..., testibiopalladite, sudburyite, omeiite, michenerite, Pd-bearing melonite, and two unnamed PGM: (Ni,Pd) 2 (Sb, Bi,Te) and Pd 2 Sb ( Li et al. 2000 ). Pyrrhotite grains in the massive ores are up to 5 mm in diameter. Electron-microprobe analyses show that Ni contents of the pyrrhotite vary from 0.7 to 2.1 wt...

...). (b) Elongate crystal of omeiite associated with fractures in pentlandite (BSE). (c) Coarse, subhedral crystal of sperrylite associated with late veins of siderite, at the contact between the serpentinite hostrock and the hydrothermal PGE-rich ore (PRL). (d) Grain of Ni-bearing merenskyite associated...

... spinel ophiolites Albania Ukraine anduoïte minéral du groupe du platine arséniures chromitite spinelle chromifère ophiolites Albanie Ukraine Anduoite, (Ru,Os)As 2 , of orthorhombic symmetry, is considered to have the marcasite structure. It is isostructural with omeiite (Os,Ru...

... common sulfide. The most common platinum minerals are laurite (RuS 2 ), platinum-iron alloy, braggite ((Pt, Pd), S), and omeiite (OsAs 2 ). The PGM is generally euhedral to sub-hedral and enclosed in the chromite or at the grain boundaries of silicate and sulfides. The grain sizes are usually small...

... irarsite, omeiite, (Os,Ru)As 2 , and sperrylite (the most abundant), along with minor amounts of Ni-bearing merenskyite, testibiopalladite, and an unknown Ru-Te-As phase. The PGM form minute grains included in or associated with pyrrhotite, pentlandite, chalcopyrite, cobaltite–gersdorffite, cummingtonite...

... massif bear PGE mineralization with elevated contents of IPGE and Rh, which form their own mineral phases, including omeiite (Os,Ru)As 2 , irarsite IrAsS, and hollingworthite RhAsS. Note that the Zhelos massif is similar in enrichment in IPGE to ophiolites but differs from them in the type of ore...

... disulfides (laurite–erlichmanite series), Ru–Os diarsenides (anduoite–omeiite) and sulfarsenides (platarsite–osarsite–ruarsite). These PGM, crystallising relatively early, exhibit a close affinity to primary grains of base-metal sulfides. The second association is late, more diverse, and mainly consists...

... quartile following ISO (2005) . Table 4. List of PGM reported in Sittampundi Anorthosite Complex, Tamil Nadu PGM Reference Laurite (RuS 2 ) Sunder Raju and Merkle, 2007 Omeiite (OsAs 2 ) Sunder Raju et al., 2008 Pt-Fe alloy Native Pt Stibiopalladinite (Pd, Cu) 5 Sb...

... hcp Electron configuration [Xe]4f 14 5d 6 6s 2 [Xe]4f 14 5d 7 6s 2 [Kr]4d 7 5s 1 S Erlichmanite (OsS 2 ) Xingzhongite [(Pb,Cu,Fe)(Ir,Pt,Rh) 2 S 4 ] Laurite (RuS 2 ) Kashinite (Ir,Rh) 2 S 3 Cuproiridsite CuIr 2 S 4 As Omeiite [(Os,Ru)As 2 ] Iridarsenite [(Ir,Ru)As 2...