Podrobnosti záznamu

Název
    Platinum-group elements (PGE) and their principal carriers in metal-rich black shales: an overview with a new data from Mo-Ni-PGE black shales (Zunyi region, Guizhou Province, south China)
Autor
    Aiglsperger, Thomas
    Pašava, Jan
    Vymazalová, Anna
    Zaccarini, Federica
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Journal of Geosciences
Svazek/č.
    Roč. 58, č. 3
Strany
    8
Rok
    2013
Výraz tezauru
    Mo-Ni-PGE black shale, PGE concentrations in pyrite and Ni-sulfides, Re concentration in pyrite, hydroseparation, electron microprobe study, south China
Klíčové slovo
    Black
    Carriers
    China
    Data
    Elements
    Guizhou
    Metal-rich
    Mo-Ni-PGE
    New
    Overview
    PGE
    Platinum-group
    Principal
    Province
    Region
    Shales
    South
    Zunyi
Abstrakt (anglicky)
   Lower Cambrian Mo-Ni sulfidic black shales from the Huangjiawan mine (Guizhou Province, south China) have anomalous platinum-group elements (PGE) concentrations (up to ~1 ppm in total). In order to identify principal PGE carriers, we used heavy mineral separates which were produced by innovative hydroseparation techniques. Subsequent detailed mineralogical study using electron microprobe did not result in the identification of discrete platinum-group minerals. Pyrite (grainy, not framboidal), millerite and gersdorffite that were identified in our heavy concentrate were analyzed for PGE and Re. We found that they contain the following concentrations of PGE and Re: pyrite (up to 490 ppm Pt, 390 ppm Pd and 220 ppm Rh), millerite (up to 530 ppm Pt, 430 ppm Pd and 190 ppm Rh) and gersdorffite (up to 410 ppm Pt and 320 ppm Pd; no Rh detected). Rhenium was detected only in grainy pyrite (up to 1060 ppm). It was found that despite anomalous PGE concentrations, the Mo-Ni black shales do not con
   tain any platinum-group minerals and that the PGE are bound to pyrite and Ni-sulfides (millerite and gersdorffite).
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
    R
Datum importu
    15. 10. 2014