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Callaghanite

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Callaghanite

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Description
Locality: 
Sierra Magnesite Mine, Gabbs, Nye County, Nevada, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 1.7 × 1.3 cm
Description

Dark blue callaghanite from the Sierra Magnesite mine, Gabbs, Nevada, USA. 

Beautiful!

 

Mineral Data
What's on the rock

Callaghanite

Formula: 
Cu2Mg2(CO3)(OH)6·2H2O
Strunz: 
5.DA.25
Crystal System: 
Monoclinic
Hardness: 
3.0 - 3.5
Type Locality: 
Sierra Magnesite Mine (Premier Chemicals Mine; Gabbs Magnesite-Brucite Mine; Basic Refractories Mine; Basic Mine), Gabbs, Gabbs District, Paradise Range, Nye Co., Nevada, USA