Matches in SemOpenAlex for { <https://semopenalex.org/work/W2045068986> ?p ?o ?g. }
- W2045068986 endingPage "377" @default.
- W2045068986 startingPage "361" @default.
- W2045068986 abstract "Sulfide melt-silicate melt partition coefficients for Ir and Pd have been determined from experiments run in a piston-cylinder apparatus at 1450°C, 8 kbar and under ƒO2ƒS2 conditions appropriate for mafic magmas. Preferred values of DIr and DPd [D = (wt% silicate melt)(wt% silicate melt)] are 3.5·104 and 3.4·104, respectively. This validates the common assumption that sulfide melt dominates the geochemistry of the platinum-group elements in igneous processes. It also indicates that in magmatic differentiation processes in which sulfide alone controls precious metal abundance, Pd and Ir should not significantly fractionate from each other. The Pd results are consistent with those deduced from analyses of coexisting MORB sulfide and glass and with other published experiments. No dependence of DPd on ƒO2ƒS2 was observed. For Ir, disparate results were obtained depending on the nature of the starting material. Experiments using natural silicate glass as a starting material yielded consistent values of DIr in the range 2.5·104–5.4·104. The experiments included a compositional convergence, in which the Ir-bearing sulfide produced in one experiment was used as the starting material for the second experiment. The results using natural starting compositions are similar to the value of DIr deduced from analyses of MORB. In contrast, all experiments in which synthetic silicate starting compositions were used yielded erratic values of DIr from 13·104 to 152·104. There are several possibilities to account for these high and variable values: (1) an unidentified trace or minor element present in the natural compositions but absent in the synthetic ones might complex with Ir in the silicate melt and enhance its solubility, (2) this element might enhance reaction rate, or (3) an Ir-rich quench phase might have formed in the experiments using synthetic compositions but not in the natural ones and been removed during preparation of the charges for analysis. All of these possibilities suggest that the experiments using synthetic compositions are not appropriate for determining the behavior of Ir in nature. The preferred, experimentally-determined values of DIr and DPd do not explain the fractionation of these elements observed in natural systems. The observed relative and absolute abundances of Ir and Pd reflect either concentration of Ir or Pd in a phase other than sulfide or redistribution of the metals subsequent to their initial concentration." @default.
- W2045068986 created "2016-06-24" @default.
- W2045068986 creator A5029195868 @default.
- W2045068986 creator A5065721013 @default.
- W2045068986 creator A5069448363 @default.
- W2045068986 creator A5077916053 @default.
- W2045068986 date "1994-11-01" @default.
- W2045068986 modified "2023-10-07" @default.
- W2045068986 title "Experimentally determined sulfide melt-silicate melt partition coefficients for iridium and palladium" @default.
- W2045068986 cites W1486650545 @default.
- W2045068986 cites W1970089720 @default.
- W2045068986 cites W1970615851 @default.
- W2045068986 cites W1972689030 @default.
- W2045068986 cites W1977457396 @default.
- W2045068986 cites W1986713906 @default.
- W2045068986 cites W1986744113 @default.
- W2045068986 cites W1987288344 @default.
- W2045068986 cites W1993636664 @default.
- W2045068986 cites W1995115633 @default.
- W2045068986 cites W1995798238 @default.
- W2045068986 cites W1999522076 @default.
- W2045068986 cites W2000806497 @default.
- W2045068986 cites W2008937459 @default.
- W2045068986 cites W2020480319 @default.
- W2045068986 cites W2025299901 @default.
- W2045068986 cites W2034087206 @default.
- W2045068986 cites W2039932144 @default.
- W2045068986 cites W2045125485 @default.
- W2045068986 cites W2053994487 @default.
- W2045068986 cites W2056670083 @default.
- W2045068986 cites W2059651632 @default.
- W2045068986 cites W2062104243 @default.
- W2045068986 cites W2065011864 @default.
- W2045068986 cites W2069642745 @default.
- W2045068986 cites W2078584777 @default.
- W2045068986 cites W2079629767 @default.
- W2045068986 cites W2086414351 @default.
- W2045068986 cites W2086688562 @default.
- W2045068986 cites W2090808306 @default.
- W2045068986 cites W2094458634 @default.
- W2045068986 cites W2102148551 @default.
- W2045068986 cites W2105371086 @default.
- W2045068986 cites W2107227026 @default.
- W2045068986 cites W2107692624 @default.
- W2045068986 cites W2108364049 @default.
- W2045068986 cites W2134180398 @default.
- W2045068986 cites W2137545618 @default.
- W2045068986 cites W2138053432 @default.
- W2045068986 cites W2157956597 @default.
- W2045068986 cites W2169117356 @default.
- W2045068986 cites W2389701078 @default.
- W2045068986 doi "https://doi.org/10.1016/0009-2541(94)90138-4" @default.
- W2045068986 hasPublicationYear "1994" @default.
- W2045068986 type Work @default.
- W2045068986 sameAs 2045068986 @default.
- W2045068986 citedByCount "182" @default.
- W2045068986 countsByYear W20450689862012 @default.
- W2045068986 countsByYear W20450689862013 @default.
- W2045068986 countsByYear W20450689862014 @default.
- W2045068986 countsByYear W20450689862015 @default.
- W2045068986 countsByYear W20450689862016 @default.
- W2045068986 countsByYear W20450689862017 @default.
- W2045068986 countsByYear W20450689862018 @default.
- W2045068986 countsByYear W20450689862019 @default.
- W2045068986 countsByYear W20450689862020 @default.
- W2045068986 countsByYear W20450689862021 @default.
- W2045068986 countsByYear W20450689862022 @default.
- W2045068986 crossrefType "journal-article" @default.
- W2045068986 hasAuthorship W2045068986A5029195868 @default.
- W2045068986 hasAuthorship W2045068986A5065721013 @default.
- W2045068986 hasAuthorship W2045068986A5069448363 @default.
- W2045068986 hasAuthorship W2045068986A5077916053 @default.
- W2045068986 hasBestOaLocation W20450689861 @default.
- W2045068986 hasConcept C113196181 @default.
- W2045068986 hasConcept C127313418 @default.
- W2045068986 hasConcept C161790260 @default.
- W2045068986 hasConcept C167284885 @default.
- W2045068986 hasConcept C17409809 @default.
- W2045068986 hasConcept C178790620 @default.
- W2045068986 hasConcept C185592680 @default.
- W2045068986 hasConcept C191897082 @default.
- W2045068986 hasConcept C192552737 @default.
- W2045068986 hasConcept C192562407 @default.
- W2045068986 hasConcept C199289684 @default.
- W2045068986 hasConcept C2777335606 @default.
- W2045068986 hasConcept C2780596425 @default.
- W2045068986 hasConcept C2781251403 @default.
- W2045068986 hasConcept C42787717 @default.
- W2045068986 hasConcept C43617362 @default.
- W2045068986 hasConcept C502130503 @default.
- W2045068986 hasConcept C518104683 @default.
- W2045068986 hasConcept C55493867 @default.
- W2045068986 hasConceptScore W2045068986C113196181 @default.
- W2045068986 hasConceptScore W2045068986C127313418 @default.
- W2045068986 hasConceptScore W2045068986C161790260 @default.
- W2045068986 hasConceptScore W2045068986C167284885 @default.
- W2045068986 hasConceptScore W2045068986C17409809 @default.
- W2045068986 hasConceptScore W2045068986C178790620 @default.