Record details

    Nanometer-scale measurements of iron oxidation states of cronstedtite from primitive meteorites
Statement of responsibility
    Thomas J. Zega, Laurence A. J. Garvie, Peter R. Buseck
    Buseck, Peter R.
    Garvie, Laurence A. J.
    Zega, Thomas J.
Source title - serial
    American mineralogist
    Vol. 88, no. 7
    p. 1169-1172
    2 obr., 1 fot., 1 tab., 33 bibl.
    Zkr. název ser.: Amer. Mineralogist
Subject group
    systém solární
Geographical name
    Kutná Hora
Abstract (in english)
   We report the first nanometer-scale measurements of the iron (III) to total iron (Fe3+ sumFe) ratios from primitive meteorites. These ratios from the matrices and fine-grained rims (FGRs) of the Murchison, Murray, and Cold Bokkeveld CM chondrites fall within a tight range, from 0.45 to 0.54 (_0.02). The measurements were made using electron energy-loss spectroscopy (EELS) on cronstedtite, which is a product of aqueous alteration early in the history of the solar system. The results indicate that the alteration of these meteorites, which display a broad range of alteration intensity, occurred under similar redox conditions and, further, that alteration likely occurred in situ on asteroidal bodies rather than in the solar nebula
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    29. 1. 2008
Import date
    8. 8. 2012