Specimens

Merelani Hills, Arusha, Tanzania

Prehnite

Nosy Varika, Vatovavy-Fitovinany Region, Madagascar

Killa Saifullah, Balochistan, Pakistan

Brucite

Volodarsk-Volynskii, Ukraine

Beryl

Keweenaw Peninsula, Michigan, USA

Copper

Pederniera Mine, São José da Safira, Minas Gerais, Brazil

Quartz

Merelani Hills, Arusha, Tanzania

Grossular

Red Embers Mine, Erving, Massachusetts, USA

Graphite

Cobalt, Ontario, Canada

Silver

Kagoro, Kaduna State, Nigeria

Spinel

Minas Gerais, Brazil

Quartz

Australia

Opal

unknown

Diamond

Nosy Varika, Vatovavy-Fitovinany Region, Madagascar

Mahenge, Morogoro, Tanzania

Spinel

Bisbee (?) Congo (?)

Malachite

Brazil

Hunan, China

Fluorite

Majuba Hill Mine, Pershing Co., Nevada, USA

Chrysocolla

Merelani Hills, Arusha, Tanzania

Zoisite, Prehnite

Aydun, Mugula, Turkey

Diaspore

Anosy Region, Tulear Province, Madagascar

Grandidierite

Cobalt, Ontario, Canada

Silver, Safflorite

Medina, Minas Gerais, Brazil

Carson Hill Gold Mine, Calaveras Co., California, USA

Ankerite