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Cassiterite Var Wood Tin

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PDM722888

Cassiterite Var Wood Tin

Classic Locality

Description Tabs

Description
Locality: 
Macha, Chayanta, Potosi Department, Bolivia
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.1 × 1 cm
Description

Old time classic from Macha (Bolivia) of botryoidal cassiterite, variety wood tin. It is a lustrous and quite aesthetic multi-layered specimen of concentric internal texture, with the core coloured yellow to cream with reddish-brown external layers. It is crystallized all-around and in pristine condition!.

Such pieces of cassiterite are very uncommon nowadays because they came usually from a few historic localities and in limited amount. This was collected in the late 1940’s by Dr. Fritz Berndt (Berndtite is named after him).

Mineral Data
What's on the rock

Cassiterite

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

Wood Tin

Variety Of: 

Cassiterite

Formula: 
SnO2
Strunz: 
4.DB.05
Hardness: 
6.0 - 7.0
Hardness: 
0.0

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