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Cassiterite

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TMT209146

Cassiterite

Crofty worker, self-collected

Description Tabs

Description
Locality: 
South Crofty Mine, Pool, Carn Brea, Cornwall, United Kingdom
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 4 × 3.3 cm
Description

Rich brownish fine-grained cassiterite in tourmaline-chlorite and minor quartz matrix. 225 grams in weight.

Mineral Data
What's on the rock

Cassiterite

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