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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...Euhedral ilmenite, Ti-chromite, plagioclase and merrillite in vesicles indicate vapor deposition. These...state of the former. 1. Introduction Because the Ibitira eucrite, unlike most other eucrites and howardites...described the mineralogy and track history of Ibitira, and concluded that it originated from a basalt |
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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 |
| | Journal (article/letter/editorial) |
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 |