Other platinum-group elements (rhodium, ruthenium, iridium and osmium) occur exclusively in solid solution in pyrrhotite and pentlandite
Chalcopyrite with Ep 250 mV acts as cathode in the presence of pentlandite
(Ep-180mV) and pyrrhotite (Ep-120mV).
The predominantly norite rock matrix contained pyrrhotite as the major sulphide with small amounts of pentlandite
[(Fe,Ni)9 S8] and chalcopyrite (CuFe[S.
70-62]) [+ or -] hornblende (pargasite-pargasitic hornblende), phlogopite- biotite (Fe/Fe+Mg = 12-40) Accessory magnetite, ilmenite, apatite apatite, titanite, minerals pyrrhotite, chalcopyrite, pentlandite
, Textures layering, cumulate layering, cumulate, ophitic Calais Quartz Diorite Baring Granite Principal quarts diorite, diorite, syenogranite, rock types tonalite, granodiorite, monzogranite, quartz monzonite granodiorite, tonalite Primary plagioclase ([An.
Minerals such as pentlandite
, galena and gold are easily caught in the circulating load around the mill until they are overground and rendered more difficult to collect.
During development of the 155m level of the McWatters mine, a pentlandite
vein grading 13%-19% nickel was discovered which dipped downwards to the west and east of the floor of the drift.
Analysis of the samples confirms that pentlandite
is the main source of the nickel minerals and chalcopyrite is the dominant copper mineral.
, monoclinic pyrrhotite and chalcopyrite are dominant in the lower zone of the Platreef, whereas pentlandite
, hexagonal pyrrhotite and chalcopyrite ([+ or -] cubanite) predominate in the upper zone (Gain and Mostert, 1982).
The Whistle embayment sulphides are predominantly pyrrhotite and pentlandite
Although heap leaching is a common activity in the gold sector throughout Australia, Titan's trial will be the first time in the world that bacterial heap leaching has been used to treat pentlandite
The PGMs occur with sulphide minerals within the J-M Reel principally pyrrhotite, chalcopyrite, and pentlandite
The major minerals of economic interest are Pentlandite
The drilling intersected long intervals of low-grade nickel and cobalt mineralization consisting of pervasive intergranular sulfide minerals: pyrite, pyrrhotite, chalcopyrite (copper sulfide) and pentlandite
These values are associated with pyrrhotite, pentlandite
and chalcopyrite mineralization found at two sites along a gabbroic anorthosite, quartzite contact;
= cobaltpentlandite: there is an argentopentlandite and several minerals with cobalt- as prefix