AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Michigan > Copper

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Online Mineral Museum Archive of Mineral Photographs and Mineral Descriptions from John Betts - 
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Copper from Hecla Mine, Calumet, Keweenaw Peninsula Copper District, Houghton County, Michigan

 
Copper from Hecla Mine, Calumet, Keweenaw Peninsula Copper District, Houghton County, Michigan

Copper from Hecla Mine, Calumet, Keweenaw Peninsula Copper District, Houghton County, Michigan

DESCRIPTION:No. 45311
Mineral:Copper
Locality:Hecla Mine, Calumet, Keweenaw Peninsula Copper District, Houghton County, Michigan
Description:Crystallized mass of native copper with bright patina that resembles silver. But specific gravity tests confirm it is copper. The copper is in sharp crystals with both blocky and elongated habit.
Overall Size:23x15x3 mm
Crystals:0.5-3.5 mm
Archived: For reference only

 

 

 

 

 

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