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Calumetite

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CHP852256

Calumetite

Classic Locality

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Description
Locality: 
Herzog Julius Smelter Slag Locality, Astfeld, Goslar, Lower Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 0.8 × 0.4 cm
Description

specimen with some very good radiating tufts of sky-blue crystals of calumetite on matrix.

c. 2291

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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