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Bismutite Psm Bismuthinite

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PDM633938

Bismutite Psm Bismuthinite

Pseudomorph

Description Tabs

Description
Locality: 
Luntukulu, Bukavu, South Kivu, DR Congo
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 1.4 × 0.8 cm
Description

Cream coloured coating of bismutite formed replacement of bismuthinite. Uncommon locality.

Acquired in 1995 it is an Ex.PhD Geologist Bob Janssens, specimen #1772.

Mineral Data
What's on the rock

Bismutite

Formula: 
(BiO)2CO3
Strunz: 
5.BE.25
Crystal System: 
Tetragonal
Hardness: 
2.5 - 3.5
Streak: 
Grey
Type Locality: 
Arme Hilfe Mine, Ullersreuth, Hirschberg, Vogtland, Thuringia, Germany

Bismuthinite

Formula: 
Bi2S3
Strunz: 
2.DB.05
Hardness: 
2.0 - 2.5
Streak: 
Lead-gray

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