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Formula: Cu4AgPb2Bi9S18
Sulphosalt, pavonite homologous series group,
bismuth-bearing mineral
Crystal System: Monoclinic
Specific gravity: 6.78 calculated for the ideal formula
Hardness: 4 to 4½
Streak: Grey
Colour: Grey
Environments
Metamorphic environments
Hydrothermal environments
Cupromakovickyite occurs as exsolution lamellae or discrete grains associated with sulphosalts in
skarn around granite and
in scheelite-bearing quartz veins
in felsic gneiss and
amphibolite
(HOM).
Localities
At the type locality, the Western ore field, Mittersill Scheelite deposit, Mittersill, Zell am See District,
Salzburg, Austria, the minerals associated with cupromakovickyite are
bismuthinite derivatives in the range
aikinite–krupkaite,
hodrušite, cuprobismutite,
kupčikite, traces of
wittichenite, native bismuth,
chalcopyrite and pyrrhotite
in a matrix of quartz. This mineralisation is formed by the
recrystallisation of quartz veins containing sulphides and sulphosalts and
hosted within felsic
gneiss and
amphibolite. Recrystallisation occurred during the retrograde
stage of Alpine metamorphism
(CM 46.2.503-514).
At the Băiţa mining district, Nucet, Bihor County, Romania, cupromakovickyite occurs in a
skarn that was created by the reaction of
granitic magma with Triassic (251.9 to 201.4 million years ago)
dolostone.
Cupromakovickyite occurs as rare homogeneous grains and in aggregates that consist of a lamellar intergrowth
with makovickyite. The associated minerals are
bismuthinite derivatives in the range
aikinite–friedrichite,
hodrušite, padĕraite, traces
of kupčikite, emplectite,
wittichenite, tetradymite,
and abundant chalcopyrite in a matrix of
dolostone. The
copper-bismuth association appeared
during the late stages of the skarn formation
(CM 46.2.503-514).
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