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Chalcopyrite on Quartz from Keweenaw Peninsula Copper District, Michigan

 
Chalcopyrite on Quartz from Keweenaw Peninsula Copper District, Michigan

Chalcopyrite on Quartz from Keweenaw Peninsula Copper District, Michigan

Chalcopyrite on Quartz from Keweenaw Peninsula Copper District, Michigan

DESCRIPTION:No. 28058
Mineral:Chalcopyrite on Quartz
Locality:Keweenaw Peninsula Copper District, Michigan
Description:Double-sided cluster of milky quartz crystals up to 20 mm long with overgrowth of brassy chalcopyrite crystals up to 1 mm and minor native copper on the bottom. Old pen-and-ink label list the locality only as Lake Superior. Ex. A. Lincoln Sherk II, MD. (1896-1970)
Overall Size:9x4x3 cm
Crystals:.5-20 mm
Status: Sold - Posted here for reference only
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