Record details

    PGE-kovonosné černé břidlice v jižní Číně: mechanismus jejich obohacení a environmentální aspekty
Statement of responsibility
    Jan Pašava, Bohdan Kříbek, Karel Žák, Chaoyang Li, Zhenmin Gao, Taiji Luo, Mingguo Zeng
Other titles
    PGE metal-rich black shales in south China: mechanism of metal enrichment and environmental aspects
    Gao, Zhenmin
    Kříbek, Bohdan, 1946-
    Li, Chaoyang
    Luo, Taiji
    Pašava, Jan
    Zeng, Mingguo
    Žák, Karel, 1957-
Source title - serial
    Zprávy o geologických výzkumech v roce 2001
    s. 193-196
    1 obr., 9 bibl.
    Anglické resumé
    Zkr. název ser.: Zpr. geol. Výzk. v Roce 2001.
Subject group
    břidlice černá
    geologie ložisková
    geologie regionální
    ložisko stratiformní
    mezinárodní spolupráce
    rudy barevných kovů
    rudy Mo
    rudy Ni
    studie environmentálních vlivů
Geographical name
    Čína jižní
    Guizhou (Čína jižní)
Abstract (in english)
   The Zunyi region in Guizhou province /south China) is well known by the occurrences of Mo-Ni-polyelement black shales that are locally mined and processed for Mo. The preliminary results of our study covering the vicinity of the Xiao-Zhu mine, Jiepo-Ling and Tien Shan Bao Mo-Ni prospects can be summarized as follows: (1) Studied soil samples from all three Ni-Mo prospects are characterized by increased Mo, Ni, As, Cd, Zn and Cu concentrations and lower Pb values when compared to the orlide averages for normal soil (BOWEN 1979). Mo, As, and Ni values in our soil samples are very often above permissible levels suggested by KLOKE (1979). (2) Maximum Mo concentration as found in rice stalk and maximum As concentration in the bulb of edible wwater plant close to the Xiao-Zhu Mo-Ni mine. Peak Ni, Zn and Hg concentrations were detected in corn grain of the Jiepo-Ling area. Cd seems to accumulate preferentially into tobacco leafs where it reaches maximum values.
   This mechanism is also supported by extremely high biological absorption ratios between Cd and tobacco leafs (11.49 and 24.98) in both Xiao-Zhu area contains anomalous concentrations of Cd and rice grain from the Tien Shan Bao area contains anomalous concentrations of Cd, Cu and Zn. (4) Corn grain from the Jiepo-Ling area bears anomalous concentrations of Zn, Cd, Cu, Mo and Ni
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    21. 3. 2008
Import date
    8. 8. 2012