Minerals from Michigan

Copper in Calcite from Keweenaw Peninsula Copper District, Michigan

Copper in Calcite from Quincy Mine, Hancock, Keweenaw Peninsula Copper District, Houghton County, Michigan

Copper in Calcite from Calumet, Michigan

Copper in Calcite from Calumet, Michigan

Copper in Calcite on Prehnite from Houghton County, Michigan

Copper in Conglomerate from Calumet & Hecla Mine, Keweenaw Peninsula, Houghton County, Michigan

Copper in conglomerate from Kingston Conglomerate, Keweenaw Peninsula Copper District, Michigan

Copper in conglomerate from Calumet and Hecla Mine, Houghton County, Keweenaw Peninsula Copper District, Michigan

Copper in Datolite from Caledonia Mine, Keweenaw Peninsula Copper District, Ontonagon County, Michigan

Copper in matrix from White Pine Mine, Ontonagon County, Michigan

Copper in Quartz from Keweenaw Peninsula Copper District, Michigan

Copper in Quartz with Epidote from Ahmeek Mine, Keweenaw Peninsula Copper District, Keweenaw County, Michigan

Copper in Shale from White Pine Mine, Ontonagon County, Michigan

Copper in Shale from White Pine Mine, Ontonagon County, Michigan

Copper in Shale from White Pine Mine, Ontonagon County, Michigan

Copper in shale from White Pine Mine, Ontonagon County, Michigan

Copper in shale from White Pine Mine, Keweenaw Peninsula Copper District, Ontonagon County, Michigan

Copper inclusions in Calcite from Keweenaw Peninsula, Lake Superior, Michigan

Copper inclusions in Calcite from Quincy Mine, Hancock, Keweenaw Peninsula Copper District, Houghton County, Michigan

Copper inclusions in Calcite from Keweenaw Peninsula Copper District, Michigan

Copper on Calcite from Keweenaw Peninsula, Lake Superior, Michigan

Copper on Prehnite from Keweenaw Peninsula, Michigan

Copper on Prehnite from Iroquois Mine, 3.5 km northeast of Ahmeek, Keweenaw County, Michigan

Copper on Prehnite from Keweenaw Peninsula, Lake Superior, Michigan

Copper on Prehnite from Osceola Mine, Keweenaw Peninsula Copper District, Houghton County, Michigan

Copper on Prehnite from Iroquois Mine, 3.5 km northeast of Ahmeek, Keweenaw County, Michigan

Copper on Prehnite from Osceola Mine, Keweenaw Peninsula Copper District, Houghton County, Michigan

Copper on Prehnite from Iroquois Mine, 3.5 km northeast of Ahmeek, Keweenaw County, Michigan

Copper on Pumpellyite from Atlantic Mine, Houghton, Michigan

Copper or Bronze Hammer from Keweenaw Peninsula Copper District, Keweenaw County, Michigan

Copper var. Copper Skull from Keweenaw Peninsula, Michigan

Copper var. Herringbone from Keweenaw Peninsula Copper District, Michigan

Copper var. Leaf Copper from Keweenaw Peninsula Copper District, Michigan

Copper var. Shot Copper from Keweenaw Peninsula Copper District, Michigan

Copper var. Shot Copper from Keweenaw Peninsula Copper District, Michigan

Copper var. Skull from Centennial Mine, Calumet, Houghton County, Keweenaw Peninsula Copper District, Michigan

Copper var. Spinel-law Twin Crystals from Keweenaw Peninsula Copper District, Michigan

Copper var. Whitneyite from Superior Mine, Keweenaw Peninsula, Michigan

Copper var. Whitneyite from Seneca Mine, Keweenaw Peninsula, Michigan

Copper with Calcite from Keweenaw Peninsula Copper District, Michigan

Copper with Calcite, Stilbite and Epidote from Keweenaw Peninsula Copper District, Michigan

Copper with Epidote from Keweenaw Peninsula Copper District, Michigan

Copper with Epidote from Keweenaw Peninsula Copper District, Michigan

Copper with Epidote from Keweenaw Peninsula Copper District, Michigan

Copper with Malachite from Keweenaw Peninsula Copper District, Michigan

Copper with Malachite from Keweenaw Peninsula Copper District, Michigan

Copper with Silver from South Kearsarge Mine, Houghton County, Keweenaw Peninsula Copper District, Michigan

Copper, Calcite from Houghton County, Michigan

Copper, Calcite, Analcime, Albite, Quartz from Keweenaw Peninsula Copper District, Michigan

Copper, Calcite, Apophyllite from Cliff Mine, Eagle River, Michigan

Copper, Calcite, Epidote from Tamarack Mine, Keweenaw Peninsula Copper District, Houghton County, Michigan

Copper, crystallized from Keweenaw Peninsula, Michigan

Copper, Datolite, Epidote, Chalcocite from Osceola Mine, Keweenaw Peninsula Copper District, Houghton County, Michigan

Copper, float from Copper Falls, Keweenaw Peninsula, Michigan

Copper, Orthoclase, Calcite from Central Mine, Keweenaw Peninsula, Michigan

Copper, Prehnite, Calcite from Keweenaw Peninsula Copper District, Michigan

Copper, Quartz, Epidote from Keweenaw Peninsula Copper District, Michigan

Copper, Silver and Calcite from Quincy Mine, Hancock, Keweenaw Peninsula Copper District, Houghton County, Michigan

Copper, Silver, Datolite from Central Mine, Keweenaw Peninsula Copper District, Michigan

Corallite Fossils (Devonian) from Petoskey, Emmet County, Michigan

Datolite from Lake Superior Copper Distric, Keweenaw Peninsula, Michigan

Datolite from Keweenaw Peninsula Copper District, Michigan

Datolite from Keweenaw Peninsula Copper District, Michigan

Datolite from Keweenaw Peninsula Copper District, Michigan

Datolite from Keweenaw Peninsula Copper District, Michigan

Datolite from Mass Mine, Ontonagon County, Michigan

Datolite nodule from Centennial Mine, Calumet, Houghton County, Michigan

Datolite nodule from Keweenaw Peninsula Copper District, Michigan

Datolite nodule from Keweenaw Peninsula Copper District, Michigan

Datolite nodule with Hematite and Copper inclusions (cabochon) from Keweenaw Peninsula Copper District, Michigan

Datolite nodule with Hematite and Copper inclusions (cabochon) from Keweenaw Peninsula Copper District, Michigan

Datolite nodule with Hematite and Copper inclusions (cabochon) from Keweenaw Peninsula Copper District, Michigan

Datolite nodules with Hematite and Copper inclusions from Keweenaw Peninsula Copper District, Michigan

Datolite nodules with Hematite and Copper inclusions (plus 3 cabochons) from Keweenaw Peninsula Copper District, Michigan

Datolite on Copper from Keweenaw Peninsula Copper District, Michigan

Datolite with Hematite and Copper inclusions from Mass Mine, Keweenaw Peninsula Copper District, Ontonagon County, Michigan

Datolite with Hematite and Copper inclusions from Quincy Mine, Hancock, Keweenaw Peninsula Copper District, Houghton County, Michigan

Datolite with Native Copper from Calumet, Michigan

Domeykite from Houghton, Keweenaw Peninsula, Michigan

Domeykite var. Mohawkite from Mohawk Mine, Keweenaw Peninsula Copper District, Michigan

Domeykite var. Stibiodomeykite from Mohawk Mine, Keweenaw Peninsula Copper District, Keweenaw County, Michigan

Epidote from Gratoit Mine, Mohawk, Michigan

Epidote from Centennial Mine, Keweenaw Peninsula Copper District, Houghton County, Michigan

Epidote on Prehnite from Osceola Mine, Keweenaw Peninsula Copper District, Houghton County, Michigan

Goethite from Keweenaw Peninsula, Lake Superior, Michigan

Goethite from Ishpeming, Marquette County, Michigan

Goethite from Ishpeming, Marquette County, Michigan

Goethite from Marquette Iron Range, Marquette County, Michigan

Goethite from Ishpeming, Marquette County, Michigan

Goethite from Negaunee Iron Mining District, Marquette County, Michigan

Goethite from Lucy Mine, Negaunee District, Marquette County, Michigan

Goethite from Negaunee Iron Mining District, Marquette County, Michigan

Goethite from Sellwood Mine, Ishpeming, Marquette County, Michigan

Goethite from Iron River District, Iron County, Michigan

Goethite from Ishpeming District, Marquette County, Michigan

Goethite and Hematite from Negaunee Iron District, Marquette County, Michigan

Goethite and Hematite on Calcite from Cliff Mine, Ishpeming, Marquette County, Michigan

Goethite var. Needle Ore from Richmond Mine, Palmer, Marquette County, Michigan

Goethite-Hematite from Ishpeming, Marquette County, Michigan

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Mystery Wind Mine (Eagle's Nest Mine), Michigan Bluff District, Placer County, California

Gold from Mystery Wind Mine (Eagle's Nest Mine), Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Michigan Bluff Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold (crystallized leaf) from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold (dendritic crystals) from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold (native gold) in Quartz from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold (native gold) in Quartz from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold (native gold) in Quartz from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold (native gold) with Arsenopyrite in Quartz from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold (naturally crystallized native gold) with minor Quartz from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold (naturally crystallized native gold) with minor Quartz from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold in Quartz (naturally crystallized native gold) from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold in Quartz (naturally crystallized native gold) from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gold on Quartz from Eagle's Nest Mine, Michigan Bluff District, Placer County, California

Gruenerite in Magnetite from Michigamme Mine, Marquette County, Michigan

Gypsum var. Selenite from Bristol Mine, Crystal Falls, Iron County, Michigan

Gypsum var. Selenite from Grand Rapids, Kent County, Michigan

Gypsum var. Selenite from Grand Rapids, Kent County, Michigan

Halite from Detroit, Michigan

Hematite from Isabella Mine, Palmer, Marquette County, Michigan

Hematite from Ishpeming, Marquette County, Michigan

Hematite from Ishpeming, Marquette County, Michigan

Hematite from Newport Mine, Ironwood District, Gogebic County, Michigan

Hematite from Ishpeming, Marquette County, Michigan

Hematite from Iron Mining District, Marquette and Iron Counties, Michigan

Hematite from Ishpeming, Marquette County, Michigan

Hematite and Quartz from Isabella Mine, Palmer, Marquette County, Michigan

Hematite on Quartz from Republic Mine, Marquette County, Michigan

Hematite var. Grape Ore from Superior Mine, Marquette, Michigan

Hematite var. Specular from Humboldt Mine, Marquette County, Michigan

Hematite var. Velvet Kidney Ore from Lucy Mine, Negaunee, Marquette County, Michigan