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Molybdomenite Chalcomenite & Umangite

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SMM605952

Molybdomenite Chalcomenite & Umangite

Rare Mineral

Description Tabs

Description
Locality: 
Hal Lake Selenium Occurence #1, Beaverlodge Lake, Saskatchewan, Canada
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2 × 1 cm
Description

Many thin white fibrous crystals of rare molybdomenite,  in the sample there are blue chalcomenite and black metallic 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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