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Copper

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TBM808718

Copper

Classic Locality

Description Tabs

Description
Locality: 
Caledonia Mine, Mass City, Ontonagon County, Michigan, United States of America
Class: 
Massive/Crystalline
Size Range: 
Museum (18cm plus)
Size: 
19.5 × 13 × 0.2 cm
Weight: 
99.00gr
Description

Top quality sample of Michigan copper with a  lamina formed by dendritic growth inside the cracks of the encasing rock. Some crystallized endings of the dendrite can be seen in some places.

Mineral Data
What's on the rock

Copper

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