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Cassiterite & Arsenopyrite

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CR1086078

Cassiterite & Arsenopyrite

Classic Locality

Description Tabs

Description
Locality: 
Panasqueira Mines, Covilhã, Castelo Branco District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 7 × 4.3 cm
Description

Beautiful specimen of lustrous dark brown cassiterie on arsenopyrite crystals matrix.

Cassiterite is not very common at the locality.

Mineral Data
What's on the rock

Cassiterite

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

Arsenopyrite

Formula: 
FeAsS
Strunz: 
2.EB.20
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0