 | | Book | | 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...Valadares. 7.1.3. Monomict pigeonite-plagioclase achondrites . . . Ibitira. Serra de Mage.:. 7.2. CHONDRITES...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 |  | | Journal (article/letter/editorial) | | 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...En32Fs 27Wo41 and pigeonite En40Fs56Wo4) and 30% plagioclase An94 (mosaic extinction and variable structural...5% tridymite plates one-quarter occupied by plagioclase (An94) inclusions; several percent intergrowths...Fe98Co 1.0Nio.9- Euhedral ilmenite, Ti-chromite, plagioclase and merrillite in vesicles indicate vapor deposition |  | | Journal (article/letter/editorial) | | 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...Sierra de Mag6 Macibini 12 23 9 9 Ibitira totalrock pyroxene plagioclase Q1 Q2 26 57 14.5 4.5 3.2 165...70929 ± ± ± ± ± ± Bereba total rock plagioclase 1 plagioclase 2 (handpicked) pyroxene 1 pyroxene 2 (handpicked) |  | 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 |  | MCCOY, T, KETCHAM, R, WILSON, L, BENEDIX, G, WADHWA, M, DAVIS, A (2006) Formation of vesicles in asteroidal basaltic meteorites. Earth and Planetary Science Letters, 246 (1) 102-108 doi:10.1016/j.epsl.2006.04.002 | Journal (article/letter/editorial) | | vesicular members (Ibitira, Pecora Escarpment (PCA) 91007, and Yamato 981651; [2,3]). Ibitira is the earliest-recovered...vesicular basalts are primarily based on studies of Ibitira, which exhibits abundant, small vesicles set in...in a fine-grained, granoblastic matrix. Ibitira was suggested to have formed in a lava flow, by analogy...vesicles of Ibitira formed during later crustal metamorphism [8,9]. Eucrites like Ibitira offer promise... the low abundance of siderophile elements in Ibitira contrasts with elevated levels in lunar impact |  | | Journal (article/letter/editorial) | | t rock-forming minerals such as olivine and plagioclase feldspar are n o t observed. T h e r e is no...observations. Through an exhaustive comparison with meteorite spectra, Gaffey (1974) confirmed The first class...terrestrial mineral classes and basaltic aehondrite meteorite types. acceptable. We indicate on Fig. 3 the...basaltic achondrite meteorite types. Among both mineral types (pigeonites) and meteorite types (eucrites)...silicates that m a y be present include olivine and plagioclase feldspar, both of which have broad ir absorptions |  | | Journal (article/letter/editorial) | | Mineralogic effects include the transition of plagioclase into amorphous diaplectic glass at pressures...rock during its original crystallization. For meteorite samples, many of which have undergone significant...effects of shock on pyroxene, which is a common meteorite constituent for which the redox ratio has been...bodies other than the Earth is based primarily on meteorite samples and lunar surface samples that have surely...resetting should be used for fO2 measurements of meteorite samples. Comparisons with Meteoritic Pyroxenes |  | | Report (issue) | | analyses of virtually all the known pyroxene-plagioclase achondrite meteorites and a discussion of the...A. Nelen . . . by Brian Mason T H E PYROXENE-PLAGIOCLASE ACHONDRITES, by Brian Mason, Eugene Jarosewich...parent rocks. Introduction As the importance of meteorite impacts as a mechanism producing lunar land forms...varieties: (1) "hard" trap which has euhedral plagioclase phenocrysts with strong oscillatory zoning, often...trap. Major minerals in both textural types are plagioclase (An 50-70) 33%-48%, clinopyroxene (augite ± pigeonite) |  | | Journal (article/letter/editorial) | | equilibrium distribution in silicate phases; meteorite weathering; fusion crust Received: 14 January...The authors studied two falls: Novo Urei (this meteorite gave the name “ureilites” for the group of primitive...82506, Elephant Moraine (EET) 87517, EET 87511, Meteorite Hills (MET) A78008, and ALHA77257. The room temperature...and Martian Meteorites) 4 of 49 The Zakłodzie meteorite, an ungrouped enstatite-rich achondrite, was studie...fits with different components and Zakłodzie meteorite, an ungrouped enstatite-rich achondrite, was studied |  | | Book | | Weisberg, M. K. Systematics and evaluation of meteorite classification / M. K. Weisberg, T. J. McCoy,...– 2014. – P. 373. 3. Rubin, A. Mineralogy of meteorite groups / A. Rubin // Meteoritics & Planetary Science...investigation of natural troilite from the Agpalilik meteorite / O. Kruse, T. Ericsson // Physics and Chemistry...52. Wasilewski, P. 433 Eros: Problems with the meteorite magnetism record in attempting an asteroid match...N. S. Magnetic properties of the Chelyabinsk meteorite: Preliminary results / N. S. Bezaeva, D. D. Badyukov |  | 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...12, 159-66(1971) Oxidation state of iron in plagioclase from lunar basalts. 13 Mineral Handbook Code...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 |  | | Journal (article/letter/editorial) | | between the degree of '60-depletion in the bulk meteorite and oxidation state, since presumably the most...Bogard, 1990). According to Hewins (1990), the plagioclase in these meteorites is in diverse forms; normal...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 |
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