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Centennialite

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GFM1044614

Centennialite

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Description Tabs

Description
Locality: 
Rudna Mine, Gmina Polkowice, Polkowice County, Lower Silesian Voivodeship, Poland
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.8 × 2 cm
Description

The Copper-Hydroxyl-Chloride forms dark blue crystal aggregates of about 2 mm in addition to pale greenish blue Calumetite and brown Goethite, on a crystal groups of colorless Halite crystals.

Mineral Data
What's on the rock

Centennialite

Formula: 
CaCu3Cl2(OH)6·nH2O (n ~ 0.7)
Hardness: 
0.0
Type Locality: 
Centennial Mine, Centennial, Houghton Co., Michigan, USA