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Umangite & Tangeite

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CLB133666

Umangite & Tangeite

Rare Mineral

Description Tabs

Description
Locality: 
Paradox Valley, Uravan, Montrose County, Colorado, United States of America
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 2 × 1.6 cm
Description

Two very rare minerals. Mindat doesn't list them together at one locality in the Paradox Valley, but the whole area doesn't seem to be well defined.

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

Tangeite

Formula: 
CaCu(VO4)(OH)
Strunz: 
8.BH.35
Crystal System: 
Orthorhombic
Hardness: 
3.5
Type Locality: 
Glavnaya vein, Tyuya-Muyun Cu-V-U Deposit (Radium Mine), Alai Range (Alay Range), Osh Oblast, Kyrgyzstan

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