Superb group of very sharp, twinned Native Copper crystals from the famous Central mine in Michigan’s Keweenaw Peninsula. The perfection of the copper crystals (showing a combination of cubic and tetrahexahedral forms) and their stacked, branching arrangement make this an exceptional Michigan copper. From the noted collections of the A.E. Seaman Museum (with label) and the collection of Martin Zinn III. Classic!!
Original price was: $3,800.00.$3,000.00Current price is: $3,000.00.
In stock
Species: Cuprite, Native Copper
Locality: Rubtsovsk Mine, Rubtsovsky District, Altai Krai, Russia
Size: 22 x 11 x 7 cm
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Species: Native Copper
Locality: Central Mine, Central, Houghton Township, Keweenaw County, Michigan, USA
Size: 8 x 3.4 x 1.6 cm
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Species: Baryte, Native Copper
Locality: South Kearsarge Mine, Kearsarge, Calumet Township, Houghton County, Michigan, USA
Size: 10 x 3.4 x 1 cm
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Species: Cuprite, Native Copper, Tenorite
Locality: Phoenix Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA
Size: 11 x 4.5 x 1.7 cm
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