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Cassiterite

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BMM598787

Cassiterite

Description Tabs

Description
Locality: 
Penouta Mines, Viana do Bolo, Orense, Galicia, Spain
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.3 × 3.8 × 3.2 cm
Description

Dark gray lustrous cassiterite on light matrix. The surfaces of the crystals show a fine striped structure. Nice piece from a less known locality.

Mineral Data
What's on the rock

Cassiterite

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