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Coquimbite & Copiapite

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PCZ733847

Coquimbite & Copiapite

Rare Mineral

Description Tabs

Description
Locality: 
Alfredo Pit, Rio Tinto Mines, Huelva, Andalusia, Spain
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 3.3 × 2.2 cm
Description

A colourful and interesting specimen of these two rare minerals found on 33 level of this pit in 1990. This material is very difficult to source these days.

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

Copiapite

Formula: 
Fe2+Fe3+4(SO4)6(OH)2·20H2O
Strunz: 
7.DB.35
Hardness: 
2.5 - 3.0
Type Locality: 
Copiapó Province, Atacama Region, Chile
Peter Crozier Minerals