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Römerite & Voltaite

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RBM104775

Römerite & Voltaite

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Description
Locality: 
Alcaparrosa Mine, Cerritos Bayos, El Loa Province, Antofagasta Region, Chile
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3 × 2.6 cm
Description

Brown römerite accompanied by dark voltaite on matrix.

Mineral Data
What's on the rock

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

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

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