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Coquimbite & Römerite

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RBM873220

Coquimbite & Römerite

Description Tabs

Description
Locality: 
Alcaparrosa Mine, Cerritos Bayos, El Loa Province, Antofagasta Region, Chile
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 5 × 3 cm
Description

Very nice combination of sulfates, group of prismatic violet crystals of coquimbite accompanied by romerite, parabutlerite and krausite.

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

Römerite

Formula: 
Fe2+Fe3+2(SO4)4·14H2O
Strunz: 
7.CB.75
Hardness: 
3.0 - 3.5
Type Locality: 
Rammelsberg Mine, Rammelsberg, Goslar, Harz, Lower Saxony, Germany

Seller Information

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