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Kornelite Voltaite Coquimbite Römerite & Copiapite

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SCH55629

Kornelite Voltaite Coquimbite Römerite & Copiapite

Description Tabs

Description
Locality: 
Rio Tinto Mines, Huelva, Andalusia, Spain
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.4 × 3.4 × 3.7 cm
Description

Pure kornelite tufts of acicular crystals scattered over a massive with lots to see like excellent römerite crystals, well-formed voltaite clusters plus good crystal groups pf deep purple coquimbite.

Copiapite is present as accenting yellow spots. The kornelite is highly unusual as being pure white instead of the most usual purple initial growth due to the coquimbite.

Showy specimen!

Mineral Data
What's on the rock

Kornelite

Formula: 
Fe2(SO4)3·7H2O
Strunz: 
7.CB.60
Hardness: 
0.0
Type Locality: 
Smolník (Schmöllnitz; Szomolnok), Gelnica Co., Košice Region, Slovakia

Voltaite

Formula: 
K2Fe2+5Fe3+3Al(SO4)12·18H2O
Strunz: 
7.CC.25
Hardness: 
3.0 - 3.5
Type Locality: 
Solfatara di Pozzuoli, Pozzuoli, Phlegrean Fields, Naples Province, Phlegrean Volcanic Complex, Campania, Italy

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

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
schani
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