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Coquimbite & Halotrichite

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ESM805975

Coquimbite & Halotrichite

Description Tabs

Description
Locality: 
Dexter #7 Mine, Calf Mesa, Emery County, Utah, United States of America
Class: 
Combination
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.5 × 1 cm
Description

Lustrous bright mauve colored crystals with minor white acicular halotrichite crystals

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

Halotrichite

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