Copper with calcite, Michigan
description: 2 1/4" across LOCALITY: Quincy Mine, near Hancock, Houghton County, Keweenaw Peninsula, Michigan The Quincy Mine is one of the few places in the world to produce high quality display specimens of calcite with native copper. A few other localities where this highly desirable mineral combination occurred included the Onganja Mine, Emke Farm, Namibia; Bufa Mine, La Bufa, Mun. de Batopilas, Chihuahua, Mexico and The Czar Mine, Bisbee, Cochise County, Arizona. The calcite crystals on this piece are lustrous and transparent with some veils and inclusions. The vertices and edges of the calcite crystals are generally in good condition. One face at the back of one of the calcite crystals is a cleavage face. This is not evident in the photo.
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