Specimens

Ambasaguas, La Rioja, Spain

Pyrite

Nador, Oriental Region, Morocco

Hematite, Calcite

Viburnum Trend, Reynolds Co., Missouri, USA

Chalcopyrite, Dolomite

Kerkimer Co., New York, USA

Diamond, Quartz

Bingham Canyon Mine, Salt Lake Co., Utah, USA

Pyrite

Cerro Warihuyn, Miraflores, Huanuco, Peru

Boron Open Pit, Boron, Kern Co., California, USA

Calcite, Colemanite

Killa Saifullah Dist., Balochistan, Pakistan

Brucite

Guangdong Prov., China

Pyrite

Kasompe Mine, Katanga, DR Congo

Malachite

Navegadora Mine, Conselheiro Pena, Minas Gerais, Brazil

Spessartine

San Martin Mine, Zacatecas, Mexico

Stibnite

Madagascar

Pyrite

Crystal Peak, Teller Co., Colorado, USA

Goethite, Quartz

Lavra da Ilha, Taquaral, Itinga, Minas Gerais, Brazil

Eosphorite, Quartz

Fengjiashan Mine, Daye Co., Huangshi Pref., Hubei, China

Chalcopyrite, Calcite

Mahenge, Morogoro, Tanzania

Spinel

Mahenge, Morogoro, Tanzania

Spinel

Krushev Dol Mine, Madan, Rhodope Mtns., Bulgaria

Sphalerite

Garnet Ledge, Wrangell Island, Alaska, USA

Almandine

Fowler, St. Lawrence Co., New York, USA

Hematite, Quartz

Wuning Antimony Mine, Wuning Co., Jiujiang, Jiangxi, China

Stibnite

Mindouli District, Pool Department, Congo

Dioptase

Mindouli District, Pool Department, Congo

Dioptase

Mindouli District, Pool Department, Congo

Dioptase