Record details

    Rare earth element patterns in garnets of the Moldanubian metamorphic rock series near Habry, W-Bohemia
Statement of responsibility
    Eva Fediuková
    Fediuková, Eva
Source title - serial
    Věstník Českého geologického ústavu (Bulletin of the Czech Geological Survey)
    Vol. 73, no. 1
    p. 75-78
    5 obr., 3 tab., 16 bibl.
    České resumé
    Zkr. název ser.: Věst. Čes. geol. Úst. (Bull. Czech geol. Surv.)
Subject group
    chemismus hornin
    moldanubikum jižních a jihovýchodních Čech
    prvky stopové
    vzácné zeminy
Geographical name
    Habry (Havlíčkův Brod)
Abstract (in english)
   A series of HP/HT rocks represented by felsic leptynite, biotite paragneiss and amphibolite crops out in the Peklo quarry near Habry. All the rock types carry abundant garnet. The composition of this mineral, strictly controlled by the chemistry of the host rock and metamorphic conditions as well, ranges from almost pure almadine in the leptynite to the proportion Fe2+: Mg:Ca approximately 1:1:1 in the amphibolite. Also the REE distribution in garnets shows considerable differences. Chondrite-normalized REE pattern of leptynite garnet revelas a pronounced positive course of the curve from the light are earth elements to heavy rare elements with distinct negative Eu-anomaly. The LaN/YbN ration in the paragneiss garnet is nearly equal to 1 and the negative Eu-anomaly, although still clear, is less pronounced than in the former case. The amphibolite garnet has the lowest HREE abundances and no Eu-anomaly.
   Fraction of REE patterns shows - aside from the influence of p-T conditions - also general dependence on both major element composition of garnet and bulk rock chemistry
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    18. 2. 2008
Import date
    8. 8. 2012