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Römerite & Coquimbite

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SMM854247

Römerite & Coquimbite

Description Tabs

Description
Locality: 
Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Lucca Province, Tuscany, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2 × 1.5 cm
Largest Crystal: 
0.50cm
Description

Brown reddish, glassy, well shaped and very big for the specie, crystals of römerite show here togeher whit clusters of brilliant purple coquimbite crystals, with a magnificent contrast. White is halotrichite.

The römerite crystals are probably among the largest crystals (0.5 cm) I know of for the species.

Excellent specimen!!

Boxed with Label
Mineral Data
What's on the rock

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

Coquimbite

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

Seller Information

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