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Westerveldite On Herzenbergite

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HEF1052265

Westerveldite On Herzenbergite

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Description
Locality: 
Oruro City, Cercado Province, Oruro Department, Bolivia
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 0.6 × 0.1 cm
Description

Very rare and extraordinarily large crystal aggregate of gray metallic herzenbergite. For herzenbergite this is an extremely large crystal aggregate (1.7 centimeters in length)! Numerous microcrystalline westerveldite aggregates have grown on top. Both minerals (herzenbergite and westerveldite) were analytically detected, as was elemental tin.

You will receive the specimen with a complete certificate of analysis (four pages).

From a find in the 1950s. Ex. Dr. Fritz BERNDT Collection.

Mineral Data
What's on the rock

Westerveldite

Formula: 
(Fe,Ni,Co)As
Strunz: 
2.CC.15
Hardness: 
5.5 - 6.0
Type Locality: 
La Gallega Mine, Ojén lherzolite massif, Ojén, Málaga, Andalusia, Spain

Herzenbergite

Formula: 
(Sn,Pb)SnS2
Strunz: 
2.CD.05
Crystal System: 
Orthorhombic
Hardness: 
2.0
Type Locality: 
Maria-Teresa Mine, Huari, Avaroa Province, Oruro Department, Bolivia

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