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Native Silver & Copper

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Native Silver & Copper

Description Tabs

Description
Locality: 
Calumet & Hecla Mine, Calumet, Houghton County, Michigan, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 1.3 × 0.6 cm
Description

Native Silver and copper "half breed" nugget from Calumet. Comes with a label. 

Mineral Data
What's on the rock

Silver

Formula: 
Ag
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0

Copper

Formula: 
Cu
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0