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Chalcomenite

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GFM1037877

Chalcomenite

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Description
Locality: 
Hal Lake Selenium Occurence #1, Beaverlodge Lake, Saskatchewan, Canada
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 1.2 × 0.5 cm
Description

 The Copper Selenite forms bright sky-blue crystals up to 2 mm, very rich as 2 cm large crystal aggregates on fracture zones in Rhyolite matrix. Very nice specimens from a new find.

Mineral Data
What's on the rock

Chalcomenite

Formula: 
CuSeO3·2H2O
Strunz: 
4.JH.05
Crystal System: 
Orthorhombic
Hardness: 
2.0 - 2.5
Type Locality: 
Cerro de Cacheuta, Sierra de Cacheuta, Mendoza, Argentina