Specimens

Petersen Mountain Quartz Mines, Hallelujah Junction area, Washoe County, Nevada, USA

Quartz

Petersen Mountain Quartz Mines, Hallelujah Junction area, Washoe County, Nevada, USA

Quartz

Ladjuar Medam, Sar-e-Sang, Badakhshan, Afghanistan

Phlogopite, Lazurite

Eagle's Nest Mine, Michigan Bluff, Placer County, California, USA

Gold

Milpillas Mine, Cuitaca, Sonora, Mexico

Azurite

San Martin Mine, Chiuruco, Ancash Dept., Peru

Rhodonite

Erongo Mountains, Namibia

Fluorite, Quartz

Touissit, Morocco

Anglesite

Xalostoc, Morelos, Mexico

Grossular, Vesuvianite

Durangite Locality, Thomas Range, Utah, USA

Hematite

Morogoro, Tanzania

Guanajuato, Mexico

Calcite, Quartz

Eagle's Nest Mine, Michigan Bluff, Placer County, California, USA

Gold, Quartz

Butte, Silver Bow Co., Montana, USA

Covellite, Pyrite

Yaogangxian Mine, Hunan, China

Scheelite, Quartz

Mt Xuebaoding, Ping Wu, Sichuan Prov., China

Scheelite

Mt Xuebaoding, Ping Wu, Sichuan Prov., China

Scheelite

Merelani Hills, Arusha, Tanzania

Zoisite

Merelani Hills, Arusha, Tanzania

Zoisite

Merelani Hills, Arusha, Tanzania

Zoisite

N'Chwanning Mine, Kuruman, South Africa

Rhodochrosite

Milpillas Mine, Cuitaca, Sonora, Mexico

Azurite, Brochantite

Orange River, Namibia

Quartz

Morogoro, Tanzania

Milpillas Mine, Cuitaca, Sonora, Mexico

Chalcocite, Azurite