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Umangite

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MCH503684

Umangite

Type Locality

Description Tabs

Description
Locality: 
Sierra de Cacho, General Lamadrid Department, La Rioja, Argentina
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.6 × 2.1 cm
Description

Dark grey coloured umangite is richly gusset-filling between white cerussite crystals. There might also be chalcomenite (turquoise coloured) and some other rare selenides. Very good specimen for this very rare mineral.

Mineral Data
What's on the rock

Umangite

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

Seller Information

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