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Native Selenium & Fluorwavellite

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UVM854188

Native Selenium & Fluorwavellite

Description Tabs

Description
Locality: 
Willard Mine, Pershing County, Nevada, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.4 × 3.4 × 2.3 cm
Description

Dark colored needles of native selenium perhed on acicular colorless crystals of fluorwavellite.  A great combination specimen that shows off both species wonderfully.

Mineral Data
What's on the rock

Selenium

Formula: 
Se
Strunz: 
1.CC.10
Crystal System: 
Trigonal
Hardness: 
2.0
Streak: 
red

Fluorwavellite

Formula: 
Al3(PO4)2(OH)2F·5H2O
Strunz: 
8.DC.50
Crystal System: 
Orthorhombic
Hardness: 
3½ - 4
Colour: 
Green to yellowish-green and yellow
Streak: 
White
Type Locality: 
Silver Coin Mine, Valmy, Iron Point District, Humboldt Co., Nevada, USA Or Wood Mine, Del Rio, Del Rio District, Cocke Co., Tennessee, USA

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