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Compositional variations and reflectance of the common platinum-group minerals

Chemische Variation und Reflexion der wichtigsten Minerale der Platingruppe

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Summary

A detailed study of the compositional variations of 22 different platinum-group minerals, of Os-Ir-Ru- and Pt-Fe alloys, Pt-Pd- and Ru-Os-Ir sulfides, RhIr-Pt sulfarsenides and Pd-Pt tellurides from various deposits resulted in verification of extensive solid solution series and element substitution within different mineral groups. On the basis of representative new microprobe analyses and related spectral reflectance curves of the platinum-group minerals investigated significant correlations between chemical composition and reflectance are discussed.

Zusammenfassung

Die Untersuchung der chemischen Variation bei 22 Platinmineralen aus der Gruppe der Os-Ir-Ru- und Pt-Fe-Legierungen, Pt-Pd- und Ru-Os-Ir-Sulfide, Rh-Ir-Pt-Sulfarsenide und Pd-Pt-Telluride ergibt signifikante Mischkristallbildung und Element-Substitutionen innerhalb der unterschiedlichen Mineralgruppen. Anhand neuer Mikrosondenanalysen und der zugehörigen spektralen Reflexionskurven der betreffenden Platinminerale werden die Korrelationen zwischen Chemismus und Reflexion diskutiert.

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Authors and Affiliations

  1. Mineralogisch-Petrographisches Institut der Universität, Grindelallee 48, D-2000, Hamburg 13, Germany

    M. Tarkian

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  1. M. Tarkian
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With 17 Figures

Contribution to the Ore Mineralogy Symposium (IMA/COM) at the 14th General Meeting of the International Mineralogical Association, at Stanford, California, in July, 1986.

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Tarkian, M. Compositional variations and reflectance of the common platinum-group minerals. Mineralogy and Petrology 36, 169–190 (1987). https://doi.org/10.1007/BF01163258

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  • DOI: https://doi.org/10.1007/BF01163258

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