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Voltaite & Coquimbite

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SKY207100

Voltaite & Coquimbite

Classic locality
Rare Mineral

Description Tabs

Description
Locality: 
Atalaya Open Pit, Rio Tinto, Huelva, Andalusia, Spain
Size Range: 
Micromount (under 1cm)
Size: 
0.6 × 0.5 × 0.5 cm
Description

Aesthetic specimen of octahedric black voltaite crystals associated to orange coquimbite crystals in a colorful combination very nice under the microscope! From a classic locality in Spain for voltaite.

Mineral Data
What's on the rock

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

Seller Information

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