Podrobnosti záznamu

Název
    Geology and genesis of Variscan porphyry-style gold mineralization, Petráčkova hora deposit, Bohemian Massif, Czech Republic
Autor
    Markey, Richard
    Pertold, Zdeněk
    Pertoldová, Jaroslava
    Pudilová, Marta
    Stein, Holly
    Zachariáš, Jiří
    Žák, Karel
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Mineralium Deposita
Svazek/č.
    Roč. 36, č. 6
Strany
    25
Rok
    2001
Výraz tezauru
    porphyry-style gold mineralization, gold mineralization, mineral parageneses, stable isotopes, fluid inclusions, Re-Os isotopic dating
Klíčové slovo
    Bohemian
    Czech
    Deposit
    Genesis
    Geology
    Gold
    Hora
    Massif
    Mineralization
    Petráčkova
    Porphyry-style
    Republic
    Variscan
Abstrakt (anglicky)
   The Petráčkova hora deposit mineralization is closely related to the late magmatic processes associated with the Petráčkova hora granodiorite.The gold ores occure as sheered of quartz veins and veinlets hostedby the small Petráčkova hora granodiorite stock. Gold is found mainly as free grains of >900 fineness, and is accompanied by pyrrhotite and chalcopyrite, and acessory pyrite, arsenopyrite, loellingite, molybdenite.Molybdenite has been dated by Re-Os method at 344.4+-2,8Ma.Quartz veins Q1-Q5 contain most of the gold minetalization. Isotopical and fluid inclusions data suggest folloving pT conditions (Q1-Q4 2,5 to 1,5kbar, 590-400°C; Q5 0,5-1,5kbar, ~300°C).The Petráčkova hora deposit might be an example of the reduced gold sub-type of porphyry deposit.
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
    R
Datum importu
    15. 10. 2014