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Clinochalcomenite Chalcomenite & Mandarinoite On Krut'aite Penroseite

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CLB537764

Clinochalcomenite Chalcomenite & Mandarinoite On Krut'aite Penroseite

Rare Mineral

Description Tabs

Description
Locality: 
El Dragón Mine, Quijarro Province, Potosi Department, Bolivia
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 3 × 2 cm
Description

Several rare selenium minerals as cleft-fillings, crusts and micro-crystals on this sample. Visual IDs - no guarantees! Chalcomenite and clinochalcomenite (blue and blueish green) pretty sure, also gray krut'aite-penrosite. Little botryoidal yellowish mineral probably mandarinoite. Other and more species probable.

Mineral Data
What's on the rock

Clinochalcomenite

Formula: 
CuSeO3 · 2H2O
Strunz: 
4
Crystal System: 
Monoclinic
Hardness: 
2
Colour: 
Bluish green
Streak: 
Pale Green
Type Locality: 
Gansu (Ganzu) Province, China

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

Mandarinoite

Formula: 
Fe3+2(SeO3)3·4H2O
Strunz: 
4.JH.15
Crystal System: 
Monoclinic
Hardness: 
2.5
Type Locality: 
Virgen de Surumi mine (Pacajake mine; Pakajake mine), Pakajake Canyon (Pacajake Canyon), Chayanta Province, Potosí Department, Bolivia

Krut'aite

Formula: 
CuSe2
Strunz: 
2.EB.05a
Hardness: 
4.0
Type Locality: 
Petrovice, Nové Město na Moravě, Vysočina Region, Moravia (Mähren; Maehren), Czech Republic

Penroseite

Formula: 
(Ni,Co,Cu)Se2
Strunz: 
2.EB.05a
Hardness: 
2.5 - 3.0
Type Locality: 
Virgen de Surumi mine (Pacajake mine; Pakajake mine), Pakajake Canyon (Pacajake Canyon), Chayanta Province, Potosí Department, Bolivia

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