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Cassiterite With Gilbertite

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PDM929872

Cassiterite With Gilbertite

Classic Locality

Description Tabs

Description
Locality: 
Great Wheal Fortune, Breage, Cornwall, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10.7 × 8.1 × 5.6 cm
Largest Crystal: 
0.30cm
Weight: 
580.00gr
Description

Big specimen (580g) with a surface richly spotted by tens of brown euhedral cassiterite crystals, associated to quartz and muscovite of the gilbertite variety. The general condition is very good.

Great Wheal Fortune is a super classic mine, that was active in the XIX Century (1855 to 1880). Collected by Nick Eastwood in 1984.

Combine specimens to reduce shipping costs!.

Mineral Data
What's on the rock

Cassiterite

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

Gilbertite

Variety Of: 

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Hardness: 
0.0

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