SEM-based Quantitative Analysis of Lunar Meteorite Northwest Africa 2727
نویسندگان
چکیده
منابع مشابه
EXPOSURE HISTORY OF LUNAR METEORITE NORTHWEST AFRICA 5000. K. Nishiizumi,
Caffee, N. Vogel, R. Wieler, M. D. Leclerc, and A. J. T. Jull, Space Sciences Laboratory, University of California, Berkeley, CA 94720-7450, USA ([email protected]), Department of Physics, Purdue University, West Lafayette, IN 47907-1396, USA ([email protected]), ETH-Zürich, CH-8092, Switzerland ([email protected], [email protected]), NSF Arizona AMS Facility, University of Arizona, Tuc...
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Petrology and Mineral Compositions: The fresh, pale gray interior of this specimen has multiple shock fractures (with very minor calcite coatings) and some thin glass veinlets (Figure 2). This rock is a poikiloblastic recrystallized breccia, with larger grains of plagioclase (~70%) enclosing much smaller grains (less than 100 microns across) of pyroxene (~20%), olivine (~10%) and accessory Ti-c...
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Lunar meteorite EET 96008 is a fragmental breccia that predominantly consists of basaltic mineral clasts (0.5–2 mm), along with minor lithic fragments and breccia clasts. The matrix consists mainly of smaller mineral fragments ( 0.5 mm), bound by glassy cement, the majority of which are pyroxene and plagioclase. The pyroxene possesses extensive exsolution lamellae. These lamellae, up to 1 m in ...
متن کاملMonazite Dating of Lunar Meteorite Nwa
Introduction. According to their textural and geochemical similarity it was suggested previously that the lunar meteorite NWA 4734 could be launch paired with Antarctic Mare basalts (LAP 02205/224/226/436-03632-04841) themselves possibly paired with NWA 032/470 lunar meteorites despite their different textures (1-5). A possible clue about the pairing issue is evidently their age. Method : After...
متن کاملUnique meteorite from early Amazonian Mars: water-rich basaltic breccia Northwest Africa 7034.
We report data on the martian meteorite Northwest Africa (NWA) 7034, which shares some petrologic and geochemical characteristics with known martian meteorites of the SNC (i.e., shergottite, nakhlite, and chassignite) group, but also has some unique characteristics that would exclude it from that group. NWA 7034 is a geochemically enriched crustal rock compositionally similar to basalts and ave...
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ژورنال
عنوان ژورنال: Microscopy and Microanalysis
سال: 2019
ISSN: 1431-9276,1435-8115
DOI: 10.1017/s1431927619013199