Sulphide, pyrite group, forms a series with cattierite, nickel-bearing mineral
Specific gravity: 4.45
Hardness: 4½ to 5½
Colour: Black, silver-grey
Common impurities: Co,Fe
Vaesite occurs associated with arsenic-deficient
polydymite and uraninite
At Schneeberg, Erzgebirgskreis, Saxony, Germany, vaesite occurs as a secondary alteration product of arsenic-deficient nickelskutterudite (Webmin, HOM).
At the type locality, the Kasompi Mine, Kolwezi mining district, Lualaba, DR Congo, vaesite occurs disseminated through dolostone (HOM).
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