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Formula: FeMoP
Phosphide, florenskyite group,
molybdenum-bearing mineral
Specific gravity: 7.819 calculated from the empirical formula
Colour: Light grey to greyish white
Environments
Nickolayite is a new mineral, approved in 2019 ad to date (October 2022) reported only from the type locality.
Localities
At the type locality, the Daba-Siwaqa complex, Transjordan Plateau, Amman Governorate, Jordan, nickolayite appears
as an accessory phase in the fused
clinopyroxene–plagioclase rocks
texturally resembling
gabbro–dolerite. The
irregularly shaped grains of nickolayite, up to 80 μm in size, are associated with
baryte, tridymite,
chromite, hematite,
pyrrhotite, fluorapatite,
titanite and powellite.
The origin of the mineral is probably connected to the processes of co-reduction of
molybdenum- and phosphorus- bearing minerals during high-temperature
pyrometamorphic processes
(MM 86.5.749-757).
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