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Izoklakeite In Bismuthinite & Chalcopyrite

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CLB641962

Izoklakeite In Bismuthinite & Chalcopyrite

ex collection Dr. M. Schur
Rare Mineral

Description Tabs

Description
Locality: 
Vena Mines, Hammar, Askersund, Örebro County, Sweden
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.6 × 5 × 3.3 cm
Description

Very rare sample of izoklakeite in bismuthinite in quartz matrix with some golden chalcopyrite.

It's nt pissible to show the inclusions, but the darker gray parts on the left side of the silvery spot on the first picture might be the izoklakeite crystals.

Dr. Schur consequently analyses his specimens..

Mineral Data
What's on the rock

Izoklakeite

Formula: 
Pb27(Cu,Fe,Ag)2(Sb,Bi)19S57
Strunz: 
2.HB.10b
Hardness: 
3.5 - 4.0
Type Locality: 
Vena Mines, Hammar, Askersund, Närke, Sweden

Bismuthinite

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

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0

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