Magnesium polonide is unusual as it is not isostructural with magnesium telluride : although a nickeline-type phase has also been reported.
12.
Within the smelter itself, the nickeline contributes to high arsenic contents which require additional reagents and fluxes to strip from the nickel metal.
13.
Non-sulfide nickel minerals are typically soluble, and preserved rarely at surface as carbonates, although often can be preserved as nickel arsenates ( nickeline ) within gossans.
14.
Associated minerals include nickeline, nickel-skutterudite, cobaltite, ullmannite, maucherite, l�llingite, platinum-group minerals, millerite, pyrite, marcasite, and chalcopyrite.
15.
It occurs as a hydrothermal mineral in medium temperature veins association with skutterudite, safflorite, lollingite, nickeline, native bismuth, native silver, algodonite, domeykite and uraninite.
16.
Metamorphism may also be associated with metasomatism, and it is particularly common for arsenic to react with pre-existing sulfides, producing nickeline, gersdorffite and other Ni-Co arsenides.
17.
Mariners is renowned for its extremely high arsenic contents, with common arsenopyrite, nickeline, gersdorffite and other arseno-sulfide minerals common in the ore during the earlier years of mining.
18.
One example of this is the Widgiemooltha Dome, where carbonated hematite-bearing siliceous basalts containing native gold, arsenopyrite, nickeline and gersdorffite are encountered in the footwall of the Miitel nickel mine.
