Record details

Title
    K-poor meurigite from the Kněžská hora quarry near Těškov, western Bohemia, Czech Republic
Statement of responsibility
    Jiří Sejkora, Pavel Černý, Jiří Čejka, Jiří Frýda, Petr Odruš
Author
    Čejka, Jiří
    Černý, Pavel
    Frýda, Jiří
    Odruš, Petr
    Sejkora, Jiří, 1968-
Language
    anglicky
Source title - serial
    Neues Jahrbuch für Mineralogie. Monatshefte
Vol./nr.
    No. 6
Pages
    p. 264-278
Year
    2000
Notes
    2 fot., 3 diagr., 4 tab., 12 bibl.
    il.
    Zkr. název ser.: Neu. Jb. Mineral., Mh.
Subject group
    Barrandien
    chemismus minerálů
    fosforečnany
    kambrium-svrchní
    křivoklátsko-rokycanské pásmo
    lokalita mineralogická
    mineralogie topografická
    mřížkové parametry
    ryolit
Geographical name
    ČR-Čechy
    Těškov (Rokycany)
    USA-New Mexico
Keyword
    Bohemia
    Czech
    Hora
    K-poor
    Kněžská
    Meurigite
    Near
    Quarry
    Republic
    Těškov
    Western
Abstract (in english)
   The rare mineral meurigite was identified at the quarry Kněžská hora near Těškov, western Bohemia, Czech Republic. Meurigite forms there elongated tabular up to flattened acicular crystals, conglomeration of tiny fibres, soft hemispherical aggregates and crusts growing in druse cavities and fissures of quartz gangue. It has light wax yellow colour, some with lemon tint. Associated minerals are: dufrénite, strengite and cacoxenite. Meurigite from Kněžská hora is monoclinic, a=29.33(1), b=5.246(2), c=18.264(7) A, ß=109.40(2)°, probably with primitve unit cell. The new X-ray powder pattern and unit cell parameters for meurigite from type locality (Santa Rita mine) are given, too. When compared with meurigite from type locality, meurigite from Kněžská hora is K-poor and (CO3)2- rich phase. Its empirical formula is K0.57(Fe6.654Al0.50)ń7.15(PO4)5.23(CO3)0.81(OH)4.71 . 6,95H2O. The infrared spectra and thermogravimetric analysis of the sample studied are given
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    16. 4. 2008
Import date
    8. 8. 2012