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Formula: (Bi,Fe3+,☐)2Sb5+2O7
Antimonate
Specific gravity: 7.38
Hardness: 4 to 5
Colour: Yellow to yellow-brown, rarely greenish; brownish in transmitted light
Environments:
Bismutostibiconite is a secondary mineral forming earthy crusts on
quartz, baryte and
sandstone as an
alteration product of bismuth-rich
tetrahedrite-tennantite, associated with
tetrahedrite-tennantite,
chalcopyrite, beyerite,
atelestite, preisingerite,
bismutite,
malachite, azurite and
olivenite
(HOM, AM 69.1190, Mindat).
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