Record details

Title
    Příspěvek k petrografii a mineralogii hlavních typů gabronoritických až kvarcdioritických plutonitů intruzívního shluku u Mladotic, západní Čechy
Statement of responsibility
    Ferry Fediuk, Eva Fediuková
Other titles
    Contribution to the petrography and mineralogy of main types of the gabbronoritic to quartz dioritic plutonites of the Mladotice intrusive cluster, W-Bohemia
Author
    Fediuk, František, 1929-
    Fediuková, Eva
Language
    česky
Source title - serial
    Erica
Vol./nr.
    Č. 5
Pages
    s. 3-19
Year
    1996
Notes
    3 obr., 7 tab., 11 bibl.
    Anglické resumé
    Zkr. název ser.: Erica
Subject group
    Barrandien
    chemismus minerálů
    gabro
    křemenný diorit
    minerály horninotvorné
    západočeský pluton
Geographical name
    ČR-Čechy
    Mladotice (Plzeň-sever)
Keyword
    
    Čechy
    Gabronoritických
    Hlavních
    Intruzívního
    Kvarcdioritických
    Mineralogii
    Mladotic
    Petrografii
    Plutonitů
    Příspěvek
    Shluku
    Typů
    Západní
Abstract (in english)
   The Mladotice intrusive cluster, consisting of several minor plugs, penetrates the Proterozoic volcanosedimentary complex of Western - Bohemia 65 km westward of Prague. Its general qualitative petrography has been known since more than 65 years but quantitative data on mineral as well as chemical composition were missing. The present paper brings up 8 modal and 8 chemical rock-analyses and a large set of microprobe data of olivine, orthopyroxene, clinopyroxene, several types of amphiboles, biotite, chlorite, ilmenite and plagioclase. The analyzed rock series comprises olivine gabbronorite, leucogabbronorite, uralitized gabbronorite, quartz bearing gabbrodiorite, quartz diorite and porphyric microgranodiorite. All rocks are subalcaline, mostly middle potassic, metaaluminous and calc-alkaline with partial overlaps to tholeiitic field. They form a continuous series.
   Olivine gabbronorite contains olivine Fo 58, orthopyroxene En 65 to 59, Ca, Mg rich augite, kaersutite, tschermakitic Mg-hornblende, actinolitic Mg-hornblende and actinolite, biotite, plagioclase An 66 to 52, ilmenite and pyrrhotine. The Mladotice intrusion had a high temperature character, its opx:cpx pairs equilibrated at approx. 1100°C
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    21. 3. 2008
Import date
    8. 8. 2012