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Cassiterite Var Wood Tin

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PDM764676

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: 
1.9 × 1.1 × 0.8 cm
Description

Old time classic from Macha (Bolivia) of botryoidal cassiterite, variety wood tin. It is a lustrous and quite aesthetic elongated multi-layered specimen of concentric internal texture. Such cassiterite pieces are very uncommon nowadays because they were originated from a few historic localities and in limited amounts.

This was collected in the late 1940’s by Dr. Fritz Berndt (Berndtite is named after him). Ex. Dr. Jaroslav Hyrsl specimen.

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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