SYNTHETIC "COOPERITE", "BRAGGITE", AND "VYSOTSKITE" IN THE SYSTEM PTS-PDS-NIS AT 1100°C, 1000°C, AND 900°C
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dc.contributor.author | Verryn S.M.C. | |
dc.contributor.author | Merkle R.K.W. | |
dc.date.accessioned | 2021-01-25T04:55:58Z | |
dc.date.available | 2021-01-25T04:55:58Z | |
dc.date.issued | 2000 | |
dc.identifier | https://elibrary.ru/item.asp?id=990314 | |
dc.identifier.citation | Mineralogy and Petrology, 2000, 68, 1, 0063-0073 | |
dc.identifier.issn | 0930-0708 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/23767 | |
dc.description.abstract | Results of experimental investigations in the dry system PtS-PdS-NiS at 1100°C, 1000°C, and 900°C are presented. The phases observed at 1100°C are "cooperite" and a melt, at 1000°C "cooperite", "braggite", and a melt and at 900°C "cooperite", "braggite", "vysotskite", Ni1-xS, and a melt. At 1100°C the maximum solubility of Ni in ideal, Pd-free "cooperite" is 2.7 atomic per cent and the Pd-content limit in Ni-free "cooperite" is 12.8 atomic per cent. At 1000°C the maximum solubility of Ni in ideal, Pd-free "cooperite" is 3.3 atomic per cent and the Pd-content in Ni-free "cooperite" is 13.7 atomic per cent. The "braggite" composition ranges from Pt0.56Pd0.38Ni0.06S and Pt0.59Pd0.41S in a Ni-saturated and Ni-free environment respectively to Pt0.18Pd0.80Ni0.02S and Pt0.14Pd0.86S respectively. At 900°C the maximum Ni-content in ideal Pd-free "cooperite" is 3.1 atomic per cent and the Pd-limit in Ni-free "cooperite" is 12.5 atomic per cent. The "braggite" composition ranges from Pt0.59Pd0.29Ni0.12S and Pt0.60Pd0.40S for a Ni-saturated and Ni-free environment respectively, to Pd0.91Ni0.09S and PdS respectively. The Ni-content in "braggite" and "vysotskite" increases slightly with increasing Pt/Pd ratios and is higher at 900°C than at 1000°C. Comparison of experimental trends with cooperite, braggite, and vysotskite analyses from the literature implies high temperatures of formation for Pt-Pd-Ni sulphides in placers if Ni-saturation is assumed. | |
dc.title | SYNTHETIC "COOPERITE", "BRAGGITE", AND "VYSOTSKITE" IN THE SYSTEM PTS-PDS-NIS AT 1100°C, 1000°C, AND 900°C | |
dc.type | Статья |
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