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Cassiterite Chalcopyrite & Pyrrhotite

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ESM579381

Cassiterite Chalcopyrite & Pyrrhotite

Description Tabs

Description
Locality: 
Panasqueira Mines, Covilhã, Castelo Branco District, Portugal
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.2 × 4.7 × 3 cm
Description

Lustrous dark brown cassiterite crystals with internal reflexes and minor chalcopyrite and pyrrhotite

Mineral Data
What's on the rock

Cassiterite

Formula: 
SnO2
Strunz: 
4.DB.05
Crystal System: 
Tetragonal
Hardness: 
6.0 - 7.0

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0

Pyrrhotite

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