Record details

Title
    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)
Author
    Aiglsperger, Thomas
    Pašava, Jan
    Vymazalová, Anna
    Zaccarini, Federica
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Journal of Geosciences
Vol./nr.
    Roč. 58, č. 3
Pages
    8
Year
    2013
Thesaurus term
    Mo-Ni-PGE black shale, PGE concentrations in pyrite and Ni-sulfides, Re concentration in pyrite, hydroseparation, electron microprobe study, south China
Keyword
    Black
    Carriers
    China
    Data
    Elements
    Guizhou
    Metal-rich
    Mo-Ni-PGE
    New
    Overview
    PGE
    Platinum-group
    Principal
    Province
    Region
    Shales
    South
    Zunyi
Abstract (in english)
   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).
Contributor
    Česká geologická služba
Contributor code
    ČGS (RIV)
Source format
    R
Import date
    15. 10. 2014