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Pyroaurite

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SMM621377

Pyroaurite

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Description
Locality: 
Sant'Agostino, Coli, Trebbia Valley, Piacenza Province, Emilia-Romagna, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.5 × 1.5 cm
Description

Flattened golden-orange radial groups of pyroaurite crystals, on a dark  matrix. 

Boxed with Label
Mineral Data
What's on the rock

Pyroaurite

Formula: 
Mg6Fe3+2(OH)16[CO3]·4H2O
Strunz: 
5.DA.50
Crystal System: 
Hexagonal
Hardness: 
2.5
Type Locality: 
Långban, Filipstad, Värmland, Sweden

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