Record details

    Pumpellyite-actinolite facies quartzites from the eastern cover of the Žulová pluton (NE Bohemian Massif)
Statement of responsibility
    Jacek Puziewicz, Kamilla Olejniczak, Jürgen Koepke
    Koepke, Jürgen
    Olejniczak, Kamilla
    Puziewicz, Jacek
Source title - serial
    Neues Jahrbuch für Mineralogie. Abhandlungen
    Vol. 178, no. 2
    p. 153-172
    3 obr., 2 fot., 8 tab., 3 s. bibl.
    Zkr. název ser.: Neu. Jb. Mineral., Abh.
Subject group
    chemismus minerálů
    facie aktinolitová
    facie prehnit-pumpellyitová
    klastické částice
    metamorfóza progresivní
    minerály horninotvorné
Geographical name
    Burgrabice (Polsko-jihozápad)
    Písečná (Jeseník)
    Polsko - jihozápad
    Slawniowice (Polsko-jihozápad)
    Supíkovice (Jeseník)
Abstract (in english)
   Detrital and metamorphic minerals occur in the feldspar-rich quartzites occurring in the eastern cover of the Žulová granitic pluton (northern part of the Moravo-Silesian Zone of the Bohemian Massif). The detrital minerals comprise quartz, K-feldspar, plagioclase (An 23-48) and scarce biotite. The metamorphic mineral assemblage consists of albitic plagioclase, pumpellyite, actinolite/ferroactinolite, clino-zoisite, chlorite, muscovite, titanite, graphite and optically isotropic "allophane" representing chemically a mixture of silica, alumina and iron oxides/hydroxides. The crushing of detrital plagioclase grains triggered their decomposition into pumpellyite, clino-zoisite, albitic plagioclase and, in places, muscovite. The plagioclase decomposition products are associated with actinolite/ferroactinolite and chlorite.
   The metamorphic mineral assemblage indicates sub-greenschist pumpellyite-actinolite facies; rocks belonging to this facies were not described up to now from the Moravo-Silesian Zone. The pumpellyite-actinolite metamorphism was of prograde character with pressure probably exceeding 4 kbar
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    21. 3. 2008
Import date
    8. 8. 2012