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Chalcomenite & Olsacherite

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CR77404

Chalcomenite & Olsacherite

Rare Mineral

Description Tabs

Description
Locality: 
El Dragón Mine, Quijarro Province, Potosi Department, Bolivia
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 2.7 × 2.9 cm
Description

Deep blue and sparkling chalcomenite crystals on krutaite ore matrix with yellow fibrous olsacherite crystals.

Very rich and good specimen of two very rare selenium minerals.

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

Olsacherite

Formula: 
Pb2(SeO4)(SO4)
Strunz: 
7.AD.35
Hardness: 
3.0 - 3.5
Type Locality: 
Virgen de Surumi mine (Pacajake mine; Pakajake mine), Pakajake Canyon (Pacajake Canyon), Chayanta Province, Potosí Department, Bolivia