Minerals from Rocky Mountain States, USA

Columbite-Tantalite from Salida, Colorado

Colusite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Conichalcite from Gold Hill Mine, Toole County, Utah

Conichalcite from Gold Hill Mine, Toole County, Utah

Conichalcite from (Tintic District), Juab County, Utah

Conichalcite from Gold Hill Mine, Toole County, Utah

Conichalcite and Calcite over Chrysocolla from Gold Hill Mine, Toole County, Utah

Conichalcite on Quartz from Tintic District, Juab County, Utah

Conichalcite over Chrysocolla from Gold Hill Mine, Toole County, Utah

Conichalcite, Calcite, Chrysocolla from Gold Hill Mine, Toole County, Utah

Conichalcite, Calcite, Chrysocolla from Gold Hill Mine, Toole County, Utah

Conichalcite, Quartz, Cuprite from Tintic District, Juab County, Utah

Connellite and Malachite from Centennial Eureka Mine, Tintic District, Juab County, Utah

Connellite, Conichalcite, Quartz from Gold Hill Mine, Toole County, Utah

Connellite, Conichalcite, Quartz from Gold Hill Mine, Toole County, Utah

Copper from Anaconda, Deer Lodge County, Montana

Copper from Anaconda, Deer Lodge County, Montana

Copper and Malachite from Anaconda, Deer Lodge County, Montana

Coquimbite from Dexter No. 7 Mine, San Raphael Swell, Emery County, Utah

Coquimbite from Dexter Mine, Emery County, Utah

Cornwallite var. Erinite from Tintic District, Juab County, Utah

Cornwallite, Azurite, Barite from Mammoth Mine, Tintic District, Juab County, Utah

Corundum from Gallatin County, Montana

Corundum from West Fork of Rock Creek, SSW of Philipsburg, Granite County, Montana

Corundum from Bozeman Corundum Mine, Gallatin County, Montana

Corundum from Bozeman Corundum Mine, Gallatin County, Montana

Corundum from Bozeman Corundum Mine, Gallatin County, Montana

Corundum from Bozeman Corundum Mine, Gallatin County, Montana

Corundum from Spokane Bar, Lewis and Clark County, Montana

Corundum from Spokane Bar, Lewis and Clark County, Montana

Corundum var. Sapphire from Missouri River gravel bar, Lewis and Clark County, Montana

Corundum var. Sapphire from Yogo Gulch Sapphire Mining District, Judith Basin County, Montana

Corundum var. Sapphire from Deer Lodge County, Montana

Corundum var. Sapphire from Salisville, Montana

Corundum var. Sapphire from Missouri River Sapphire Deposits, near Helena, Montana

Corundum var. Sapphire from west fork of Rock Creek, west of Philipsburg, Granite County, Montana

Corundum var. Sapphire from West Fork of Rock Creek, SSW of Philipsburg, Granite County, Montana

Corundum var. Sapphire (0.32 carat gemstone and 1.51 carat rough crystal) from Missouri River gravel bar, Lewis and Clark County, Montana

Corundum var. Sapphire (4.04 carat bi-colored hexagonal crystal) from Missouri River gravel bar, Lewis and Clark County, Montana

Corundum var. Sapphire (rough and 0.08 carat faceted gemstone) from Yogo Gulch Sapphire Mining District, Judith Basin County, Montana

Corundum var. Sapphire-rich Lamproite Dike from Yogo Gulch Sapphire Mine, Judith Basin County, Montana

Corundum var. Star Sapphire from Dillon, Beaverhead County, Montana

Corvusite, Coffinite, Pyrite from Long Park #1 Mine, Uravan District, Montrose County, Colorado

Covellite from Summitville Mine, Summitville, Colorado

Covellite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Anaconda Copper Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Summitville, Rio Grande County, Colorado

Covellite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Reynolds Tunnel, Summitville District, Rio Grande County, Colorado

Covellite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Reynolds Tunnel, Summitville District, Rio Grande County, Colorado

Covellite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from BerkeleyPit, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Leonard Mine, 3800' Level, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite from Butte District, Summit Valley, Silver Bow County, Montana

Covellite and Pyrite from Anaconda Copper Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite and Pyrite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite and Pyrite from Reynolds Tunnel, Summitville District, Rio Grande County, Colorado

Covellite and Pyrite from Reynolds Tunnel, Summitville District, Rio Grande County, Colorado

Covellite and Pyrite from Reynolds Tunnel, Summitville District, Rio Grande County, Colorado

Covellite and Pyrite from Reynolds Tunnel, Summitville District, Rio Grande County, Colorado

Covellite and Pyrite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite interlayered with Chalcopyrite from Summitville District, Rio Grande County, Colorado

Covellite on Quartz and Pyrite from Summitville District, Rio Grande County, Colorado

Covellite with Chalcopyrite from Summitville District, Rio Grande County, Colorado

Covellite with Chalcopyrite from Summitville District, Rio Grande County, Colorado

Covellite with minor Pyrite from Leonard Mine, 3800' Level, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Leonard Mine, 3800' Level, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Leonard Mine, 3600' level, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Leonard Mine, 3600' level, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Leonard Mine, 3600' level, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Leonard Mine, 3600' level, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Leonard Mine, 3600' level, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Reynolds Tunnel, Summitville, Rio Grande County, Colorado

Covellite with Pyrite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Covellite with Pyrite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Crandallite and Wardite from Clay Canyon, Fairfield, Utah County, Utah (Type Locality for Wardite)

Crandallite and Wardite from Clay Canyon, Fairfield, Utah County, Utah (Type Locality for Wardite)

Creedite from Henderson Mine, P87 Drift, 7210' Level, Clear Creek County, Colorado

Creedite from Henderson Mine, Clear Creek County, Colorado

Cuprite with Malachite from Mackay District, Custer County, Idaho

Cyanotrichite from Leadore District, Lemhi County, Idaho

Cyanotrichite with Azurite from Peacock Mine, Leadore, Idaho

Diamond (0.43 carat pale brown elongated crystal) from Kelsey Lake Diamond Mine, Stateline District, Larimer County, Colorado

Diamond (0.44 carat pale brown complex crystal) from Kelsey Lake Diamond Mine, Stateline District, Larimer County, Colorado

Diamond (0.75 carat pale pink-brown complex crystal) from Kelsey Lake Diamond Mine, Stateline District, Larimer County, Colorado

Diamond (macle, twinned crystal) from Kelsey Lake Diamond Mine, Stateline District, Larimer County, Colorado

Dickite from National Belle Mine, Red Mountain Pass, Ouray County, Colorado

Dickthomssenite from Vanadium Queen Mine, San Juan County, Utah

Digenite from Eagle Mine, Gilman, eagle County, Colorado

Digenite and Pyrite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Dolomite from Sherman Tunnel, Leadville District, Lake County, Colorado

Dolomite and Pyrite from Day Mine, east of Leadville, Upper Iowa Gulch, Lake County, Colorado

Duftite with Gartrellite on Quartz from Centennial Eureka Mine, Tintic District, Juab County, Utah

Durangite from Thomas Range, Juab County, Utah

Durangite from Thomas Range, Juab County, Utah

Durangite with Cassiterite from Thomas Range, Juab County, Utah

Durangite with Hematite from Thomas Range, Juab County, Utah

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Red Mountain, San Juan County, Colorado

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite (with Tennantite?) from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite and Pyrite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite and Pyrite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite and Pyrite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite and Pyrite from Leonard Mine No. 1, Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite and Pyrite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite and Pyrite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite and Quartz from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite on Digenite from Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite on Pyrite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite on Pyrite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite on Pyrite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Enargite on Pyrite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana