Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Nolze, G. Articles by Geist, V. Search for Related Content GeoRef GeoRef Citation

Orientation relationships of carlsbergite in schreibersite and kamacite in the north Chile iron meteorite

¹ Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany
² Institute for Mineralogy, Crystallography and Materials Science, University of Leipzig, Scharnhorststrasse 20, 04275 Leipzig, Germany
³ Institute of Geology, Academy of Sciences of the Czech Republic, Rozvojová 135, CZ-16502 Prague, Czech Republic

^* E-mail: gert.nolze{at}bam.de

The crystallographic orientation of carlsbergite (CrN) in the north Chile meteorite (hexahedrite) was investigated using electron backscatter diffraction and transmission electron microscopy. These studies examined the CrN crystals in the rhabdites (idiomorphic schreibersite) and in kamacite. It was found that the CrN crystals embedded in rhabdite show a number of different orientation relationships with the host crystals. These orientations can be explained based on the lattice dimensions of both coexisting crystalline materials. It was also found that both carlsbergite and kamacite are characterized by a high dislocation density (10⁹ cm^–2) while rhabdite is free of dislocations. It is supposed that in spite of the deformed metallic matrix, a general connection between the orientation relation of all the phases involved exists.

KEYWORDS: EBSD, phosphides, carlsbergite, orientation relationship, iron meteorites