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Voltaite With Szomolnokite

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SCH167125

Voltaite With Szomolnokite

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Description
Locality: 
Rio Tinto Mines, Huelva, Andalusia, Spain
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 1.1 × 1.2 cm
Description

A wonderful cluster of several black voltaite crystals with altered szomolnokite. Quite large crystals!

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

Szomolnokite

Formula: 
FeSO4·H2O
Strunz: 
7.CB.05
Hardness: 
2.5
Type Locality: 
Smolník (Schmöllnitz; Szomolnok), Gelnica Co., Košice Region, Slovakia
schani

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