Record details

Title
    Mineralogy of dumortierite-bearing abyssal pegmatites at Starkoč and Běstvina, Kutná Hora Crystalline Complex
Author
    Cempírek, Jan
    Novák, Milan
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Journal of the Czech Geological Society
Vol./nr.
    Roč. 51, č. 3-4
Pages
    12
Year
    2006
Thesaurus term
    abyssal pegmatite
    dumortierite
    Kutná Hora Crystalline Complex
    tourmaline
Keyword
    Abyssal
    Běstvina
    Complex
    Crystalline
    Dumortierite-bearing
    Hora
    Kutná
    Mineralogy
    Pegmatites
    Starkoč
Abstract (in english)
   Abyssal pegmatites from Starkoč and Běstvina are typical examples of the AB-BBe subclass pegmatites in the Bohemian Massif. The features typical for origin and evolution of both abyssal pegmatites are better preserved in the pegmatite at Starkoč, where, based on paragenetic relationships, three distinct assemblages were recognized. Plagioclase, quartz and muscovite are major minerals in the pegmatite veinlet; the most common accessory minerals include tourmaline, dumortierite, garnet, K-feldspar and kyanite, whereas only trace amounts of chrysoberyl, staurolite and several very rare accessory minerals were found. Composition of tourmaline is controlled by the two-stage evolution of the pegmatite. Strakoč and all other known pegmatites of AB-BBe subclass in the Bohemian Massif occur in the Gföhl Unit, along the easternmost border of the Moldanubicum. Pegmatite host rocks exhibit HP metamorphic conditions and low degree of MP overprint.
Contributor
    MU Brno, Přírodovědecká fakulta
Contributor code
    MU, PřF
Source format
    R
Import date
    8. 8. 2012