Record details

    Greigit v sedimentech mostecké pánve
Statement of responsibility
    Jiří Jansa, František Novák, Martin Šťastný
Other titles
    Greigite from the sediments in the Most Basin (Czech Republic)
    Jansa, Jiří
    Novák, František
    Šťastný, Martin
Source title - serial
    Věstník Českého geologického ústavu (Bulletin of the Czech Geological Survey)
    Vol. 73, no. 1
    p. 85-88
    2 obr., 1 fot., 1 tab., 9 bibl.
    Anglické resumé
    Zkr. název ser.: Věst. Čes. geol. Úst. (Bull. Czech geol. Surv.)
Subject group
    greigit (smythit)
    lokalita mineralogická
    minerály koexistující
    severočeská pánev
    uhlí hnědé
    vlastnosti chemické
    vlastnosti fyzikální
Geographical name
    Dolní Jiřetín (Most)
    Libkovice (Most)
    Lom (Most)
    Louka u Litvínova (Most)
    Mariánské Radčice (Most)
    Záluží (Most)
Abstract (in english)
   Greigite occurs in the Miocene claystones of the upper part of the Most Formation in the Most Basin. It is present locally in two intervals of 0.5-2 m in thickness, which are represented by irregularly distributed thin layers and minute lenticular accumulations. Greigite is accompanied frequently by siderite and rarely by bisulphides of Fe. The separated greigite is greyish black, soot-like and strongly magnetic. Its accumulations are prevailingly formed of fine-grained aggregates having different shades of greyish yellow in colour and lower reflectance in polished sections. The parameter of its cubic lattice is a= 0.9873 (2) nm. All microanalyses show a distinct excess of Fe as a result of its partial oxidation. The contents of minor elements substituing Fe in the structure of this sulphide are (in ppm): Co 428, Cu 202, Ni 2007 and Zn 585. It is an authigenic mineral formed in the stage of early diagenesis of the claystones
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    5. 8. 2008
Import date
    8. 8. 2012