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Römerite & Coquimbite

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GMN687372

Römerite & Coquimbite

New Discovery

Description Tabs

Description
Locality: 
Szent Imre Mine, Mátraszentimre, Mátra Mountains, Heves County, Hungary
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 4 × 4 cm
Description

Nice flesh coloured-brown balls (up to 1 cm) of tabular crystals, and purple aggregates of tabular coquimbite crystals.

Very unique, rare big specimen. One of the best from this find.

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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