... , “The effect of chromite crystallization on the distribution of osmium, iridium, ruthenium and rhodium in picritic magmas: An example from the Emeishan large igneous province, southwestern China,” Journal of Petrology , vol. 57 , no. 5 , pp . 1019 – 1048 , 2016 . 95 P. Pagé , S.-J...

... clots ( Fig. 3b ). The Ru-dominant compositions correspond to ruthenium or rutheniridosmine; both are uncommon and typically occur as angular relics ( Figs. 4c , 5b ). §   Corresponding author e-mail address : [email protected] In the Mount Lysan area ( Fig. 1b...

... of the systems cobalt ruthenium sulfide (Co 1– x Ru x S 2 ) and rhodium ruthenium sulfide (Rh 1 -x Ru x S 2 ) . Inorganic Chemistry , 22 , 61 – 63...

... for hydrogen species. The catalytic performance test confirmed that the bimetallic catalyst has significantly greater activity and stability. The optimal loadings are 5% copper and 1% ruthenium, and the performance of this catalyst is comparable to those of noble-metal Pt/M catalysts. * Email: liunw...

... . DOI: 10.1007/s00410-006-0126-z Barnes, S.J. & Fiorentini, M.L. (2008) Iridium, ruthenium and rhodium in komatiites: Evidence for iridium alloy saturation . Chemical Geology 257...

..., iridium and ruthenium based on new compositional data of alloys from world-wide occurrences . The Canadian Mineralogist , 12 , 104 – 112 . Harris D.C. and Cabri L.J. ( 1991 ) Nomenclature of platinum-group element alloys: review and revision . The Canadian Mineralogist , 29 , 231...

... 2019 19 10 2019 Copyright © 2020 by the Mineralogical Society of America 2020 Mineralogical Society of America Oxygen fugacity ruthenium/ruthenium dioxide experimental petrology phase relations equation of state Knowledge of the redox conditions, or more specifically...

... (1-2) , pp. 23 – 43 . Capobianco., C.J. , Drake, M.J. (1990) Partitioning of ruthenium, rhodium, and palladium between spinel and silicate melt and implications for platinum group element fractionation trends . Geochim. Cosmochim. Acta , v. 54 (3) , pp. 869 – 874 . Cidu...

..., from 0.10 to 0.30% (mass), by electron-microprobe analysis, are too elevated compared to ours and may be an artifact of the electron microprobe. The compositional differences are graphically shown in the multi-element plot of Figure 2 . Ruthenium, Rh, Os, and Ir are remarkably depleted, up to five...

... , 3 , 126 – 175 . Laurenz , V. , Fonseca , R.O. , Ballhaus , C. , Jochum , K.P. , Heuser , A. , and Sylvester , P.J. ( 2013 ) The solubility of palladium and ruthenium in picritic melts: 2. The effect of sulfur . Geochimica et Cosmochimica Acta , 108 , 172 – 183...

..., Krasnoyarskiy kray, and the second pertains to the Miass placer zone, Chelyabinsk oblast, in the southern Urals. The platinum-group element (PGE) mineralization in both cases is mostly (at least 80%) represented by alloy minerals in the system Ru–Os–Ir, in the order of occurrence osmium, ruthenium and iridium...

..., iridium, and ruthenium based on new compositional data of alloys from worldwide occurrences . Canadian Mineralogist , 12 , 104 – 112 . Harris , D.C. and Cabri , L.J. ( 1991 ) Nomenclature of platinum-group-element alloys: review and revision . Canadian Mineralogist , 29 , 231 – 237...

...) and shows a chondrite-normalized PGE pattern with a slightly positive slope, with enrichment in Pt and Pd relative to Os and Ir. Ruthenium and Rh show positive and negative peaks, respectively. In agreement with the PGE distribution, the following platinum-group minerals (PGM) have been found: laurite ((Ru...

...% laurite grains), followed by Os- and Ir-dominant alloys (i.e., the minerals osmium and iridium, respectively); unnamed phases of ruthenium selenide [RuSe 2 ] and rhodium telluride [RhTe] are rare. Selenium-rich laurite, not reported previously, likely belongs to an inferred RuS 2 –RuSe 2 series. Native Ru...

... a heavy separate of Mo–Ni–PGE-Au black shale from the Huangjiawan mine (Guizhou Province, south China) resulted in the following findings: – pyrite showed Pt, Re, Au and As concentrations up to 0.23 ppm, 0.42 ppm, 4.96 ppm and 18 400 ppm, respectively. Ruthenium, Rh, Pd and Ir were below minimum...

... the understanding of the mineralogy. 12 January 2016 14 October 2016 © 2017 Mineralogical Association of Canada 2017 TABLE 2. CONTINUED. laurite ruthenium PGE PGM Stillwater Complex layered mafic/ultramafic complex Bushveld Complex ophiolite chromitite Laurite...

... (Pt 2 FeNi), and tulameenite (Pt 2 FeCu). Equally, the term Os-Ir-Ru alloy is used for all members of this ternary system which contains the minerals osmium, iridium, ruthenium, and rutheniridosmium. The listing below approximately follows the relative frequency of the PGM with alloys first, followed...