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Ullmannite Var Kallilith

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CAM185334

Ullmannite Var Kallilith

with antique label
Classic Locality

Description Tabs

Description
Locality: 
Silberquelle Mine, Obersdorf, Siegen, Arnsberg, North Rhine - Westphalia, Germany
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2 × 2 cm
Description

Kallilite, a mixture of ullmannite, bismuthinite, hauchecornite and millerite was originally assumed to be Bi-rich ullmannite and for a short while even a new species.
This sample has a rich coverage, all around the specimen, of grey metallic kallilite in a siderite matrix.
Comes with an antique label, dating before 1919.

Mineral Data
What's on the rock

Ullmannite

Formula: 
NiSbS
Strunz: 
2.EB.25
Crystal System: 
Isometric
Hardness: 
5.0 - 5.5
Type Locality: 
Storch und Schöneberg Mine, Gosenbach, Siegerland, North Rhine-Westphalia, Germany
Cartils Minerals

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