TY - JOUR A1 - Geist, V. A1 - Wagner, G. A1 - Nolze, Gert A1 - Moretzki, O. T1 - Investigations of the meteoritic mineral (Fe,Ni)3P N2 - A survey is presented on some characteristic features of meteoritic (Fe,Ni)3P which is an abundant and important minor phase of most iron meteorites. This mineral (named schreibersite/rhabdite) plays a decisive role during the formation of the so-called Widmanstätten pattern. Different transmission as well as scanning electron microscopic techniques have been applied to get more precise information about the real structure of the phosphide crystals, their chemical composition and the metal distribution across the phoshide/ kamacite interface. X-ray crystal structure determinations have been performed for selected (Fe,Ni)3P - cystals from various iron meteorites (Toluca, North Chile, Watson, Orange River, Morasko, Agpalilik, Odessa, Canyon Diablo). These experiments revealed a metal ordering, i.e. for the three non-equivalent metal positions a different substitution of Fe by Ni has been found. The perfection of the brittle (Fe,Ni)3P samples differs appreciably and seems to be dependent on the thermal history of each individual meteorite. Moreover, inside Ni-rich rhabdite crystals small monocrystalline inclusions of CrN (carlsbergite) have been detected. KW - Iron meteorites KW - Schreibersite KW - Rhabdite KW - Carlsbergite KW - Structure determination KW - Metal ordering KW - EBSD KW - TEM KW - Synchrotron radiation PY - 2005 DO - https://doi.org/10.1002/crat.200410307 SN - 0023-4753 SN - 1521-4079 SN - 0232-1300 VL - 40 IS - 1/2 SP - 52 EP - 64 PB - Wiley-VCH Verlag GmbH & Co. KGaA CY - Weinheim AN - OPUS4-4431 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -