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Coquimbite & Voltaite

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CAM153218

Coquimbite & Voltaite

Description Tabs

Description
Locality: 
Atalaya Open Pit, Rio Tinto, Huelva, Andalusia, Spain
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 3.4 × 3.3 cm
Largest Crystal: 
0.40cm
Description

An excellent sample of coquimbite from the Rio Tinto Mines with a very rich coverage of hundreds of well-formed lustrous purple coquimbite crystals up to 4 mm associated with dark green octahedral voltaite crystals on a stable matrix.

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

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
Cartils Minerals

Seller Information

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