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Cassiterite

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TMT209144

Cassiterite

Crofty worker, self collected.

Description Tabs

Description
Locality: 
South Crofty Mine, Pool, Carn Brea, Cornwall, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.6 × 5.5 × 1.4 cm
Description

Dark brownish crystalline mass with a little quartz. The bluish colouration in the quartz is due to inclusions of tourmaline.

Mineral Data
What's on the rock

Cassiterite

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