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Cassiterite On Wolframite & Dolomite

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PJM75084

Cassiterite On Wolframite & Dolomite

Ex J& S Mommers Collection

Description Tabs

Description
Locality: 
Tae Hwa Mine, Neungam-ri , Angseong-myeon, Chungju, Chungcheong Province, South Korea
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 2.8 × 1.8 cm
Description

Collected in the late 1960's, by an Australian geologist working at the Tae Hwa Mine, this sharp and lusterous wolframite group is enhanced by a twinned cassiterite crystals to 1 cm to one side and a snow like dusting of dolomite across the top of the specimen. A great combination from a long defunct location.

Acquired by the seller in 1986.

Mineral Data
What's on the rock

Cassiterite

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

Wolframite

Synonym Of: 

Hübnerite

Formula: 
MnWO4
Strunz: 
4.DB.30
Hardness: 
4.0 - 4.5

Ferberite

Formula: 
FeWO4
Strunz: 
4.DB.30
Hardness: 
4.0 - 4.5
Formula: 
(Fe2+)WO4 to (Mn2+)WO4
Crystal System: 
Monoclinic
Hardness: 
4 - 4.5
Colour: 
Greyish-black
Streak: 
Reddish Brown

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White
Earthstones Australia

Seller Information

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