Podrobnosti záznamu

Název
    The principal carriers of platinum-group elements (PGE) in metal-rich black shales: 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 ve sborníku
Zdrojový dokument - monografie
    Mineral deposit research for high-tech world. Proceedings of the 12th Biennial SGA Meeting
Strany
    4
Poznámky
    Akce: 2013/08/12 ; Uppsala
Výraz tezauru
    Mo-Ni-PGE black shale, hydroseparation, electron microprobe study, anomalous PGE in pyrite and Ni sulfides
Klíčové slovo
    Black
    Carriers
    China
    Data
    Elements
    Guizhou
    Metal-rich
    Mo-Ni-PGE
    New
    PGE
    Platinum-group
    Principal
    Province
    Region
    Shales
    South
    Zunyi
Abstrakt (anglicky)
   We studied Lower Cambrian marine Mo-Ni sulfidic black shales from the Huangjiawan mine in Guizhou Province, south China in which anomalous PGE values (of up to ~1 ppm) were reported. For identification of principal PGE carriers, we used heavy mineral separates which were produced by innovative hydroseparation (HS) technique. A detailed electron microprobe study did not result in identification of discrete platinum-group minerals (PGM). The most abundant sulfides (grainy/not framboidal pyrite, millerite and gersdorffite) were analyzed for PGE and Re. Grainy pyrite contains up to 490 ppm Pt, 390 ppm Pd and 220 ppm Rh. Millerite contains up to 530 ppm Pt, 320 ppm Pd and 190 ppm Rh. Gersdorffite contains up to 410 ppm Pt, 320 ppm Pd with no Rh detected. Rhenium concentration (up to 610 ppm) was detected only in grainy pyrite. Despite anomalous PGE concentrations the Mo-Ni black shale doesn´t contain any discrete PGE phases. PGE are bound to pyrite and Ni-sulfides (millerite and gersdorffi
   te).
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
    R
Datum importu
    15. 10. 2014