Excellent group of sharp, well-formed copper crystals with a perfect patina showing well-developed tetrahexahedral form, from the famous Central mine in northern Michigan’s Keweenaw Peninsula. Comes with a custom acrylic display base. Mark Cross photo. Classic!!
$2,500.00
In stock
Species: Native Copper
Locality: Quincy Mine, Quincy Township, Houghton County, Michigan, USA
Size: 25 x 17 x 5.5 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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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: 5.3 x 4.5 x 2.8 cm
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