Specimens

Prospect Park, New Jersey, USA

Quartz, Heulandite-Ca

Cananea, Sonora, Mexico

Rhodochrosite

Butte, Silver Bow Co., Montana, USA

Bornite

Sterling Hill, Sussex Co., New Jersey, USA

Chalcophanite

Rio Marina, Elba Island, Italy

Pyrite

Rio Marina, Elba Island, Italy

Pyrite

Rio Marina, Elba Island, Italy

Pyrite

Rio Marina, Elba Island, Italy

Pyrite

Rio Marina, Elba Island, Italy

Hematite

Altar, Sonora, Mexico

Stibnite, Stibiconite

Minas Gerais, Brazil

Hematite

Gem Mine, San Benito Co., California, USA

Natrolite

Mashamba West Mine, Katanga, Congo

Arsenopyrite, Calcite

Mashamba West Mine, Katanga, Congo

Arsenopyrite, Calcite

Rainbow Mine (Rowley Mine), Theba, Maricopa Co., Arizona, USA

Caledonite

USA

Copper

Elura Mine, Cobar, Robinson Co., New South Wales, Australia

Silver

Elura Mine, Cobar, Robinson Co., New South Wales, Australia

Silver

Panasquiera, Portugal

Merelani Hills, Arusha, Tanzania

Graphite, Prehnite

San Genaro, Huancavelica, Peru

Silver

Ouray, Colorado, USA

Gold

Yellow Cat Mine, San Benito Co., California, USA

Andradite

110 Level, Gold Hill Mine, Tooele Co., Utah, USA

Scorodite

Frontier near Angola border, Congo (DRC)

Diamond