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Montbrayite - Kalgoorlie-Boulder City

Collectors Summary

Chemical Formula (Au,Ag,Sb,Bi,Pb)23(Te,Sb,Bi,Bi,Pb)38
Color gelblichweiß-met.
Lustre Metallglanz
Hardness (Mohs) 2.5
Cleavages {110}, {011}, {111}
Fracture flach, muschelig
Solubility + HNO3
Crystal System triklin, P1