Specimens

Gairo, Dodoma Prov., Tanzania

Quartz

Gairo, Dodoma, Tanzania

Merelani Hills, Arusha, Tanzania

Grossular

Mahenge, Morogoro, Tanzania

Spinel

Mahenge, Morogoro, Tanzania

Spinel

Mahenge, Morogoro, Tanzania

Spinel

Mahenge, Morogoro, Tanzania

Spinel

Green's Farm locality, Roxbury, Litchfield Co., Connecticut, USA

Almandine

Casapalca Mine, Huarochiri Province, Lima, Peru

Mindola pit, Rokana Mine, Kitwe, Zambia

Libethenite

Touissit Mine, Morocco

Anglesite

Kunar, Afghanistan

Annabel Lee Mine, Cave-in-Rock, Hardin Co., Illinois, USA

Fluorite, Calcite

Mindouli District, Pool Department, Congo

Dioptase

Mindouli District, Pool Department, Congo

Dioptase

Tsumeb, Namibia

Calcite, Dioptase

Merelani Hills, Arusha, Tanzania

Graphite, Prehnite

Henan Prov., China

Stibnite, Calcite

Minerva Mine, Cave-in-Rock, Hardin Co., Illinois, USA

Galena, Fluorite

St. Anne's Mine, Miami, Karoi District, Zimbabwe

St. Anne's Mine, Miami, Karoi District, Zimbabwe

Yaogangxian Mine, Hunan, China

Fluorite, Quartz

Buckskin Mts, La Paz Co., Arizona, USA

Hematite, Quartz

Tsumeb, Namibia

Calcite, Wulfenite, Dioptase

Tsumeb, Namibia

Dioptase