Record details

Title
    Mineralogy of the Vícenice octahedrite
Statement of responsibility
    Roman Skála, Jiří Frýda, Josef Sekanina
Other titles
    Mineralogie vícenického oktaedritu
Author
    Frýda, Jiří
    Sekanina, Josef
    Skála, Roman
Language
    anglicky
Source title - serial
    Journal of the Czech Geological Society
Vol./nr.
    Vol. 45, no. 1-2
Pages
    p. 175-192
Year
    2000
Notes
    7 obr., 27 fot., 10 tab.
    České resumé
    il.
    Obsahuje bibliografické odkazy
    Zkr. název ser.: J. Czech geol. Soc.
Subject group
    asociace minerální
    difrakce rentgenová
    metamorfóza šoková
    meteority
    oxidace
Geographical name
    ČR-Morava
    Vícenice u Náměště nad Oslavou (Třebíč)
Keyword
    Mineralogy
    Octahedrite
    Vícenice
Abstract (in english)
   The iron meteorite Vicenice was recovered in October 1911 E of village Vícenice. Its original dimensions were 180x90x65 mm and weight 4650 g. Based on the bandwidth of kamacite lamellae the Vícenice iron is a medium octahedrite (Om). Chemically, this meteorite belongs to IID irons. Except kamacite and taenite, the meteorite also contains schreibersite, troilite, daubréelite, chromite and an unidentified chlorine-containing iron (hydro?) oxide. Schreibersite is encoured in several forms with distinct chemistries; one of them represents a Ni-dominant phase, which has been approved recently as a new mineral-nickelphosphide. Several troilite grains are characterized by elevated contents of chromium. Optical observations indicate that several shock-induced deformations affected the meteorite in the space. Cooling rate was estimated to be in the order of 1.5-2°C/Ma.
   X-ray powder diffraction proved goethite and lepidocrocite as main corrosion products in the weathering crust coating the meteorite
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    29. 1. 2008
Import date
    8. 8. 2012