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A key-diagram for the optical determination of platinum-group minerals

Ein Diagramm für die optische Bestimmung von Mineralen der Platingruppe

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Summary

A key-diagram for optical routine investigation of platinum-group minerals has, for the first time, been developed on the basis of the most recent reflectance and microhardness data. The diagram contains 65 minerals, which occupy defined fields. The dominating platinum metal present in the respective minerals has been characterized by giving eachPGE a special colour. In addition, cubic (isotropic) minerals can be distinguished. The most important aspects of spectral reflectance have also been summarized.

Zusammenfassung

Ein Diagramm für die optische Routineuntersuchung von Mineralen der Platingruppe wurde erstmals auf Grund der neuesten Reflexions-und Mikrohärtedaten entwickelt. Das Diagramm enthält 65 Minerale, die imR-VHN-Feld definierte Bereiche besetzen, und je nach dem vorherrschenden Platinmetall durch bestimmte Farben charakterisiert sind. Zusätzlich werden auch kubische (isotrope) Minerale graphisch gekennzeichnet. Wichtige Aspekte der spektralen Reflexion sind ebenfalls dargestellt.

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Author notes

  1. M. Tarkian &  H.-J. Bernhardt

    Present address: Mineralogisch-Petrographisches Institut, University of Hamburg, Grindelallee 48, D-2000, Hamburg 13, Federal Republic of Germany

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    1. M. Tarkian
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    2. H.-J. Bernhardt
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    Tarkian, M., Bernhardt, HJ. A key-diagram for the optical determination of platinum-group minerals. TMPM Tschermaks Petr. Mitt. 33, 121–129 (1984). https://doi.org/10.1007/BF01083067

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    • DOI: https://doi.org/10.1007/BF01083067

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