Podrobnosti záznamu

Název
    Mineralizace stříbronosných ložisek jihlavské brázdy
Údaj o odpovědnosti
    Jiří Vosáhlo, Tomáš Řídkošil
Další názvy
    Silver-rich mineralization from Jihlava ore district
Autor
    Řídkošil, Tomáš
    Vosáhlo, Jiří
Konference
    Stříbrné minerální asociace v Československu (19920609-19920611 : Donovaly, CE)
Jazyk
    česky
Zdrojový dokument - monografie
    Stříbrné minerální asociace v Československu
Strany
    s. 176-180
Poznámky
    2 s.bibl.
    Anglické resumé
Předmětová skupina
    chalkopyrit
    mineralizace
    moldanubikum západní Moravy
    pyrit
    rudy Ag
    sfalerit
    sulfidy
    tetraedrit
Geografické jméno
    Jezdovice (Jihlava)
    Jihlava
    Kamenná (Jihlava)
Klíčové slovo
    Brázdy
    Jihlavské
    Ložisek
    Mineralizace
    Stříbronosných
Abstrakt (anglicky)
   In the central part of the Bohemian-Moravian Upland, about 110 km from Prague and 80 km WNW of Brno there is a region of three old ore district: Kamenná (area of 12 km2), Jihlava (area of 40 km2) and Jezdovice (15 km2). The territory of the three ore districts studied belongs to the moldanubic zone of European variscic centralities. Moldanubic metamorphosed blocks are a part of the NEE oriented anticlinorium which has its axial part a north branch of the moldanubic pluton. In a concept by Koutek (1952), Veselý (1963) and Němec (1964b) the Jihlava ore district was considered as a typical example of the hydrothermal vein deposit. From the directional standpoint it is possible, in agreement with Koutek (1952), to divide the mineralized disjunktive structures in the territory considered into the following groups: 1. structures in direction NS or possibly NNE and NNW, 2. structures in direction E-W or possibly WNW, 3. structures in direction NW-SE, 4.
   structures in direction NE-SW or possibly ENE. The diverse character of the mineralization within particular disjunctive structures is usually proportional to the tectonic complications of the relevant structure. In the region of ore districts studied, it is possible to observe a certain variability in the chemical composition of ore minerals as well as in their relative abundance. On the basis of the zonality of the hydrothermal mineralization, represented by the character of the typomorphic minerals and their occurrence, six types of the hydrothermal mineralization were established. 1. Mineralization of type: black sphalerite enhanced amount of pyrites (pyrite, pyrrhotite, arsenopyrite with carbonates), 2. Mineralization of the type: pale or dark brown sphalerite, baryte, with carbonates, 3. Mineralization of the type: brown sphalerite+baryte+carbonates, 4. Mineralization of the type: pale sphalerite+baryte+carbonates, 5. Mineralization of the type: quartz+pyrite, 6.
   Mineralization of the type: psilomelane+chalcedony. Silver-rich mineralization is represented by tetra
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (UNM)
Zdrojový formát
    U
Datum vložení
    13. 12. 2007
Datum importu
    8. 8. 2012