Elements platinum group

COMPARISON OF MICROWAVE ASSISTED EXTRACTION METHODS FOR THE DETERMINATION OF PLATINUM GROUP ELEMENTS IN SOIL SAMPLES BY ELECTROTHERMAL ATOMIC ABSORPTION SPECTROMETRY AFTER PHASE SEPARATION-EXTRACTION... [Pg.290]

Crocket, J. H., Platinum-Group Elements in Mafic and Ultra-... [Pg.405]

Wilhelm, H.J. Zhang, H. Chen, F.L. Elsenbroek, J.H. Lombard, M., De Bruin, D. 1997. Geochemical exploration for platinum-group elements in the Bushveld Complex, South Africa. Mineralium Deposita,... [Pg.437]

Cabri, L.I., The Platinum Group Minerals. In (Cabri, L.J. ed) The Platinum Group Elements Mineralogy, Geology, Recovery. Johannesburg, South Africa, CIM Special Volume 23, Chapter 11, 1981. pp. 234-250. [Pg.44]

Boudreau AE, Mathez EA McCallum IS (1986) Halogen geochemistry of the Stillwater and Bushveld complexes evidence for transport of the platinum-group elements by Cl-rich fluids. J Pet 27 967-986 Boudreau AE, Stewart MA, Spivack AJ (1997) Stable Cl isotopes and origin of high-Cl magmas of the Stillwater Complex, Montana. Geology 25 791-794... [Pg.250]

Rhodium is recovered from platinum and other ores by refining and purification processes that start by dissolving the other platinum group metals and related impurities with strong acids that do not affect the rhodium itself Any remaining platinum group elements are removed by oxidation and bathing the mixture in chlorine and ammonia. [Pg.136]

Magmatic Cu-Ni ore bodies are hosted in quartz schist and partially in gneiss. The ore averages 4.2% Ni, 3.0% Cu, and 0.01-0.2% Co and contains a small amount of platinum group elements. The main minerals comprise violarite, pyrite, marcasite, chalcopyrite, quartz and plagioclase. [Pg.45]

Barnes, S.J., Prichard, H.P., Cox, R.A., Fisher, P.C., Godel, B. 2008. The location of the chalcophile and siderophile elements in platinum-group elements ore deposits (a textural, microbeam and whole rock geochemical study) Implication for the formation of ore deposits. Chemical Geology, 248, 295-317. [Pg.138]

Godel, B., Barnes, S.J., Maier, W.D. 2008. Platinum-group elements in sulphide minerals, platinum-group minerals, and whole-rocks of the Merenksy Reef (Bushveld Complex, South Africa). Journal of Petrology, 48, 1569-1604. [Pg.138]

Holwell, D.A. McDonald, I. 2007. Distribution of platinum-group elements in the Platreef at Overysel, northern Bushveld Complex a combined PGM and LA-ICP-MS study. Contributions to Mineralogy and Petrology, 154, 171-190. [Pg.138]

Quantitative mass balance of platinum-group elements in the Kelly Lake Ni-Cu-PGE deposit. Copper Cliff Offset, Sudbury. Economic Geology, 100, 1631-1646. [Pg.138]

Capobianco, C.H. Drake, M. 1990. Partitioning of ruthenium, rhodium, and palladium between spinel and silicate melt and implications for platinum-group element fractionation trends, Geochimica et Cosmochimica Acta, 54, 869-874. [Pg.200]

Prichard, H.M., Potts, P.J., Neary, C.R. 1981. Platinum group element minerals in the Unst chromite, Shetland Isles. Transaction of the Institution of Mining and Metallurgy (section B Applied Earth Sciences), 90, B186-B188. [Pg.200]

In a recent study on metal compounds, including the platinum group elements titanium and arsenic, the immunotoxicity was suggested to be dependent on speciation of the metals [90]. [Pg.450]

Ruthenium was the last of the platinum-group elements to be discovered, and has perhaps the most interesting and challenging chemistry of the six. In this book just one major aspect is covered its ability, mainly by virtue of its remarkably wide range of oxidation states which exist in its many complexes (from +8 to -2 inclusive) to effect useful and efficient oxidations of organic substrates. [Pg.264]

Platinum-190 decays to 186Os by emission of an a-particle. Both are platinum-group elements and thus the system has potential use for iron meteorites and PGE-bearing mineral deposits. Walker et al. (1997) determined the decay constant of 190Pt (X =(1.542 0.015) x 10 12 yr half-life =4.5 x 1011 years) and established parameters for... [Pg.277]

Chen, J. H., Papanastassiou, D.A. and Wasserburg, G. J. (1998) Re-Os systematics in chondrites and the fractionation of the platinum group elements in the early solar system. Geochimica et Cosmochimica Acta, 62, 3379—3392. [Pg.301]

In a limestone deposit at Kinnekulle, Sweden, a remarkable collection of more than 40 highly altered meteorites (Fig. 9.18) totaling 7.7 kg have been collected during routine guarrying operations (Schmitz etal., 1997,2001,2003). The 3.2-m-thick limestone layer in which they are found was deposited over -1.75 Myr in the mid-Ordovician. Despite being almost completely replaced by calcite, barite, and phyllosilicates, the meteorites are easily identified by their chondritic texture. Their identification as meteorites is confirmed by measurements of platinum-group elements. The chemical characteristics of relict spinels indicate that they are either L or LL chondrites. [Pg.338]

Several working groups have analyzed platinum group elements (PGEs) as possible markers of anthropogenic pollution in aerosols (in airborne particulates from automobile exhaust to check the emission of catalysts), mainly by ICP-MS.49 50 Airborne particles were also investigated with respect to selected element species (e.g., of Hg and Pb) by GC-ICP-MS.51,52... [Pg.306]

PCE- platinum group elements IDA - isotope dilution analysis RSD - relative standard deviation. [Pg.365]

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