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Formula: ZnSn2Al12O22(OH)2
Hydroxide, nigerite group
Crystal System: Trigonal
Specific gravity: 4.456 calculated
Luminescence: Not fluorescent under long or short wave UV
Environments
Zinconigerite-2N1S is a new mineral, approved in 2018.
Localities
At the type locality, the Xianghualing mine, Xianghualing Sn-polymetallic ore field, Linwu county, Chenzhou, Hunan,
China, zinconigerite-2N1S and zinconigerite-6N6S have
been discovered in skarn as aggregates, sub-to-euhedral crystals up
to 100 μm in
size, within fluorite aggregates, and closely associated with
phlogopite, chrysoberyl,
magnetite, cassiterite,
margarite and
nigerite-taaffeite group
minerals.
Zinconigerite-2N1S likely crystallised under fluorine-rich conditions during late stages of the
skarn formation
(AM 107.1952-1959).
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