Abstract
Crystallographic preferential orientation (CPO) of metagabbro mylonite from the eastern part of Stare Mesto belt, Bohemian Massif, is investigated by means of neutron diffraction method. The experiments were performed on the KSN-2 neutron diffractometer situated at the research reactor LVR-15 in the Nuclear Research Institute, pic. Rez, Czech Republic. Based on the collected diffraction patterns, the orientation distribution function of crystalline grains is determined by Rietveld harmonic method for the principal mineral phases -amphibole and plagioclase - and used to calculate (001), (020), (021), (110), (111) (plagioclase) and (001), (111̄), (020), (110), (200) (amphibole) pole figures. Lattice parameters of the phases have been obtained from diffraction patterns of a powder specimen. Main features of the observed CPO are compared with results of electron back-scatter diffraction measurements performed formerly on the same sample and with other known data.
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