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Voltaite & Szomolnokite

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SCH35510

Voltaite & Szomolnokite

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Description
Locality: 
Rio Tinto Mines, Huelva, Andalusia, Spain
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.5 × 3 × 2 cm
Description

Rich specimen of voltaite crystals covering both sides of the matrix associated with szomolnokite, halotrichite and other rare phases, possibly rhomboclase and copiapite.

Very rich for both, voltaite and szomolnokite!

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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