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Copper (crystallized) from Houghton County, Keweenaw Peninsula Copper District, Michigan

 
Copper (crystallized) from Houghton County, Keweenaw Peninsula Copper District, Michigan

Copper (crystallized) from Houghton County, Keweenaw Peninsula Copper District, Michigan

Copper (crystallized) from Houghton County, Keweenaw Peninsula Copper District, Michigan

DESCRIPTION:No. 32089
Mineral:Copper (crystallized)
Locality:Houghton County, Keweenaw Peninsula Copper District, Michigan
Description:Fine specimen of crystallized native copper in branching, arborescent cluster. No matrix attached. The crystals are blocky shapes with slightly rounded edges. Many crystals show Spinel-law twinning. University of Minnesota Department of Geology and Geophysics; ex. Wendell Wilson #128 (publisher and editor of Mineralogical Record); ex. W. Borden
Overall Size:4.5x3x2 cm
Crystals:1-3.5 mm
Status: For reference only
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