Fe)(Nb,Ta)2O6 Class: Oxide. Type Locality: New London, New London Co., Connecticut, USA.
Manganophyllite: Biotite containing up to 18% MnO (Varietal name).
Manganotantalite: MnTa2O6 Class: Oxide.
Mapimite: Zn2Fe3(AsO4)3(OH)4+10H2O Class: Arsenate. Type Locality: Ojuela mine, Mapimi, Durango, Mexico.
Marcasite: FeS2 (Melanterite) Class: Sulfide.
Margarite: CaAl2(Al2Si2)O10(OH)2 (Mica) Class: Silicate, Subclass: Phyllosilicate. Type Locality: Mt. Greiner, Sterzing, Tyrol, Austria.
Margarosanite: Pb(Ca,Mn)2Si3O9. Type Locality: Franklin, Sussex Co., New Jersey, USA.
Maricopaite: Pb7Ca2Al12Si36(O,OH)100+nH2O (Zeolite) Class: Silicate.
Mariposite: hengite containing Cr (Varietal name).
Marmatite: Sphalerite containing Fe and having black color (Varietal name).
Martite: Hematite pseudomorph of magnetite (Varietal name).
Massicot: PbO Class: Oxide. Type Locality: Mexico.
Matlockite: PbFCl Class: Chloride, Subclass: Oxychloride. Type Locality: Cromford, Matlock (near), Derbyshire, England.
Mcgovernite: Mg4Mn9Zn2As2Si2O17(OH)14. Type Locality: Stirling Hill mine, Ogdensburg, Sussex Co., New Jersey, USA.
Mcguinnessite: (Mg,Cu)2(CO3)(OH)2 (Rosasite) Class: Carbonate. Type Locality: Red Mountain (locality #2), Mendocino Co., California, USA.
Meerschaum: Massive sepiolite suitable for carving (Varietal name).
Meionite: Ca4(Si,Al)12O24CO3 (Scapolite) Class: Silicate, Subclass: Tektosilicate. Type Locality: Monte Somma, Mt. Vesuvius, Napoli, Campania, Italy.
Melaconite: Tenorite (Varietal name).
Melanite: Andradite containing Ti, black color (Varietal name).
Melanterite: FeSO4+7H2O (Melanterite) Class: Sulfate.
Melilite: (Ca,Na)2(Al,Mg)(Si,Al)2O7 (Melilite) Class: Silicate.
Meliphanite: (Ca,Na)2Be(Si,Al)2(O,OH,F)7 Class: Silicate. Type Locality: Frediksvärn (near), Norway.
Mellite: Al2[C6(COO)6]+18H2O Class: Oxalate. Type Locality: Arten, Thüringen, Germany.
Mendipite: Pb3Cl2O2 Class: Chloride. Type Locality: Churchill, Mendip Hills, Somerset, England.
Mercury: Hg Class: Native Element, Subclass: Metals.
Mesolite: Na2Ca2Al6Si9O30+8H2O (Zeolite) Class: Silicate, Subclass: Tektosilicate. Type Locality: Iceland and Faröe Islands, Sweden.
Meta-autunite: Ca(UO2)2(PO4)2+2-6H2O (Meta-autunite) Class: Phosphate, Subclass: Uranyl-Phosphate.
Meta-uranocircite: Ba(UO2)2(PO4)2+8H2O (Meta-autunite) Class: Phosphate, Subclass: Uranyl-Phosphate.
Metacinnabar: HgS (Sphalerite) Class: Sulfide. Type Locality: Reddington Mine, Lake Co., California, USA.
Metatorbernite: Cu(UO2)2(PO4)2+8H2O (Meta-autunite) Class: Phosphate, Subclass: Uranyl-Phosphate. Type Locality: Schneeberg, Sachsen (Saxony), Germany.
Mica: Group name.
Microcline: KAlSi3O8 (Feldspar) Class: Silicate, Subclass: Tektosilicate. Type Locality: Fredriksvärn, Norway.
Microlite: (Ca,Na)2Ta2O6(O,OH,F) (Pyrochlore) Class: Oxide. Type Locality: Chesterfield, Hampshire Co., Massachusetts, USA.
Milarite: K2Ca4Al2Be4Si24O60+H2O (Osumilite) Class: Silicate. Type Locality: Val Giuf, Tavetsch, Grischun (Graubünden), Switzerland.
Millerite: NiS Class: Sulfide. Type Locality: Jáchymov (St. Joachimsthal), Západocesky kraj, Cechy (Bohemia), Czech Republic (Czechoslovakia).
Mimetite: Pb5(AsO4)3Cl (Apatite) Class: Arsenate, Subclass: Anhydrous Arsenate.
Minehillite: (K,Na)2Ca28Zn5AL4Si40O112(OH)16. Type Locality: Franklin, Sussex Co., New Jersey, USA.
Minium: Pb3O4 Class: Oxide. Type Locality: Langenheck, Hesse-Kassel, Germany.
Minrecordite: CaZn(CO3)2 (Dolomite) Class: Carbonate. Type Locality: Tsumeb, Namibia.
Miserite: KCa5Si8O22(OH)F. Type Locality: Wilson Mineral Springs, Hot Springs Co., Arkansas, USA.
Mixite: BiCu6(AsO4)3(OH)6+3H2O (Mixite) Class: Arsenate. Type Locality: Jáchymov (St. Joachimsthal), Západocesky kraj, Cechy (Bohemia), Czech Republic (Czechoslovakia).
Mizzonite: Intermediate member of the scapolite group.
Moctezumite: Pb(UO2)(TeO3)2. Type Locality: Moctezuma Mine, Moctezuma, Sonora, Mexico.
Molybdenite-2H: MoS2 Class: Sulfide. Type Locality: Bispberg Fe mine, Säter, Dalarne (Kopparberg), Sweden.
Molybdenite-3R: MoS2 Class: Sulfide. Type Locality: Con Mine, Yellowknife (S), Northwest Territories, Canada.
Molybdite: MoO3 Class: Oxide. Type Locality: Krupka, Srredocesky kraj, Cechy (Bohemia), Czech Republic (Czechoslovakia).
Monazite: (Ce,La,Nd,Th)PO4 (Monazite) Class: Phosphate, Subclass: Anhydrous Phosphate.
Monazite-(Ce): (Ce,La,Nd,Th)PO4 (Monazite) Class: Phosphate. Type Locality: Zlatoust, Ilmen Mts., Russia, USSR.
Monazite-(La): (La,Ce,Nd)PO4 (Monazite) Class: Phosphate.
Monazite-(Nd): (Nd,La,Ce)PO4 (Monazite) Class: Phosphate. Type Locality: Pta. Glogstafel, Val Formazza, Italy.
Montebrasite: LiAl(PO4)(OH,F) (Amblygonite) Class: Phosphate, Subclass: Fluorine-Hydroxyl Phosphate. Type Locality: Montebras, Soumans, Creuse, France.
Monteponite: CdO (Periclase) Class: Oxide. Type Locality: Monteponi mine, Iglesias, Cagliari, Sardegna (Sardinia), Italy.
Montgomeryite: Ca4MgAl4(PO4)6(OH)4+12H2O (Montgomeryite) Class: Phosphate. Type Locality: Clay Canyon (near), Fairfield, Utah Co., Utah, USA.
Montmorillonite: (Na,Ca)0.3(Al,Mg)2Si4O10(OH)2+nH2O (Smectite) Class: Silicate. Type Locality: Montmorillon, Vienne, France.
Mordenite: (Ca,Na2,K2)Al2Si10O24+7H2O (Zeolite) Class: Silicate. Type Locality: Morden (E), Kings Co., Nova Scotia, Canada.
Morganite: Pink or peach colored variety of beryl, contains Cs (Varietal name).
Morion: Smoky quartz (Varietal name).
Mottramite: PbCu(VO4)(OH) (Descloizite) Class: Vanadate, Subclass: Hydroxyl Vanadate. Type Locality: Mottram St. Andrew, Cheshire, England.
Murdochite: Pb2Cu12O15(Cl,Br)2. Type Locality: Mammoth mine, Tiger, Pinal Co., Arizona, USA.
Muscovite: KAl2(Si3Al)O10(OH,F)2 (Mica) Class: Silicate, Subclass: Phyllosilicate.

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Nadorite: PbSbO2Cl Class: Phosphate. Type Locality: Jebel Nador, Qacentina (Constantine), Algeria.
Narsarsukite: Na2(Ti,Fe)Si4(O,F)11.
Nasonite: Pb6Ca4Si6O21Cl2. Type Locality: Franklin Furnace, Sussex Co., New Jersey, USA.
Natroapophyllite: NaCa4Si8O20F+8H2O Class: Silicate, Subclass: Phyllosilicate.
Natrolite: Na2Al2Si3O10+2H2O (Zeolite) Class: Silicate, Subclass: Tektosilicate. Type Locality: Hohentweil, Högau (Hegau) dist., Württemberg, Germany.
Natromontebrasite: (Na,Li)Al(PO4)(OH,F) (Amblygonite) Class: Phosphate, Subclass: Fluorine-Hydroxyl Phosphate. Type Locality: Canyon City, Fremont Co., Colorado, USA.
Natron: Na2CO3+10H2O Class: Carbonate. Type Locality: Egypt.
Nepheline: (Na,K)AlSiO4 Class: Silicate, Subclass: Tektosilicate. Type Locality: Monte Somma, Mt. Vesuvius, Napoli, Campania, Italy.
Nephrite: Gem variety of compact actinolite or tremolite (Varietal name).
Neptunite: KNa2Li(Fe,Mn)2Ti2Si8O24 Class: Silicate, Subclass: Inosilicate. Type Locality: Narsarsuk, Greenland (S).
Niccolite: Nickeline (Varietal name).
Nickel: Ni Class: Native Element, Subclass: Metals. Type Locality: Bogota, Canala, New Caledonia.
Nickel-skutterudite: NiAs2-3 (Skutterudite) Class: Arsenide. Type Locality: Bullard's Peak dist., Grant Co., New Mexico, USA.
Nickeline: NiAs (Nickeline) Class: Arsenide.
Nissonite: Cu2Mg2(PO4)2(OH)2+5H2O Class: Phosphate. Type Locality: Panoche Valley, Benito Co., California, USA.
Niter: KNO3 Class: Nitrate.
Nontronite: Na0.3Fe2(Si,Al)4O10(OH)2+nH2O (Smectite) Class: Silicate. Type Locality: Saint-Pardoux, Nontron, Dordogne, France.
Norbergite: Mg3(SiO4)(F,OH)2 (Humite) Class: Silicate, Subclass: Nesosilicate. Type Locality: Norberg, Sweden.
Novacekite: Mg(UO2)2(AsO4)2+12H2O (Autunite) Class: Arsenate, Subclass: Hydrous Arsenate. Type Locality: Schneeberg, Sachsen (Saxony), Germany.
Novaculite: Fine-grained, light colored cryptocrystalline siliceous rock (Varietal name).

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Octahedrite: Anatase (Varietal name).
Ogdensburgite: (Ca,Zn,Mn)4Fe6(AsO4)5(OH)11+5H2O. Type Locality: Sterling Hill Mine, Ogdensburg, Sussex Co., New Jersey, USA.
Ojuelaite: ZnFe2(AsO4)2(OH)2+4H2O (Arthurite) Class: Arsenate. Type Locality: Ojuela mine, Mapimi, Durango, Mexico.
Okenite: Ca5Si9O23+9H2O Class: Silicate. Type Locality: Disko Island, Greenland (W).
Oligoclase:

Discredited. Type Locality: Danviken, Södermalm, Stockholm (SE), Sweden.
Olivenite: Cu2AsO4(OH) Class: Arsenate, Subclass: Hydroxyl Arsenate. Type Locality: Carharrack mine, Gwennap, Cornwall, England.
Olivine: Group name.
Omphacite: (Ca,Na)(Mg,Fe,Al)Si2O6 (Pyroxene) Class: Silicate, Subclass: Inosilicate. Type Locality: Hof (near), Bayern (Bavaria), Germany.
Opal: SiO2+nH2O Class: Silicate, Subclass: Tektosilicate.
Orpiment: As2S3 Class: Sulfide.
Orthite: Allanite (Varietal name).
Orthoclase: KAlSi3O8 (Feldspar) Class: Silicate, Subclass: Tektosilicate.
Orthoferrosilite: Ferrosilite (Varietal name).
Osmium: (Os,Ir) Class: Native Element. Type Locality: Borneo.
Otavite: CdCO3 (Calcite) Class: Carbonate. Type Locality: Tsumeb, Otavi, Namibia.
Overite: CaMgAl(PO4)2(OH)+4H2OPb10-2xAg3+xSb11+xS28 Class: Phosphate. Type Locality: Clay Canyon (near), Fairfield, Utah Co., Utah, USA.
Owyheeite: Pb10-2xAg3+xSb11+xS28. Type Locality: Poorman Mine, Silver City Dist., Owyhee Co., Idaho, USA.

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Palladium: Pd Class: Native Element, Subclass: Metals. Type Locality: Brazil.
Palygorskite: (Mg,Al)2Si4O10(OH)+4H2O. Type Locality: Palygorsk, Perm mining district, Ural Mts., Russia, USSR.
Panasqueiraite: CaMg(PO4)(OH,F) Class: Phosphate. Type Locality: Panasqueira mine, Panasqueira, Beira Baixa, Portugal.
Papagoite: CaCuAlSi2O6(OH)3. Type Locality: New Cornelia mine, Ajo, Pima Co., Arizona, USA.
Paramelaconite: Cu4O3 Class: Oxide. Type Locality: Copper Queen Mine, Bisbee, Cochise Co., Arizona, USA.
Pararealgar: AsS Class: Sulfide. Type Locality: Mount Washington copper deposit, Vancouver Island, British Columbia, Canada.
Paraveatchite: p-Veatchite (Varietal name).
Parawollastonite: Wollastonite-2M (Varietal name).
Pargasite: NaCa2(Mg,Fe)4Al(Si6Al2)O22(OH)2 (Amphibole) Class: Silicate, Subclass: Inosilicate. Type Locality: Pargas valley, Finland.
Parisite-(Ce): Ca(Ce,La)2(CO3)3F2 Class: Carbonate. Type Locality: Muso dist., Bogotá, Colombia.
Parisite-(Nd): Ca(Nd,Ce,La)2(CO3)3F2 Class: Carbonate. Type Locality: Bayan Obo, Inner Mongolia, China (N).
Pecoraite: Ni3Si2O5(OH)4 (Kaolinite-serpentine) Class: Silicate.
Pectolite: NaCa2Si3O8(OH) Class: Silicate, Subclass: Inosilicate. Type Locality: Montemaldo, Tyrol (S), Italy.
Pectolite-M2abc: NaCa2Si3O8(OH) Class: Silicate. Type Locality: Rauschermühle, Germany.
Penfieldite: Pb2Cl3(OH) Class: Halide. Type Locality: Lávrion (Laurium), Attikí, Greece.
Pentlandite: (Fe,Ni)9S8 (Pentlandite) Class: Sulfide. Type Locality: Craignure, Inverary, Argyllshire, Scotland.
Perhamite: Ca3Al7(SiO4)3(PO4)3(OH)3+16.5H2O. Type Locality: Bell Pit, Newry, Oxford Co., Maine, USA.
Periclase: MgO (Periclase) Class: Oxide. Type Locality: Monte Somma, Mt. Vesuvius, Napoli, Campania, Italy.
Peridot: Gem variety of olivene (especially forsterite) (Varietal name).
Perovskite: CaTiO3 (Perovskite) Class: Oxide.
Petalite: LiAlSi4O10 Class: Silicate. Type Locality: Utö, Sweden.
Petersite-(Y): (Y,Ce,Nd,Ca)Cu6(PO4)3(OH)6+3H2O (Mixite) Class: Phosphate. Type Locality: Laurel Hill, Secaucus, Hudson Co., New Jersey, USA.
Pharmacolite: CaHAsO4+2H2O Class: Arsenate. Type Locality: Wittichen, Schwarzwald, Germany.
Pharmacosiderite: KFe4(AsO4)3(OH)4+6-7H2O Class: Arsenate. Type Locality: Carharrack mine and Tincroft mine, Cornwall, England.
Phenakite: Be2SiO4 Class: Silicate, Subclass: Nesosilicate. Type Locality: Takovaya, Ekaterinburg (Sverdlovsk), Ural Mts., Russia, USSR.
Philipsbornite: PbAl3(AsO4)2(OH)5+H2O (Crandallite) Class: Arsenate. Type Locality: Dundas, Tasmania, Australia.
Phillipsite: (K,Na,Ca)1-2(Si,Al)8O16+6H2O (Zeolite) Class: Silicate. Type Locality: Near Aci Castello and Acireale, Catania prov., Sicilia (Sicily), Italy.
Phlogopite: KMg3Si3AlO10(F,OH)2 (Mica) Class: Silicate, Subclass: Phyllosilicate. Type Locality: Antwerp, Jefferson Co., New York, USA.
Phosgenite: Pb2(CO3)Cl2 Class: Carbonate. Type Locality: Cromford (near), Derbyshire, England.
Phosphoferrite: (Fe,Mn)3(PO4)2+3H2O Class: Phosphate. Type Locality: Hagendorf pegmatite, Oberpfalz, Bayern (Bavaria), Germany.
Phosphophyllite: Zn2(Fe,Mn)(PO4)2+4H2O Class: Phosphate, Subclass: Hydrated Phosphate. Type Locality: Hagendorf pegmatite, Oberpfalz, Bayern (Bavaria), Germany.
Phosphosiderite: FePO4+2H2O Class: Phosphate. Type Locality: Kalterborn mine, Eiserfeld (near), Siegen, Germany.
Pickeringite: MgAl2(SO4)4+22H2O (Halotrichite) Class: Sulfate. Type Locality: Cerro Pintados, Iquique, Tarapacá, Chile (N).
Piemontite: Ca2(Al,Mn,Fe)3(SiO4)3(OH) (Epidote) Class: Silicate, Subclass: Sorosilicate. Type Locality: Prabnora mine, St. Marcel, Val d'Aosta, Piemonte, Italy.
Pinchite: Hg5O4Cl2. Type Locality: Terlingua, Brewster Co., Texas, USA.
Plagioclase: (Na,Ca)(Si,Al)Si3O8 (Feldspar) Class: Silicate, Subclass: Tektosilicate.
Planchéite: Cu8Si8O22(OH)4+H2O. Type Locality: Mindouli, Zaïre.
Planerite: Al6(PO4)2(PO3OH)2(OH)8+4H2O (Turquoise) Class: Phosphate, Subclass: Hydrous Hydroxyl Phosphate. Type Locality: Gumeshevsk, Ural Mts., Russia, USSR.
Platinum: Pt Class: Native Element, Subclass: Metals.
Plattnerite: PbO2 (Rutile) Class: Oxide. Type Locality: Leadhills, Lanarkshire, Scotland.
Pleonaste: Ferroan spinel (Varietal name).
Plumbago: Graphite (Varietal name).
Plumbogummite: PbAl3(PO4)2(OH)5+H2O (Crandallite) Class: Phosphate.
Plumosite: Boulangerite or Jamesonite (Varietal name). Type Locality: Wolfsberg, Harz, Germany.
Plumosite: Boulangerite or Jamesonite (Varietal name).
Pollucite: (Cs,Na)2Al2Si4O12+H2O (Zeolite) Class: Silicate. Type Locality: Elba, Toscana, Italy.
Polybasite: (Ag,Cu)16Sb2S11 Class: Sulfosalt. Type Locality: Guarisamey, Durango, Mexico.
Polycrase-(Y): (Y,Ca,Ce,U,Th)(Ti,Nb,Ta)2O6 Class: Oxide. Type Locality: Rasvåg, Hiterö (island), Flekkefjord (near), Norway.
Polydymite: Ni3S4 (Linnaeite) Class: Sulfide. Type Locality: Grünau, Sayn-Altenkirchen, Nordrhein-Westfalen, Germany.
Polylithionite: KLi2AlSi4O10(F,OH)2 (Mica) Class: Silicate, Subclass: Phyllosilicate. Type Locality: Kangerdluarsuk, Ilímaussaq intrusive, Greenland (S).
Potassium feldspar: Microcline, Orthoclase or Sanidine (Varietal name).
Poughite: Fe2(TeO3)2(SO4)+3H2O. Type Locality: Moctezuma Mine, Moctezuma, Sonora, Mexico ; El Plomo Mine, Ojonjona Dist., Tegucigalpa, Honduras.
Powellite: CaMoO4 Class: Molybdate. Type Locality: Peacock lode, Seven Devils dist., Adams Co., Utah, USA.
Prehnite: Ca2Al2Si3O10(OH)2 Class: Silicate. Type Locality: Cape of Good Hope, South Africa.
Proustite: Ag3AsS3 Class: Sulfosalt.
Pseudoboléite: Pb31Cu24Cl62(OH)48 Class: Halide. Type Locality: Boléo, Santa Rosalia (near), Baja California, Mexico.
Pseudobrookite: Fe2(Fe,Ti)O5 Class: Oxide. Type Locality: Magura Uroiu, (Aranyi-hegy or Aranyer Berg), Uroiu (Arany), Transylvania, Romania.
Pseudomalachite: Cu5(PO4)2(OH)4.H2O Class: Phosphate.
Pseudomesolite: Mesolite (Varietal name).
Psilomelane: Romanechite or general term for unknown Mn-oxides (Varietal name).
Ptilolite: Mordenite (Varietal name).
Pumpellyite-(Fe2+): Ca2FeAl2(SiO4)(Si2O7)(OH)2+H2O (Pumpellyite) Class: Silicate. Type Locality: Långban mine, Filipstad (near), Värmland, Sweden.
Pumpellyite-(Fe3+): Ca2FeAl2(SiO4)(Si2O7)(OH)2+H2O (Pumpellyite) Class: Silicate. Type Locality: Långban mine, Filipstad (near), Värmland, Sweden.
Pumpellyite-(Mg): Ca2MgAl2(SiO4)(Si2O7)(OH)2+H2O (Pumpellyite) Class: Silicate. Type Locality: Keweenawan copper deposits, Lake Superior region, Michigan, USA.
Pumpellyite-(Mn2+): Ca2MnAl2(SiO4)(Si2O7)(OH)2+H2O (Pumpellyite) Class: Silicate. Type Locality: Ochiai mine, Yamanashi, Japan.
Purpurite: (Mn,Fe)PO4 Class: Phosphate, Subclass: Anhydrous Phosphate. Type Locality: Faires tin mine, Kings Mt., Gaston Co., North Carolina, USA; Pala, San Diego Co., California, USA.
Pyrargyrite: Ag3SbS3 Class: Sulphantimonite.
Pyrite: FeS2 (Pyrite) Class: Sulfide.
Pyrochlore: (Ca,Na)2Nb2O6(OH,F) (Pyrochlore) Class: Oxide. Type Locality: Fredriksvärn, Norway.
Pyrolusite: MnO2 (Rutile) Class: Oxide.
Pyromorphite: Pb5(PO4)3Cl (Apatite) Class: Phosphate, Subclass: Anhydrous Phosphate.
Pyrope: Mg3Al2(SiO4)3 (Garnet) Class: Silicate, Subclass: Nesosilicate. Type Locality: Czech Republic, Czechoslovakia.
Pyrophyllite-2M1: Al2Si4O10(OH)2 (Kaolinite-serpentine) Class: Silicate, Subclass: Pyllosilicate. Type Locality: Pyschminsk and Berezov, Ural Mts., Russia, USSR.
Pyroxene: Group name.
Pyrrhotite: Fe1-xS Class: Sulfide.

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Quartz: SiO2 Class: Silicate, Subclass: Tektosilicate.
Rammelsbergite: NiAs2 (Lollingite) Class: Arsenide. Type Locality: Schneeberg, Sachsen (Saxony), Germany.
Ramsdellite: MnO2. Type Locality: Lake Valley, Sierra Co., New Mexico.
Realgar: AsS Class: Sulfide.
Realgar (high): AsS Class: Sulfide. Type Locality: Alacrán mine, Pampa Larga dist., Copiapó (Near), Atacama, Chile.
Rhabdophane-(Ce): (Ce,La)PO4+H2O (Rhabdophane) Class: Phosphate, Subclass: Hydrated Phosphate. Type Locality: Fowey Consols mine, Cornwall, England.
Rhabdophane-(La): (La,Ce)PO4+H2O (Rhabdophane) Class: Phosphate, Subclass: Hydrated Phosphate. Type Locality: Undisclosed Locality, Russia(?), USSR.
Rhabdophane-(Nd): (Nd,Ce,La)PO4+H2O (Rhabdophane) Class: Sulfide, Subclass: Hydrated Phosphate. Type Locality: Salisbury, Litchfield Co., Connecticut, USA.
Rhenium: Re Class: Native Element. Type Locality: Zabaikal'ye region (Transbaikal), Russia, USSR.
Rhodesite: HKCa2Si8O19+5H2O Class: Silicate. Type Locality: Bultfontein Mine, Kimberley, South Africa.
Rhodium: (Rh,Pt) Class: Native Element. Type Locality: Stillwater Complex, Montana, USA.
Rhodizite: (Cs,K)Al4Be4(B,Be)12O28 Class: Borate. Type Locality: Sarapulsk and Shaitansk, Mursinsk (near), Ekaterinburg, (Sverdlovsk), Ural Mts., Russia, USSR*.
Rhodochrosite: MnCO3 (Calcite) Class: Carbonate. Type Locality: Cavnic (Kapnikbánya or Siebenbürgen), Transylvania, Romania.
Rhodonite: (Mn,Fe,Mg,Ca)SiO3 Class: Silicate, Subclass: Inosilicate.
Richelsdorfite: Ca2Cu5Sb(AsO4)4Cl(OH)6+6H2O. Type Locality: Bauhaus Mine, Richelsdorf (near), Hessen, Germany.
Richterite: Na2Ca(Mg,Fe)5Si8O22(OH)2 (Amphibole) Class: Silicate, Subclass: Inosilicate. Type Locality: Långban and Pajsberg, Värmland, Sweden.
Riebeckite: Na2(Fe,Mg)3Fe2Si8O22(OH)2 (Amphibole) Class: Silicate, Subclass: Inosilicate. Type Locality: Socotra island, Indian Ocean (Yemen).
Robertsite: Ca3Mn4(PO4)4(OH)6+3H2O. Type Locality: Tip Top Pegmatite, Custer, Custer Co., South Dakota, USA.
Rockbridgeite: (Fe,Mn)5(PO4)3(OH)5 Class: Phosphate. Type Locality: South Mountain (near), Midvale, Rockbridge Co., Virginia, USA.
Roeblingite: Pb2Ca6Mn(Si6O18)(SO4)2(OH)2+4H2O. Type Locality: Franklin Furnace, Sussex Co., New Jersey, USA.
Romanèchite: (Ba,H2O)2Mn5O10 Class: Oxides. Type Locality: Romanèche-Thorins, Mâcon (near), Saône et Loire, France.
Romarchite: SnO. Type Locality: Boundary Falls, Winnipeg River, Kenora dist., Ontario, Canada.
Röntgenite-(Ce): Ca2(Ce,La)3(CO3)5Fe3. Type Locality: Narsarsuk, Greenland (S).
Rosasite: (Cu,Zn)2(CO3)(OH)2 (Rosasite) Class: Carbonate. Type Locality: Rosas mine, Narcao, Cagliari, Sardegna (Sardinia), Italy.
Rosiaite: PbSb2O6. Type Locality: Tafone mine, Grosseto, Tuscany, Italy.
Rossite: CaV2O6+4H2O Class: Vanadium Oxysalt. Type Locality: Wm. O'Neill's Claim, Bull Pen Canyon, San Miguel Co., Colorado, USA.
Rossmanite : Discredited.
Rubellite: Pink to red variety of elbaite (Varietal name).
Ruby: Red variety of corundum (Varietal name).
Rutile: TiO2 Class: Oxide. Type Locality: Cajuelo, Burgos, Spain.

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Safflorite: CoAs2 (Lollingite) Class: Arsenide. Type Locality: Nordmark, Vårmland, Sweden.
Sahlite+A776: Salite, a variety of Diopside (Varietal name).
Salite: Diopside (Varietal name).
Saltpeter: Niter (Varietal name).
Samarskite-(Y): (Y,Ce,U,Fe)3(Nb,Ta,Ti)5O16 Class: Oxide. Type Locality: Miass, Zlatoust reg., Ilmen Mts., Russia, USSR.
Samuelsonite: (Ca,Ba)Ca8(Fe,Mn)4Al2(PO4)10(OH)2. Type Locality: Palermo #1 Mine, North Groton, Grafton Co., New Hampshire, USA.
Sanbornite: BaSi2O5. Type Locality: Trumbull Peak, Incline (near), Mariposa Co., California, USA.
Sanidine: (K,Na)(Si,Al)4O8 (Feldspar) Class: Silicate, Subclass: Tektosilicate. Type Locality: Drachenfels, Eifel, Rheinland, Germany.
Saponite: (Ca,Na)0.3(Mg,Fe)3(Si,Al)4O10(OH)2+4H2O (Smectite) Class: Silicate.
Sapphire: Gem corundum, all colors other than red (Varietal name).
Sarcopside: (Fe,Mn,Mg)3(PO4)2 Class: Phosphate.
Scapolite: Group name.
Scheelite: CaWO4 Class: Tungstate. Type Locality: Bispberg Fe mine, Säter, Dalarne (Kopparberg), Sweden.
Schorl: NaFe3Al6(BO3)3Si6O18(OH)4 (Tourmaline) Class: Silicate, Subclass: Cyclosilicate.
Schröckingerite: NaCa3(UO2)(CO3)3(SO4)F+10H2O Class: Carbonate. Type Locality: Jáchymov (St. Joachimsthal), Západocesky kraj, Cechy (Bohemia), Czech Republic (Czechoslovakia).
Scolecite: CaAl2Si3O10+3H2O (Zeolite) Class: Silicate, Subclass: Tektosilicate. Type Locality: Berufjord, Iceland.
Scorodite: FeAsO4+2H2O (Variscite) Class: Phosphate, Subclass: Hydrated Phosphate.
Scorzalite: (Fe,Mg)Al2(PO4)2(OH)2 (Lazulite) Class: Anhydrous Phosphate, Subclass: Hydroxyl Phosphate. Type Locality: Corrego Frio pegmatite, Minas Gerais, Brazil.
Selenite: Colorless transparent gypsum (Varietal name).
Selenium: Se Class: Native Element, Subclass: Semi-Metals.
Semseyite: Pb9Sb8S21 Class: Sulpharsenate. Type Locality: Baia Sprie, Maramures, Romania.
Senarmontite: Sb2O3 Class: Oxide.
Sepiolite: Mg4Si6O15(OH)2+6H2O Class: Silicate.
Serandite: Na(Mn,Ca)2Si3O8(OH) Class: Silicate. Type Locality: Roma Island, Los Islands, Guinea.
Sericite: Fine grained muscovite, illite or paragonite (Varietal name).
Serpentine: Group name (Kaolinite-serpentine) Class: Silicate, Subclass: Phyllosilicate.
Serpierite: Ca(Cu,Zn)4(SO4)2(OH)6+3H2O Class: Sulfate. Type Locality: Lávrion (Laurium), Attikí, Greece*.
Shattuckite: Cu5(SiO3)4(OH)2. Type Locality: Shattuck Mine, Bisbee, Cochise Co., Arizona, USA.
Sicklerite: Li(Mn,Fe)PO4 Class: Phosphate. Type Locality: Naylor-Vanderburg Mine, Pala (near), San Diego Co., California, USA*.
Siderite: FeCO3 (Calcite) Class: Carbonate.
Siegenite: (Ni,Co)3S4 (Linnaeite) Class: Sulfide.
Silicon: Si Class: Native Element, Subclass: Semi-Metals. Type Locality: Kimberlitic rock, Russia, USSR.
Sillimanite: Al2SiO5 Class: Silicate, Subclass: Nesosilicate. Type Locality: Vltava, Susice, Czech Republic, Czechoslovakia.
Silver-2H: Ag Class: Native Element, Subclass: Metals. Type Locality: Unspecified locality, Russia (NE), USSR.
Silver-3C: Ag Class: Native Element, Subclass: Metals.
Silver-4H: Ag Class: Native Element, Subclass: Metals. Type Locality: Unspecified locality, Russia (NE), USSR.
Sinhalite: MgAlBO4. Type Locality: Sri Lanka.
Sinkankasite: H2MnAl(PO4)2(OH)+6H2O.
Sklodowskite: (H3O)2Mg(UO2)2(SiO4)2+2H2O. Type Locality: Kasolo (Shinkolobwe), Shaba, Zaïre.
Skutterudite: CoAs3 (Skutterudite) Class: Arsenide. Type Locality: Skutterud, Modum, Norway.
Smectite: Group name.
Smithsonite: ZnCO3 (Calcite) Class: Carbonate. Type Locality: Mendip Hills and Derbyshire, England.
Soda-niter: Nitratite (Varietal name).
Sodalite: Na8Al6Si6O24Cl2 (Sodalite) Class: Silicate, Subclass: Tektosilicate. Type Locality: Kangerdluarsuk, Ilímaussaq intrusive, Greenland (S).
Spangolite: Cu6Al(SO4)(OH)12Cl+3H2O Class: Sulfate. Type Locality: Globe dist., Tombstone (near), Cochise Co., Arizona, USA.
Species: Group. Type Locality: Type Locality.
Specularite: Micaceous or flaky hematite (Varietal name).
Sperrylite: PtAs2 (Pyrite) Class: Arsenide. Type Locality: Vermilion mine, Denison twp., Sudbury Dist., Ontario, Canada.
Spessartine: Mn3Al2(SiO4)3 (Garnet) Class: Silicate, Subclass: Nesosilicate. Type Locality: Aschaffenburg, Spessart (near), Germany.
Spessartite: Spessartine (Varietal name).
Sphaerocobaltite: CoCO3 (Calcite) Class: Carbonate. Type Locality: Danile mine, Neustädtel, Freiberg, Sachsen (Saxony), Germany.
Sphaerosiderite: Siderite in spheroidal forms (Varietal name).
Sphalerite: (Zn,Fe)S (Sphalerite) Class: Sulfide.
Sphene: Titanite (Varietal name).
Spinel: MgAl2O4 (Spinel) Class: Oxide.
Spodumene: LiAlSi2O6 (Pyroxene) Class: Silicate, Subclass: Inosilicate. Type Locality: Utö, Södermanland, Sweden.
Squawcreekite: FeSbO4. Type Locality: Squaw Creek tin prospect, Catron Co., New Mexico, USA.
Stannite: Cu2FeSnS4 (Stannite) Class: Sulfide. Type Locality: Wheal Rock, St. Agnes, Cornwall, England.
Staringite: Discredited (Varietal name).
Staurolite: (Fe,Mg,Zn)2Al9(Si,Al)4O22(OH)2 Class: Silicate, Subclass: Nesosilicate.
Steatite: Compact, dense rock form of talc (Varietal name).
Stellerite: CaAl2Si7O18+7H2O (Zeolite) Class: Silicate. Type Locality: Komandor Islands, Bering Sea.
Stephanite: Ag5SbS4 Class: Sulfosalt. Type Locality: Freiberg, Sachsen (Saxony), Germany.
Sterlinghillite: Mn3(AsO4)2+4H2O. Type Locality: Sterling Hill Mine, Ogdensburg, Sussex Co., New Jersey, USA.
Stevensite: Mg3Si4O10(OH)2 (Smectite) Class: Silicate. Type Locality: Bergen Hill, New Jersey, USA.
Stibarsen: SbAs (Arsenic). Class: Native Element. Type Locality: Varuträsk pegmatite, Boliden mines (SE), Skellefteå (near), Västerbotten, Sweden.
Stibiconite: Sb3O6(OH) (Stibiconite) Class: Oxide, Subclass: Hydroxide. Type Locality: Goldkronach, Bayern (Bavaria), Germany.
Stibiocolumbite: SbNbO4 Class: Oxide.
Stibiopearcite: Antimonpearceite (Varietal name).
Stibiotantalite: SbTaO4 Class: Oxide. Type Locality: Greenbushes, Western Australia, Australia.
Stibnite: Sb2S3 Class: Sulfide.
Stilbite: NaCa2Al5Si13O36+14H2O (Zeolite) Class: Silicate, Subclass: Tektosilicate.
Stilpnomelane: K(Fe,Al)10Si12O30(OH)13. Type Locality: Obergrund, Zuckmantel (near), Silesia, Poland.
Stishovite: SiO2 (Rutile) Class: Oxide. Type Locality: Coconino sandstone, Meteor Crater, Coconino Co., Arizona, USA.
Stolzite: PbWO4 Class: Tungstate. Type Locality: Cínovec (Zinnwald), Krusné Hory (Erzgebirge), Cechy (Bohemia), Czech Republic (Czechoslovakia)*.
Strengite: FePO4+2H2O (Variscite) Class: Phosphate, Subclass: Hydrated Phosphate. Type Locality: Eleonore mine, Giessen (near), Hessen, Germany.
Stromeyerite: AgCuS Class: Sulfide. Type Locality: Zmeinogorsk mine, Kolyvan (near), Siberia, Russia, USSR*.
Strontianite: SrCO3 (Aragonite) Class: Carbonate. Type Locality: Strontian, Argyllshire, Scotland.
Strunzite: MnFe2(PO4)2(OH)2+8H2O. Type Locality: Hagendorf pegmatite, Oberpfalz, Bayern (Bavaria), Germany.
Struverite, strüverite, strueverite: (Ti,Ta,Fe)3O6.
Struvite: (NH4)MgPO4+6H2O Class: Phosphate, Subclass: Hydrated Phosphate. Type Locality: Hamburg, Germany*.
Stutzite, stützite, stuetzite: Ag5-xTe3. Type Locality: Sacarîmb (Nagyág), Transylvania, Romania.
Sugilite: KNa2(Fe,Mn,Al)2Li3Si12O30 (Osumilite) Class: Silicate. Type Locality: Iwagi Islet, Ochi Gun, Ehime Pref., Japan.
Sulfur (Sulphur): S Class: Native Element, Subclass: Non-Metals.
Sussexite: MnBO2(OH). Type Locality: Franklin Hill Mine, Sussex Co., New Jersey, USA.
Sylvanite: (Au,Ag)2Te4. Type Locality: Baia de Aries (Aranyosbánya) and Sacarîmb (Nagyág), Transylvania, Romania.
Sylvite: KCl Class: Halide. Type Locality: Mt. Vesuvius, Napoli, Campania, Italy.
Szenicsite: Cu3(MoO4)(OH)4. Type Locality: Tierra Amarillo, Copiapo (near), Atacama, Chile.
Taaffeite: Mg3Al8BeO16. Type Locality: Unknown locality, Sri Lanka (?).

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Talc: Mg3Si4O10(OH)2 Class: Silicate, Subclass: Pyllosilicate.
Tantalowodginite: Discredited (Varietal name).
Taramellite: Ba4(Fe,Ti,Mg)4(B2Si8O27)O2Clx.
Tarbuttite: Zn2(PO4)(OH) Class: Phosphate. Type Locality: Kabwe (Broken Hill), Central province, Zambia.
Tellurite: TeO2 Class: Oxide. Type Locality: Fata Baii (Facebáj or Facebánya) Zlatna (near) Transylvania, Romania*.
Tellurium: Te Class: Native Element, Subclass: Semi-Metals. Type Locality: Fata Baii (Faczebáj or Facebánya), Zlatna (near), Transylvania, Romania.
Tennantite: (Cu,Fe)12As4S13 (Tetrahedrite) Class: Sulfosalt. Type Locality: Redruth/ St. Day area, Cornwall, England.
Tenorite: CuO Class: Oxide. Type Locality: Mt. Vesuvius, Napoli, Campania, Italy.
Terlinguaite: Hg2ClO Class: Halide. Type Locality: Terlingua, Brewster Co., Texas, USA*.
Tetradymite: Bi2Te2S (Tetradymite) Class: Telluride. Type Locality: Zupkov (Schubkau, Zsubkó), Slovakia.
Tetrahedrite: (Cu,Fe)12Sb4S13 (Tetrahedrite) Class: Sulfosalt.
Tetranatrolite: Na2Al2Si3O10+2H2O (Zeolite) Class: Silicate. Type Locality: Ilímaussaq intrusive, Greenland and Mont Saint-Hilaire, Rouville Co., Québec, Canada.
Thaumasite: Ca3Si(CO3)(SO4)(OH)6+12H2O (Ettringite) Class: Sulfate. Type Locality: Bjelke mine, Åreskuta, Jämtland, Sweden.
Thenardite: Na2SO4 Class: Sulfate. Type Locality: Espartinas salt lake, Aranjuez, Madrid, Spain*.
Thomsonite: NaCa2Al5Si5O20+6H2O (Zeolite) Class: Silicate, Subclass: Tektosilicate. Type Locality: Old Kilpatrick, Dumbartonshire, Scotland.
Thorianite: ThO2 Class: Oxide. Type Locality: Balangoda, Sabaragamuwa prov., Sri Lanka*.
Thorite: (Th,U)SiO4. Type Locality: Lövö Island, Brevik (near), Langesundfjord, Norway.
Thornasite: (Na,K)ThSi11(O,H2O,F,Cl)33. Type Locality: De Mix quarry, Mont Saint-Hilaire, Rouville Co., Québec, Canada.
Thorogummite: (Th,U)(SiO4)1(OH)4. Type Locality: Bluffton, Llano Co., Texas, USA.
Thulite: Pink variety of zoisite (Varietal name).
Tincalconite: Na2B4O5(OH)4+3H2O Class: Borate, Subclass: Hydrated Borate. Type Locality: Searles Lake, San Bernardino Co., California, USA.
Tinticite: Fe6P4O19 Class: Phosphate. Type Locality: Tintic Standard Mine, Tintic mining dist., Utah, USA*.
Tirodite: Mn2(Mg,Fe)5Si8O22(OH)2 (Amphibole) Class: Silicate, Subclass: Inosilicate.
Titanite: CaTiSiO5 Class: Silicate. Type Locality: Passau, Bayern, Germany(?).
Tivanite: VTiO3(OH). Type Locality: Kalgoorlie, Western Australia, Australia.
Topaz: Al2SiO4(F,OH)2 Class: Silicate, Subclass: Nesosilicate.
Topazolite: Yellowish green to yellowish, transparent variety of andradite (Varietal name).
Torbernite: Cu(UO2)2(PO4)2+8-12H2O Class: Phosphate, Subclass: Hydrous Phosphate. Type Locality: Jáchymov (St. Joachimsthal), Západocesky kraj, Cechy (Bohemia), Czech Republic (Czechoslovakia).
Tourmaline: Group name.
Tremolite: Ca2(Mg,Fe)5Si8O22(OH)2 (Amphibole) Class: Silicate, Subclass: Inosilicate. Type Locality: Tremola Valley, St. Gotthard, Switzerland.
Trevorite: NiFe2O4 (Spinel) Class: Oxide. Type Locality: Barberton, Transvaal, South Africa.
Trichalcite: Tyrolite (Varietal name).
Tridymite: SiO2 Class: Silicate, Subclass: Tektosilicate. Type Locality: Cerro San Cristóbal, Pachuca, Mexico.
Trilithionite: KL1.5Al1.5AlSi3O10F2 (Mica) Class: Silicate, Subclass: Phyllosilicate.
Triphane: Spodumene (Varietal name).
Triphylite: LiFePO4 Class: Phosphate, Subclass: Anhydrous Phosphate. Type Locality: Hühnerkobel, Rabenstein (near), Bayern (Bavaria), Germany.
Triplite: (Mn,Fe,Mg,Ca)2(PO4)(F,OH) Class: Phosphate. Type Locality: Chanteloube, Limoges, Haute-Vienne, France*.
Trona: Na3(CO3)(HCO3)+2H2O Class: Carbonate.
Troostite: Manganoan willemite (Varietal name).
Tsumebite: Pb2Cu(PO4)(SO4)(OH) (Brackebuschite) Class: Phosphate-Arsenate. Type Locality: Tsumeb, Otavi, Namibia.
Tugtupite: Na4AlBeSi4O12Cl. Type Locality: Tugtup agtakorfia, Ilímaussaq intrusion, Greenland (S).
Tungstenite: WS2 Class: Sulfide. Type Locality: Emma Mine, Little Cottonwood district, Salt Lake County, Utah, USA*.
Tungstite: WO3+H2O Class: Oxide. Type Locality: Lanes' Mine, Monroe, Fairfield Co., Connecticut, USA.
Turneaureite: Ca5[(As,P)O4]3Cl (Apatite) Class: Phosphate-Arsenate, Subclass: Anhydrous Phosphate-Arsenate. Type Locality: Långban Mine, Filipstad (near), Värmland, Sweden ; Balmat, St. Lawrence Co., New York, USA ; Franklin, Sussex Co., New Jersey, USA.
Turquoise: CuAl6(PO4)4(OH)8+4H2O (Turquoise) Class: Phosphate, Subclass: Hydrous Hydroxyl Phosphate.
Tyrolite: CaCu5(AsO4)2(CO3)(OH)4+6H2O. Type Locality: Galkenstein or Schwatz, Tyrol, Austria.
Tyrrellite: (Cu,Co,Ni)3Se4 (Linnaeite) Class: Sulfide. Type Locality: Beaver Lodge Lake, Goldfields district, Saskatchewan, Canada.
Tyuyamunite: Ca(UO2)2V2O8+5-8H2O. Type Locality: Tyuya Muyun, Fergana, Uzbekistan, USSR.

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Ulexite: NaCaB5O6(OH)6+5H2O Class: Borate, Subclass: Hydrated Borate. Type Locality: Iquique, Tarapacá, Chile.
Ullmannite: NiSbS (Cobaltite) Class: Sulfide. Type Locality: Freusburg, Siegen (Near), Nordrhein-Westfalen, Germany.
Ulrichite: CaCu(UO2)(PO4)2+4H2O Class: Phosphate. Type Locality: Lake Boga, Victoria, Australia.
Uralite: Amphibole (actinolite) pseudomorph of a pyroxene (Varietal name). Type Locality: Ural Mts., Russia, USSR.
Uraninite: UO2 Class: Oxide. Type Locality: Jáchymov (St. Joachimsthal), Západocesky kraj, Cechy (Bohemia), Czech Republic (Czechoslovakia).
Uranmicrolite: (U,Ca,Ce)2(Ta,Nb)2O6(OH,F). Type Locality: Posse farm, Conçeicao Co., Minas Gerais, Brazil and/or Mitchell Co. mica mines, North Carolina, USA.
Uranocircite: Ba(UO2)2(PO4)2+12H2O (Autunite) Class: Phosphate, Subclass: Hydrous Phosphate. Type Locality: Bergen, Falkenstein (near), Vogtland, Sachsen (Saxony), Germany.
Uranocircite I: Ba(UO2)2(PO4)2+12H2O. Type Locality: Menzenschwand, Schwarzwald (S), Germany.
Uranophane: Ca(UO2)2SiO3(OH)2+5H2O. Type Locality: Miedzianka (Kupferberg), Silesia, Poland.
Urea: CO(NH2)2. Type Locality: Toppin Hill, Western Australia, Australia.
Uvarovite: Ca3Cr2(SiO4)3 (Garnet) Class: Silicate, Subclass: Nesosilicate. Type Locality: Bissersk, Saransk (Near), Mordovskaya, Russia, USSR.
Uvite: (Ca,Na)(Mg,Fe)3Al5Mg(BO3)3Si6O18(OH,F)4 (Tourmaline) Class: Silicate, Subclass: Cyclosilicate. Type Locality: Uva, Sri Lanka.

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Valentinite: Sb2O3 Class: Oxide. Type Locality: Chalanches, Allemont (near), Dauphiné, France*.
Vanadinite: Pb5(VO4)3Cl (Apatite) Class: Vanadate, Subclass: Anhydrous Vanadate. Type Locality: Zimapan, Hildalgo, Mexico.
Variscite: AlPO4+2H2O (Variscite) Class: Phosphate, Subclass: Hydrated Phosphate. Type Locality: Messbach, Plauen (near), Vogtland (Variscia), Thuringen, Germany.
Vauxite: FeAl2(PO4)2(OH)2+6H2O Class: Phosphate. Type Locality: Siglo XX mine, Llallagua, Potosí, Bolivia.
Vermiculite: (Mg,Fe,Al)3(Al,Si)4O10(OH)2+4H2O. Type Locality: Milbury, Worcester Co., Massachusetts, USA.
Verplanckite: Ba2(Mn,Fe,Ti)Si2O6(O,OH,Cl,F)2+3H2O. Type Locality: Big Creek and Rush Creek, Fresno Co., California, USA.
Vesuvianite: Ca10Mg2Al4(SiO4)5(Si2O7)2(OH)4 Class: Silicate, Subclass: Sorosilicate. Type Locality: Mt. Vesuvius, Napoli, Campania, Italy.
Villamaninite: (Cu,Ni,Co,Fe)S2 (Pyrite) Class: Sulfide. Type Locality: Roma Island, Los Islands, Guinea.
Villiaumite: NaF Class: Halide. Type Locality: Los, French Guinea*.
Violarite: FeNi2S4 (Linnaeite) Class: Sulfide.
Vivianite: Fe3(PO4)2+8H2O (Vivianite) Class: Phosphate, Subclass: Hydrated Phosphate. Type Locality: St. Agnes, Cornwall, England.
Volborthite: Cu3V2O7(OH)2+2H2O.
Voltaite: K2Fe9(SO4)12+18H2O Class: Sulfate. Type Locality: Pozzuoli, Naples, Italy*.

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Wad: Hydrated Mn oxides (Varietal name).
Wagnerite: (Mg,Fe)2(PO4)F Class: Phosphate. Type Locality: Höllengraben, Werfen (near), Salzburg, Austria.
Wardite: NaAl3(PO4)(OH)4+2H2O Class: Phosphate. Type Locality: Clay Canyon, Fairfield, Utah Co., Utah, USA.
Warwickite: (Mg,Ti,Fe,Al)2(BO3)O Class: Borate. Type Locality: 2-1/2 Miles SW of Edenville, Warwick, Orange Co., New York, USA*.
Wavellite: Al3(PO4)2(OH,F)3+5H2O Class: Phosphate, Subclass: Hydrous Phosphate. Type Locality: High Down quarry, Heddon, Filleigh, South Molton (near), Devon, England.
Weloganite: Sr3Na2Zr(CO3)6+3H2O Class: Carbonate. Type Locality: Francon quarry, St.-Michel, Montreal Island, Québec, Canada.
Wendwilsonite: Ca2(Mg,Co)(AsO4)2+2H2O (Roselite) Class: Arsenate. Type Locality: Bou Azzer, Morocco; Sterling Hill mine, Ogdensburg, Sussex Co., New Jersey, USA; Coahuila, Mexico.
Wernerite: Intermediate member of the scapolite group.
Wheatleyite: Na2Cu(C2O4)2+2H2O. Type Locality: Wheatley Mine, Phoenixville (near), Chester Co., Pennsylvania, USA; Nishimomaki mine, Gumma pref., Japan.
Wherryite: Pb7Cu2(SO4)(SiO4)2(OH)2 Class: Sulfate. Type Locality: Mammoth Mine, Tiger, Pinal Co., Arizona, USA*.
Whewellite: CaC2O4+H2O Class: Oxalate. Type Locality: Unknown*.
Whiteite-(CaFeMg): Ca(Fe,Mn)Mg2Al2(PO4)4(OH)2+8H2O (Whiteite) Class: Phosphate. Type Locality: Ilha de Taquaral, Minas Gerais, Brazil.
Whiteite-(CaMnMg): CaMnMg2Al2(PO4)4(OH)2+8H2O (Whiteite) Class: Phosphate. Type Locality: Tip Top pegmatite, Custer, Custer Co., South Dakota, USA.
Whiteite-(MnFeMg): MnFe,Mg2Al2(PO4)4(OH)2+8H2O (Whiteite) Class: Phosphate. Type Locality: Ilha de Taquaral, Minas Gerais, Brazil.
Whitlockite: Ca9(Mg,Fe)H(PO4)7 Class: Phosphate. Type Locality: Palermo #1 Pegmatite, North Groton, Grafton Co., New Hampshire, USA*.
Whitmoreite: Fe3(PO4)2(OH)2+4H2O (Arthurite) Class: Phosphate. Type Locality: Big Chief pegmatite, Glendale, South Dakota; Palermo #1 Mine, North Groton, Grafton Co., New Hampshire, USA.
Willemite: Zn2SiO4 Class: Silicate, Subclass: Nesosilicate. Type Locality: Franklin Furnace or Sterling Hill, Sussex Co., New Jersey, USA.
Witherite: BaCO3 (Aragonite) Class: Carbonate. Type Locality: Alston Moor, Cumberland, England.
Wodginite: (Ta,Nb,Sn,Mn,Fe)16O32 (Wodginite) Class: Oxide. Type Locality: Wodgina, Western Australia, Australia.
Woldramite: Intermediate member of the ferberite-huebnerite series.
Wolfeite: (Fe,Mn)2(PO4)(OH) Class: Phosphate. Type Locality: Palermo pegmatite, North Groton, Grafton Co., New Hampshire, USA*.
Wolframite: Intermediate member of the ferberite-huebnerite series (Wolframite Series) Class: Tungstate.
Wollastonite-1A: CaSiO3 Class: Silicate, Subclass: Inosilicate. Type Locality: Dognecea, Banat, Timisoara (SE), Banat, Romania.
Wollastonite-2M: CaSiO3 Class: Silicate, Subclass: Inosilicate. Type Locality: Csiklova, Romania.
Wollastonite-3A: CaSiO3 Class: Silicate, Subclass: Inosilicate. Type Locality: Kushiro, Hiroshima, Japan.
Wollastonite-4A: CaSiO3 Class: Silicate, Subclass: Inosilicate. Type Locality: Kushiro, Hiroshima, Japan.
Wollastonite-5A: CaSiO3 Class: Silicate, Subclass: Inosilicate. Type Locality: Kushiro, Hiroshima, Japan.
Wollastonite-7A: CaSiO3 Class: Silicate, Subclass: Inosilicate. Type Locality: Fuka, Okayama, Japan.
Woodhouseite: CaAl3(PO4)(SO4)(OH)6 (Beaudantite) Class: Sulfate-Phosphate. Type Locality: Champion andalusite mine, Mono Co., California, USA.
Wulfenite: PbMoO4 Class: Molybdate. Type Locality: Bleiberg, Villach (near), Kärnten, Austria.
Wurtzite: (Zn,Fe)S Class: Sulfide. Type Locality: Príbram, Stredocesky kraj, Cechy (Bohemia), Czech Republic (Czechoslovakia).

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Xanthoconite: Ag3AsS3.
Xenotime-(Y): YPO4 Class: Phosphate, Subclass: Anhydrous Phosphate. Type Locality: Lindesnes, Norway.
Xonotlite: Ca6Si6O17(OH)2. Type Locality: Tetela de Xonotla, Mexico.
Yarrowite: Cu9S8. Type Locality: Yarrow Creek, Yarrow Creek -- Spionkop Creek deposit, Alberta (SW), Canada.
Yavapaiite: KFe(SO4)2. Type Locality: United Verde Mine, Jerome, Yavapai Co., Arizona, USA.
Yedlinite: Pb6CrCl6(O,OH)8. Type Locality: Mammoth Mine, Tiger, Pinal Co., Arizona, USA.
Zaratite: Ni3(CO3)(OH)4+4H2O Class: Carbonate, Subclass: Hydroxyl Carbonate. Type Locality: Texas, Lancaster Co., Pennsylvania, USA*.
Zeolite: Group name.
Zinc: Zn Class: Native Element, Subclass: Metals.
Zincite: (Zn,Mn)O Class: Oxide. Type Locality: Sterling Hill and Franklin Furnace, Sussex Co., New Jersey, USA.
Zinkenite: Pb9Sb22S42 Class: Sulfosalt. Type Locality: Wolfsberg, Harz, Germany*.
Zinnwaldite: KLiFeAl(AlSi3)O10(F,OH)2 (Mica) Class: Silicate, Subclass: Phyllosilicate. Type Locality: Cínovec (Zinnwald), Krusné Hory (Erzgebirge), Cechy (Bohemia), Czech Republic (Czechoslovakia).
Zippeite: K4(UO2)6(SO4)3(OH)10+4H2O Class: Sulfate. Type Locality: Jáchymov (St. Joachimsthal), Západocesky kraj, Cechy (Bohemia), Czech Republic (Czechoslovakia)*.
Zircon: ZrSiO4 Class: Silicate, Subclass: Nesosilicate.
Zoisite: Ca2Al3(SiO4)3(OH) (Epidote) Class: Silicate, Subclass: Sorosilicate. Type Locality: Saualpe, Kärnten (Carinthia), Austria.
Zunyite: Al13Si5O20(OH,F)18Cl. Type Locality: Zuni Mine, Anvil Mt., Silverton, San Juan Co., Colorado, USA.
* = Locality verified in Dana's System of Mineralogy.

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Minerals For Sale

The information was gathered from many references and it is likely there are some errors. Mineral names are always being discredited, middle members of series are being eliominated, new mineral are being named. This is the best available information at this time. However, researchers are advised to verify any iformation found on this page.


 

   

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