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Tungstenite & Phlogopite

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SER913774

Tungstenite & Phlogopite

Description Tabs

Description
Locality: 
Crevoladossola Quarry, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 3.1 × 2.1 cm
Description

an hexagonal tungstenite crystal on dolomite with bronze phlogopite

Mineral Data
What's on the rock

Tungstenite

Formula: 
WS2
Strunz: 
2.EA.30
Hardness: 
2.5
Colour: 
Lead-gray
Type Locality: 
Emma Mine (Emma tunnel; Alta United Mines Company), Little Cottonwood District (Alta District), Wasatch Mts, Salt Lake Co., Utah, USA

Phlogopite

Formula: 
KMg3(AlSi3O10)(OH,F)2
Strunz: 
9.EC.20
Crystal System: 
Monoclinic - Prismatic
Hardness: 
2.0 - 3.0
Streak: 
White