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Silver & Copper

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MGR801655

Silver & Copper

Classic Locality

Description Tabs

Description
Locality: 
Lake Superior, Keweenaw County, Michigan, United States of America
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
11.6 × 7.5 × 5.8 cm
Description

One of the really famous US classics - a rare combination of native, well developed silver on native copper. Both minerals with attarctive patina, both minerals well formed and the whole specimen developed as floater - remarkable dimension, rich of silver, very showy in various positions. It is not just a plate; it is very massive, heavy (nearly 0,6kg) and tri-dimensional. Undamaged.

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