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Arsenopyrite With Fluorite & Muscovite

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PJM46850

Arsenopyrite With Fluorite & Muscovite

Description Tabs

Description
Locality: 
Yaogangxian Mine, Hunan Province, China (Peoples Republic)
Size Range: 
Small cabinet (7-10 cm)
Size: 
3.7 × 7.1 × 5 cm
Description

A group of bright metallic silver arsenopyrite crystals, many showing a high degree of twinning, including some with distincy cogwhell edges on a silky off white matrix of muscovite and purple fluorite cubes

Mineral Data
What's on the rock

Arsenopyrite

Formula: 
FeAsS
Strunz: 
2.EB.20
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Streak: 
White
Earthstones Australia

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