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Ullmannite

Type Locality
Storch und Schöneberg Mine, Gosenbach, Siegerland, North Rhine-Westphalia, Germany
Mineral Data
NiSbS
Strunz: 
2.EB.25
Physical Properties
Crystal System: 
Isometric
Hardness: 
5.0 - 5.5
Tenacity: 
brittle
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