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Tungstite

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JYJ105212

Tungstite

Description Tabs

Description
Locality: 
San Antonio de Calacalani Mine, Cercado Province, Oruro Department, Bolivia
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 1.7 × 1 cm
Description

A very showy example of intense yellow balls of tungstite, an alteration product of ferberite. As read on mindat, the mine produced about 800 tons of tungstite/hydrotungstite as ore (!) during World War I and is nowadays completely worked out and not even traces of those minerals remain. Comes with an antique label from a german collection.

Mineral Data
What's on the rock

Tungstite

Formula: 
WO3·H2O
Strunz: 
4.FJ.10
Hardness: 
2.5
Type Locality: 
Lane's [Lead and Silver] Mine (Elm Street), Monroe, Fairfield Co., Connecticut, USA...