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PETROLOGICAL FEATURES OF A NEW UREILITE (NWA6235) FROM FEZZOU, MOROCCO

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Title
PETROLOGICAL FEATURES OF A NEW UREILITE (NWA6235) FROM FEZZOU, MOROCCO
Other Titles
유레일라이트(NWA6235)의 암석학적 특징
Authors
T. Endo
K. Nagao
Y. Sawada
D. L. Dettman
Ahn, Insu
Y. Sampei
M. Kusakabe
H. Nishido
Lee, Jong Ik
Keywords
carbon isotope; differentiated meteorite; meteorite; oxygen isotope; ureilite
Issue Date
2010
Citation
T. Endo, et al. 2010. PETROLOGICAL FEATURES OF A NEW UREILITE (NWA6235) FROM FEZZOU, MOROCCO. 국제운석학회. 국제운석학회. 2010.07.26~.
Abstract
A ureilite-like meteorite (NWA 6235), about 6cm x 5cm x 5cm and 216g, with a dark brown to black fusion crust, was collected at Fezzou, Morocco (30°55.68’N, 4°51.50’W). This study of petrographical analyses of NWA 6235 is based on microscopy, areal compositional mapping and mineral chemistry by EPMA (X-ray microanalyzer) and cathodoluminescence (CL). In addition, carbonaceous matter was analyzed using pyrolysis gas chromatography (py-GC) and mass spectrometry (py-GC/MS), and Raman icrospectorometric analysis. C-N-S elemental analysis and stable carbon and oxygen isotope analyses of powdered samples were also performed. NWA 6235 consists mainly of olivine and pigeonite with minor amounts of enstatite, augite, graphite, diamond, metallic iron, iron oxide, limonite and Fe-Cr-Ni sulfide as a mesostasis. The meteorite shows ureilite texture with triple junctions between olivine grains.
URI
http://repository.kopri.re.kr/handle/201206/8031
Conference Name
국제운석학회
Conference Place
국제운석학회
Conference Date
2010.07.26~
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