Name

Chalcopyrite on dolomite

Chalcopyrite cast after galena

Origin: Milliken (Sweetwater) mine, Viburnum Trend, Reynolds Co., Missouri

Sample size: 10 x 7 x 5 cm (top), 4.5 x 5.5 x 2.5 cm (bottom)

Chalcopyrite on calcite with hematite

Origin: Pea Ridge mine, Washington Co., Missouri

Sample size: 5.5 x 3 x 2.2 cm

Chalcopyrite with galena

Origin: Milliken (Sweetwater) mine, Viburnum Trend, Reynolds Co., Missouri, U.S.A.

Sample size: 20 x 13 x 5.5 cm

Chalcopyrite with calcite (left)

Origin: Dzhezkazgan, Kazakhstan

Sample size: 14 x 12 x 22 mm (left), 19 mm in length (right)

Chalcopyrite with pyrite on quartz

Origin: Huaron mine, Cerro de Pasco, Pasco Department, Peru

Sample size: 33 x 22 x 17 mm

Chalcopyrite with galena

Origin: Huanzala, Peru

Ex. Willard Perkin collection

Sample size: 30 x 17 x 19 mm

Scattered about the mica crystals covering the matrix are bright brassy crystals of chalcopyrite to over 1 cm in size, a cluster of metallic stannite crystals measuring 15 mm across, and minor arsenopyrite crystals. There is a twinned lustrous black cassiterite crystal measuring 18 mm in size present, as well as a gemmy green cuboctahedral fluorite crystal which measures 24 mm across.

Origin: Yaogangxian Mine, Chenzhou, Chenzhou area, Hunan, Central South Region, China

Sample size: 8 x 5.5 x 4.3 cm