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A NEW R CHONDRITE (NWA 6236) FROM FEZZOU, MOROCCO

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Title
A NEW R CHONDRITE (NWA 6236) FROM FEZZOU, MOROCCO
Other Titles
Morocco Fezzou에서 발견된 R 콘드라이트(NWA6236)
Authors
T. Endo
Y. Sampei
Ahn, Insu
K. Nagao
Lee, Jong Ik
D. L. Dettman
M. Kusakabe
H. Ninagawa
Y. Sawada
Keywords
R chondrite; carbon isotope; chondrite; meteorite; oxygen isotope
Issue Date
2010
Citation
T. Endo, et al. 2010. A NEW R CHONDRITE (NWA 6236) FROM FEZZOU, MOROCCO. 국제운석학회. 국제운석학회. 2010.07.26~.
Abstract
An R chondrite-like meteorite (NWA 6236) was collected at Fezzou, Morocco (30°58.29’N, 4°56.99’W) in September 2005. Based on petrographical features, mineral chemistry, and oxygen isotope ratios, this meteorite shows characteristics of an R chondrite. This study of our petrographical analysis of NWA 6236 is based on microscopy and EPMA areal compositional mapping,mineral chemistry by EPMA, C, N, S abundances, stable oxygen and carbon isotopes, and the results of cathodoluminescence (CL) and thermoluminescence (TL) measurements. This meteorite (ca. 6 x 3 x 3cm, 145g) with a dark bluishgray fusion crust, exhibits an unbrecciated chondritic texture consisting of various types of chondrules and their fragments embedded in a recrystallized olivine-rich matrix. The chondrules are made up of porphyritic to cryptocrystalline olivine, barred olivine, and porphyritic to granular olivine and pyroxene. The size of chondrules varies from 0.1 mm to 0.9 mm in diameter.
URI
http://repository.kopri.re.kr/handle/201206/8033
Conference Name
국제운석학회
Conference Place
국제운석학회
Conference Date
2010.07.26~
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