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Coquimbite Goldichite & Halotrichite

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SER1141860

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Description
Locality: 
Javier Mine, Huac-huas, Lucanas Province, Ayacucho Department, Peru
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.5 × 2.1 cm
Description

purple coquimbite crystals hosting white goldichite and needles of halotrichite

Mineral Data
What's on the rock

Coquimbite

Formula: 
Fe2-xAlx(SO4)3·9H2O, x ~0.5
Strunz: 
7.CB.55
Hardness: 
2.5
Streak: 
white
Type Locality: 
Coquimbo Region, Chile

Goldichite

Formula: 
KFe(SO4)2·4H2O
Strunz: 
7.CC.40
Hardness: 
2.5 - 0.0
Streak: 
White
Type Locality: 
Dexter No. 7 Mine, Calf Mesa, San Rafael District (San Rafael Swell), Emery Co., Utah, USA

Halotrichite

Formula: 
FeAl2(SO4)4·22H2O
Strunz: 
7.CB.85
Hardness: 
1.5 - 2.0
Streak: 
White

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Start 24 Feb 18:00
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