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Calumetite & Copper

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Calumetite & Copper

Description Tabs

Description
Locality: 
Centennial Mine, Centennial, Houghton County, Michigan, United States of America
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
2.5 × 6 × 4.5 cm
Description

Blue calumetite on native copper

Mineral Data
What's on the rock

Calumetite

Formula: 
Cu(OH,Cl)2·2H2O
Strunz: 
3.DA.40
Hardness: 
2.0
Type Locality: 
Centennial Mine, Centennial, Houghton Co., Michigan, USA

Copper

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