Podrobnosti záznamu

Název
    Anomalous PGE in Fe-Cu-As ores from the Tisová Besshi-type deposit (Bohemian Massif)
Autor
    Malec, Jan
    Pašava, Jan
    Rojík, Petr
    Vymazalová, Anna
Jazyk
    anglicky
Typ dokumentu
    článek ve sborníku
Zdrojový dokument - monografie
    Let's talk ore deposits.Proceedings of the 11th SGA Biennial Meeting, Antofagasta, Chile, 26-29 September 2011
Strany
    3
Poznámky
    Akce: 2011 ; Antofagasta, Chile
Výraz tezauru
    anomalous PGE, Tisová, Besshi type deposit, Bohemian Massif
Klíčové slovo
    Anomalous
    Besshi-type
    Bohemian
    Deposit
    Fe-Cu-As
    Massif
    Ores
    PGE
    Tisová
Abstrakt (anglicky)
   Anomalous concentrations of Pt (33 - 4740 ppb, avg. 1225 ppb) accompanied by low Pd values (2.6 - 3.7 ppb), have been detected in ore samples from the Tisová Cu deposit, considered to be of Besshi-type deposit. Pd/Ir and Pd/Pt ratios are close to those in tholeitic basalts. Mantle normalized Ni-PGE-Cu patterns in ore samples from Tisová show significant Pt and Rh enrichment when compared to Besshi deposit (Japan) and other VHMS deposits of the Iberian Pyrite Belt (e.g. Neves Corvo and Rio Tinto). The studied ore samples are characterized by the presence of pyrite, pyrrhotite, chalcopyrite, arsenopyrite, sphalerite, native Bi, jamesonite, cobaltite, willyamite, and Fe-oxides (limonite). Mineralogical and subsequent LA-ICP-MS study have not resulted in the identification of principal PGE phases. Likely, Pt occurs as Pt-Fe oxide but the presence of other PGE discrete PGM on the boundary of sulfide grains cannot be excluded.
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
    R
Datum importu
    15. 10. 2014