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Calumetite

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HCH149116

Calumetite

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Description
Locality: 
Calumet Township, Houghton County, Michigan, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.5 × 1 cm
Description

Aggregates of Calumetite with native Copper and Prehnite.

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

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