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Pyrrhotite & Pyrite

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TBM1097791

Pyrrhotite & Pyrite

Classic Locality

Description Tabs

Description
Locality: 
Falcacci Stope, Rio Mine, Rio Marina, Elba, Livorno Province, Tuscany, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.5 × 6 × 2.5 cm
Largest Crystal: 
1.50cm
Weight: 
48.00gr
Description

Exceptional find for this famous locality of a cluster of Pyrrhotine crystals up to 15 mm associated with Pyrite crystals up to 9 mm all covered by a small patina of brown Goethite

Mineral Data
What's on the rock

Pyrrhotite

Formula: 
Fe1-xS (x = 0 to 0.17)
Strunz: 
2.CC.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5