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Callaghanite

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SKY578556

Callaghanite

Rare Mineral

Description Tabs

Description
Locality: 
August Bebel Smelter Slag Locality, Helbra, Mansfeld Basin, Saxony - Anhalt, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1 × 1 cm
Description

Well fomed deep blue-violet crystals of the very rare mineral callaghanite in a contrasting matrix.
Callaghanite has only been found in a few localities worldwide.

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

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