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| 523.5'1'0981 ISBN 0-8263-0543-1 2. Meteorites—Brazil. II. Title. 80-5333 © 1980 by the University of...composition of stone meteorites. How to recognize a meteorite. Brazilian stone meteorites. 7.1. ACHONDRITES...Monomict pigeonite-plagioclase achondrites . . . Ibitira. Serra de Mage.:. 7.2. CHONDRITES. 7.2.1. H-group...Uberaba. 7.2.2. L-group chondrites . Mafra. Minas Gerais. Parana i ba. Patrimonio. Putinga. Rio Negro...chondrite . Parambu. Acknowledgments . References.^.. Meteorite index. Page 1 3 11 29 35 45 47 48 48 48 61 61 |
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| Printed in The Netherlands [5] MINERALOGY OF THE IBITIRA EUCRITE AND COMPARISON WITH OTHER EUCRITES AND...Revised version received August 5, 1976 Ibitira meteorite is interpreted as a strongly metamorphosed...variable structural state). Minor phases are 5% tridymite plates one-quarter occupied by plagioclase (An94)...rims; one grain of low-Ti-chromite enclosed in tridymite; trace troilite with kamacite Fe98Co 1.0Nio.9-...strong shock which affected the plagioclase and tridymite but not the pyroxene, (4) sufficient annealing |
 | Iizuka, Tsuyoshi, Amelin, Yuri, Kaltenbach, Angela, Koefoed, Piers, Stirling, Claudine H. (2014) U–Pb systematics of the unique achondrite Ibitira: Precise age determination and petrogenetic implications. Geochimica et Cosmochimica Acta, 132. 259-273 doi:10.1016/j.gca.2014.02.017 | Journal (article/letter/editorial) |
| com/locate/gca U–Pb systematics of the unique achondrite Ibitira: Precise age determination and petrogenetic implications...2014; available online 25 February 2014 Abstract Ibitira is an unbrecciated, equilibrated vesicular basaltic...high-precision U and Pb isotopic data for this unique meteorite. The 238U/235U value of 137.777 ± 0.013 determined...with the previously proposed thermal history of Ibitira and our closure temperature estimates for Pb diffusion...metamorphism may have been caused by burial of Ibitira lava under successive lava flows and, if so, the |
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| the total rocks and the two primitive eucrites Ibitira and Juvinas, we define as the best differentiation...study of the Ibitira meteorite by Wilkening and Anders [3] has shown that this meteorite was probably...Birck and All~gre [14]. able to us for each meteorite ranged from 1 to 5 g. The meteorites were broken...Nuevo Laredo Sierra de Mag6 Macibini 12 23 9 9 Ibitira totalrock pyroxene plagioclase Q1 Q2 26 57 14...the observation that the Rb-Sr system of this meteorite has been perturbed (see below). The age and (87Sr/86Sr)l |
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| parent rocks. Introduction As the importance of meteorite impacts as a mechanism producing lunar land forms...ACKNOWLEDGMENTS.—We are indebted to the curators of the meteorite collections in the following institutions for...used in Table 1) follow. 1. YAMATO-7307.—This meteorite, also known as Yamato(l), was collected by the...27). 2. MASSING.—The analysis shows that this meteorite is very similar in composition to Yamato-7307;...mislabelled material. 3. CHAVES.—Thin sections of this meteorite show that it is a typical polymict breccia. The |
 | Stevens, John G., Khasanov, Airat M., Miller, J. W., Pollak, Herman, Li, Zhe - Eds. (2002) Mössbauer Mineral Handbook (2nd ed.) Mössbauer Effect Data Center, Asheville, NC. | Book (edition) |
| T.Jull, Quat. Res. 53(2),131-42(2000) Ancient meteorite finds and the Earth's surface environment. (Chem... 117-33(1971) Studies of lunar plagioclases, tridymite, and cristobalite. A.M.Babeshkin, M.Pochron, Z...X-ray and Mossbauer Studies of Troilite in Iron Meteorite W.Prandl, and F.E.Wagner, Z. Kristallogr., Kristallgeom...Meteoritika 33, 113-6(1974) Study of the Sikhote Alin Meteorite by Mossbauer Spectroscopy and Electron Microprobe...35(4),143-7(1975) Phase Composition of the Krymka Meteorite According to Mossbauer Spectra (In Russian) V |
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| between the degree of '60-depletion in the bulk meteorite and oxidation state, since presumably the most...for several clasts and matrix samples from each meteorite. References: Batchelor and Sears (1989) Meteoritics...21, 1379. (3) Jungck (1982) Pure 22Ne in the Meteorite Orguei/: an attempt to characterize the carrier...acquiring TL data for 2-3 matrix samples from each meteorite, and for the following clasts: EET87513, eucrite...well defined except for a single point in each meteorite. This point always corresponds to the first dissolution |
