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Formula: PtSn
Alloy of platinum and tin
Crystal System: Hexagonal
Specific gravity: 13.4 calculated
Hardness: 3
Colour: Silver-white
Solubility: No reaction with common acids
Common impurities: Pd,Sb,Bi,Te
Environments
Niggliite occurs in late-forming hydrothermal veins
(HOM).
Localities
At the Sudbury Complex, Sudbury District, Ontario, Canada, niggliite is associated with
froodite
(HOM).
At the Xiaonanshan Cu-Ni-(Pt-Pd) deposit, Wuchuan county, Hohhot League, Inner Mongolia, China, niggliite
is associated with leadamalgam,
chromite, ilmenite,
magnetite, gersdorffite,
pyrite, chalcopyrite,
violarite, millerite,
galena, stibnite,
electrum, sperrylite,
iridosmine, platinum,
merenskyite and kotulskite
(HOM).
At the Monchegorsk Cu-Ni Deposit, Monchegorsk, Murmansk Oblast, Russia, niggliite occurs in close association
with stannopalladinite, hessite
and tellurides of platinum and
palladium
(AM 56.360-361).
At the type locality, Waterfall gorge, Insizwa, Alfred Nzo District, Eastern Cape, South Africa, niggliite was
found in the concentrates from oxidised ore from the dumps. Associated minerals included
sperrylite, chalcopyrite,
cubanite, pentlandite,
bornite, parkerite,
insizwaite and pyrrhotite
(AM 23.64, HOM).
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