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Molybdomenite Chalcomenite Umangite

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SMM585683

Molybdomenite Chalcomenite Umangite

Rare Mineral

Description Tabs

Description
Locality: 
Hal Lake Selenium Occurence #1, Beaverlodge Lake, Saskatchewan, Canada
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 1.5 × 1 cm
Description

Nice blue crystals of chalcomenite, are together with thin, white fibrous crystals of rare molybdomenite,  in the sample there is also a metallic fragment of umangite.

Boxed with Label
Mineral Data
What's on the rock

Molybdomenite

Formula: 
PbSeO3
Strunz: 
4.JF.05
Crystal System: 
Monoclinic
Hardness: 
3.5
Colour: 
White
Type Locality: 
Cacheuta Mine, Cerro de Cacheuta, Sierra de Cacheuta, Mendoza, Argentina

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

Umangite

Formula: 
Cu3Se2
Strunz: 
2.BA.25
Crystal System: 
Tetragonal
Hardness: 
3.0
Streak: 
Black
Type Locality: 
Trogtal Quarries, Lautenthal, Harz, Lower Saxony, Germany

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