 | Prinz, M., Keil, K., Hlava, P.F., Berkley, J.L., Gomes, C.B., Curvello, W.S. (1977) Studies of Brazilian meteorites. Earth and Planetary Science Letters, 35 (2) 317-330 doi:10.1016/0012-821x(77)90134-0 | Journal (article/letter/editorial) | | R I T E S , III. ORIGIN AND HISTORY OF THE ANGRA DOS REIS ACHONDRITE M. P R I N Z Department of Mineral...87131 (USA} C.B. G O M E S Instituto de Geociencias, Universidade de Sao Paulo, Sao Paulo (Brasil) and W...W.S. C U R V E L L O Museu Nacional, Rio de Janeiro (Brasil) Received November 12, 1976 Revised version...version received March 14, 1977 The Angra dos Reis meteorite fell in 1869 and is a unique achondrite. It...7Ab 1.7Or0.4) which are phases reported in a meteorite for the first time, and plagioclase (An86.0), |  | | Journal (article/letter/editorial) | | and Sahara 99555) are composed predominately of anorthite, Al-Ti diopside-hedenbergite, and Ca-rich olivine...olivine, except for the type specimen, Angra dos Reis, which is composed almost entirely of Al-Ti diopside-hedenbergite...have spectral properties very different from Angra dos Reis. These newly measured angrites all have broad...characteristic of some clinopyroxenes. The spectrum of Angra dos Reis has the characteristic 1 and 2 µm features...et al. 2003). These vestoids link Vesta to the meteorite-delivering 3:1 resonance and could be impact-derived |  | | Book | | 523.5'1'0981 ISBN 0-8263-0543-1 2. Meteorites—Brazil. II. Title. 80-5333 © 1980 by the University of...recognize a meteorite. Brazilian stone meteorites. 7.1. ACHONDRITES . 7.1.1. Fassaite achondrite. Angra dos Reis...Reis . 7.1.2. Augite-olivine achondrite . Governador Valadares. 7.1.3. Monomict pigeonite-plagioclase...e achondrites . . . Ibitira. Serra de Mage.:. 7.2. CHONDRITES. 7.2.1. H-group chondrites. Avanhandava.... Itapicuru Mirim . Macau. Marflia. Sao Jose do Rio Preto. Sete Lagoas. Uberaba. 7.2.2. L-group chondrites |  | | Journal (article/letter/editorial) | | Abstract-The partitioning of REE and Sr among anorthite, fassaitic pyroxene, and synthetic melts similar...calculated by inverting natural pyroxene and anorthite cores from LEW 86010 using partition coefficients...between the natural mineral cores at the time the meteorite crystallized, and (2) lack of subsequent subsolidus...fractional crystallization. The observed variation of DE”/& withf02 for pyroxene and plagioclase was combined...elements. The original angrite, Angra dos Reis (ADOR), fell in Brazil in 1869. Klaus Keil organized a |  | ABDU, Yassir A., SCORZELLI, Rosa B., VARELA, Maria E., KURAT, Gero, AZEVEDO, Izabel de Souza, STEWART, Silvana J., HAWTHORNE, Frank C. (2009) Druse clinopyroxene in D'Orbigny angritic meteorite studied by single-crystal X-ray diffraction, electron microprobe analysis, and Mössbauer spectroscopy. Meteoritics & Planetary Science, 44 (4) 581-587 doi:10.1111/j.1945-5100.2009.tb00753.x | Journal (article/letter/editorial) | | org Druse clinopyroxene in D’Orbigny angritic meteorite studied by single-crystal X-ray diffraction, electron...SCORZELLI2, Maria E. VARELA3, Gero KURAT4, Izabel de Souza AZEVEDO2, Silvana J. STEWART5, and Frank C...Brasileiro de Pesquisas Físicas, Rua Xavier Sigaud 150, 22290-180 Rio de Janeiro, Brazil 3Complejo Astronómico...5IFLP, CONICET, Depto. De Física, Facultad de Cs. Exactas, Universidad Nacional de La Plata, Argentina *Corresponding...D’Orbigny. INTRODUCTION D’Orbigny is an angrite meteorite found in the Buenos Aires province of Argentina |  | Kurat, G., Varela, M.E., Brandstätter, F., Weckwerth, G., Clayton, R.N., Weber, H.W., Schultz, L., Wäsch, E., Nazarov, M.A. (2004) D’Orbigny: A non-igneous angritic achondrite?. Geochimica et Cosmochimica Acta, 68 (8) 1901-1921 doi:10.1016/j.gca.2003.10.016 | Journal (article/letter/editorial) | | Postfach 417, A-1014 Vienna, Austria CONICET—Dept. de Geologia, Universidad Nacional del Sur, 8000 Bahia...these spheres (sizes from ⬍ 1–30 mm) olivine-anorthite intergrowths precipitated forming compact shells...abundant large open space between the olivine-anorthite intergrowths. The aggregate also included previously...metasomatic granoblastic rocks (LEW 86010, Angra dos Reis?) and aggregates (D’Orbigny). In addition,...chondrites. U-Pb, Th-Pb and Pb-Pb ages for Angra dos Reis and LEW 86010 are between 4.54 and 4.5578 Ga |  | | Journal (article/letter/editorial) | | (formerly called fassaite), calcic olivine, and anorthite. Minor and accessory phases include kirschsteinite...an angrite, the type meteorite that fell into the Bay of Angra dos Reis, Brazil, at about 5:00 a.m. in...by the ADORABLES (1976), the members of the Angra dos Reis Consortium, of the only angrite known at the...fall had been observed by a local judge and the meteorite weighing ∼1500 g was recovered by a diver from...Plutonic angrites Date of fall/find Location Angra dos Reis (stone)a LEW 86010 NWA 2999b NWA 3158b NWA |  | | Journal (article/letter/editorial) | | 1998 April 21) Abstract-Olivine in the angritic meteorite Lewis Cliff (LEW) 86010 contains abundant exsolution...1994). The group consists of Angra Dos Reis (ADOR), which fell in Brazil in 1869 and was described by... the Antarctic angrites contain very Na-poor anorthite (e.g., Delaney and Sutton, 1988; Goodrich, 1988;...display a wide range of thermal histories. Angra Dos Reis lies at one extreme. Olivines and pyroxenes...were allocated from LEW 86010 by the Antarctic Meteorite Working Group and supplied by L. Nyquist at the |  | | Journal (article/letter/editorial) | | revisedform August 29, 1990) Abstract-The angrites Angra dos Reis, LEW86010, and LEW87051 are petrologically...angrites have fractionated Ca/Al ratios, with Angra dos Reis exhibiting the most extreme ratio (3.1 X CI)...presence of significant cumulus material. For Angra dos Reis, cumulus material may be the cause of the high...and LEW8705 1 show similar patterns, while Angra dos Reis has both greater enrichments in these elements...in Angra dos Reis remains obscure. The differences between the LEW860 IO-LEW8705 1 duo and Angra dos |  | | Book | | America 123 Rogelio Daniel Acevedo Centro Austral de Investigaciones Científicas Tierra del Fuego Argentina...Argentina Víctor Manuel García Centro Austral de Investigaciones Científicas Tierra del Fuego Argentina...the Centro Austral de Investigaciones Científicas (CADIC) and the Consejo Nacional de Investigaciones Científicas.... . . . . . . . . . . . . . . . . . 35 37 4 Brazil. . . . . . . . . . . . . . . . . . . . . . . ....to reach to the Earth’s surface it is called a meteorite. So meteorites are small solid masses coming from |  | | Journal (article/letter/editorial) | | 559-4.565 Ga Pb-Pb ages reported for the Allende meteorite [5,6], reflect the major chemical changes associated...[7-11] and Angra dos Reis [12-15]. Radiometric age data for the Angra dos Reis meteorite are particularly...Allende meteorite, Angra dos Reis has the most primitive ~7Sr/S6Sr [13] observed in any meteorite, serving...there is little or no correlation between the anorthite content of the plagioclase and the M g / F e of...have evolved from the value found for the Angra dos Reis meteorite (ADOR: 87Sr/S6Sr = 0.69892 [13]) in 150 |  | | Journal (article/letter/editorial) | | chromium isotopic studies of the LEW86010 and Angra dos Reis meteorites and the chronology of the angrite...systematics. INTRODUCTION Four angrite meteorites-Angra dos Reis (ADOR), LEW86010, LEW87051, and Asuka 881371...ancient meteorites and made it the subject of the Angra dos Reis Consortium (Keil, 1977). The U-Pb ages, Sm-Nd...was allocated to the McKay consortium by the Meteorite Working Group. Large fragments were broken with...chromium isotopic studies of the LEW86010 and Angra dos Reis meteorites into plagioclase-, pyroxene-, and |  | Floss, Christine, Crozaz, Ghislaine, McKay, Gordon, Mikouchi, Takashi, Killgore, Marvin (2003) Petrogenesis of angrites. Geochimica et Cosmochimica Acta, 67 (24) 4775-4789 doi:10.1016/s0016-7037(03)00310-7 | Journal (article/letter/editorial) | | Bunkyo-ku, Tokyo 113-0033, Japan 4 Southwest Meteorite Laboratory, P.O. Box 95, Payson, AZ 85547, USA...differ from those of the other angrites. This meteorite seems to have crystallized from a different source...recently been reported (Jambon et al., 2002). Angra dos Reis is dominated by megacrysts of the clinopyroxene...abundant olivine (including kirschsteinite) and anorthite in addition to clinopyroxene (McKay et al., 1995a;...data further emphasize the distinct nature of Angra dos Reis. Crozaz and McKay (1990) carried out detailed |  | | Journal (article/letter/editorial) | | this low ratio to galactic nucleosynthesis and meteorite age dating are briegy discussed. INTRODUCIlON...initial ‘&Pu abundance in the solar system and the meteorite ‘“Pu chronometer have been plagued by the lack...et al. (1969a) on the whitlockite of the same meteorite (0.035)-implying Pu-U fractionation. Secondly...nebula processes. A diverse senting data from Angra dos Reis (AdoR) which suite of samples gave 2”Pu/Nd...the relative Ds for REEs and whit&kite from Angra dos Reis, melilite from tend to be less variable [see |  | | Journal (article/letter/editorial) | | using 244Pu/150Nd ratios are as old as that of Angra dos Reis, reflecting their early formation. On the other...mineralogical similarities to two plutonic angrites, Angra dos Reis and Lewis Cliff (LEW) 86010 (Kuehner et al...of Al-Ti-bearing diopside, calcic olivine, and anorthite (e.g., Mittlefehldt et al. 2002; Keil 2012; Kleine...of any other meteorite group, indicating that the angrites are an independent meteorite group (Greenwood...1997; Miura et al. 2004; Busemann et al. 2006). Angra dos Reis (hereafter AdoR) has been used as an anchor |  | MARKOWSKI, A, QUITTE, G, KLEINE, T, HALLIDAY, A, BIZZARRO, M, IRVING, A (2007) Hafnium–tungsten chronometry of angrites and the earliest evolution of planetary objects. Earth and Planetary Science Letters, 262 (1) 214-229 doi:10.1016/j.epsl.2007.07.035 | Journal (article/letter/editorial) | | the more slowly cooled angrites (NWA 2999, Angra dos Reis, LEW 86010, average age: 4557.7± 0.2 Ma) reflect...address: Laboratoire des Sciences de la Terre, CNRS/ENS Lyon/Univeristé de Lyon, 46 allée d’Italie, 69364...2004), whereas the ‘slowly cooled’ angrites (Angra dos Reis — AdoR, LEW 86010, NWA 2999) exhibit metamorphic...al., 2002) but can also be used to determine meteorite ages. Hafnium-182 decays to 182W with a half-life...NWA 2999 and two whole-rock fractions from each meteorite) have been measured for their Hf and W concentrations |  | | Journal (article/letter/editorial) | | The Netherlands [CLI Rare earth elements in Angra dos Reis and Lewis Cliff 86010, two meteorites with...measurements in merrillite and fassaite of Angra dos Reis (ADOR). The rare merrilfite is highly enriched...melt whose composition is close to that of the meteorite bulk composition. The ADOR melt had higher REE...processes. 1. Introduction The A n g r a dos Reis ( A D O R ) meteorite was, until recently, the only k n o...achondrites (BABI) [2] a n d this indicates that the meteorite was formed from p a r e n t material that was |  | | Journal (article/letter/editorial) | | matrix is less radiogenic than that of the whole meteorite, whereas lead in Ca- and Al-rich chondrules and...might correspond to the agglomeration age of the meteorite and a time of probably later disturbance, respectively...inclusions is similar to the initial ratio of the Angra dos Reis achondrite (PAPANASTASSIOU, Thesis, 1970)...in the type III carbonaceous chondrite, Pueblito de Allende. (e.g. LORD, 1965; LARIMER, 1967; LARIMER...represent the and verified PATTERSON’S (1955) meteorite age. Fur- early condensates of the cooling solar |  | | Journal (article/letter/editorial) | | Nous décrivons un échantillon de diopside violacé provenant du sud de l’île de Baffin, au Nunavut, dans l’Arctique...l’Arctique canadien, prélevé d’une lentille de calc-silicates et associé à marialite, pargasite, phlogopite...massifs de grains équidimensionnels. Un plan de séparation (001) est évident, mais les plans de clivage...clivage sont subtiles. Les indices de réfraction sont n␣ 1.670(1), n 1.675(1), et n␥ 1.695(1), avec 2VZ égal...n’y a aucun pléochroïsme. La densité calculée est de 3.30 g/cm3. Les paramètres réticulaires ont été déterminés |  | Marks, N.E., Borg, L.E., Hutcheon, I.D., Jacobsen, B., Clayton, R.N. (2014) Samarium–neodymium chronology and rubidium–strontium systematics of an Allende calcium–aluminum-rich inclusion with implications for 146Sm half-life. Earth and Planetary Science Letters, 405. 15-24 doi:10.1016/j.epsl.2014.08.017 | Journal (article/letter/editorial) | | melilite, clinopyroxene (Al, Ti-rich diopside), and anorthite – exhibit chemical equilibrium (e.g. Simon et...vol% melilite, 46 vol% clinopyroxene, <2 vol% anorthite, and ∼6 vol% secondary phases (Beckett, 1986;...primarily crystalline clinopyroxene, melilite, and anorthite with included euhedral spinel. Field of view is...fraction consists primarily of melilite with minor anorthite and secondary minerals; 2) the d > 3.26 g/cm3...melilite fraction consists of melilite with minor anorthite, and 6) the fines fraction consists of a split |  | | Journal (article/letter/editorial) | | CaTi3+AlSiO6, a new pyroxene from the Allende meteorite Chi Ma* and GeorGe r. rossMan Division of Geological...Al-rich refractory inclusions from the Allende meteorite. The mean chemical composition determined by electron...Ti-rich pyroxene, refractory inclusion, Allende meteorite, carbonaceous chondrite introduCtion During a...nano-mineralogical investigation of the Allende meteorite (a CV3), Ti-rich pyroxenes were observed in Ca-...in honor of his fundamental contributions to meteorite research. Type material (Caltech Section Allende12 |  | | Journal (article/letter/editorial) | | relatively low amounts of fission Xe and Kr in this meteorite class. Therefore, diogenites are wellsuited for...meteorites relative to a standard meteorite, such as Angra dos Reis, whose formation time is 4557.8 Ma...EXPERIMENTAL PROCEDURE AND RESULTS Typically meteorite samples of 0.1-1.5 g without fusion crust were...gas analyses are given in Tables Al and A2. The meteorite samples were heated in vacuum at 90°C for-10 days...Tatahouine may be that orthopyroxene, and not anorthite is the main mineral of diogenites. Furthermore |  | Hwang, Shyh-Lung, Shen, Pouyan, Chu, Hao-Tsu, Yui, Tzen-Fu, Varela, Maria-Euginia, Iizuka, Yoshiyuki (2019) New minerals tsangpoite Ca5(PO4)2(SiO4) and matyhite Ca9(Ca0.5□0.5)Fe(PO4)7 from the D'Orbigny angrite. Mineralogical Magazine, 83 (2) 293-313 doi:10.1180/mgm.2018.125 | Journal (article/letter/editorial) | | Sinica, Taipei, Taiwan, ROC 5 Instituto de Ciencias Astronómicas de la Tierra y del Espacio (ICATE) Avenida... were identified from the D'Orbigny angrite meteorite by electron probe microanalysis, electron microscopy...Ca-merrillite, were identified from the D'Orbigny angrite meteorite in this study. Angrites are a small group of achondritic...2002; Keil, 2012). Angrites consist mainly of anorthite, olivine, Al-Ti augite, kirschteinite, as well... was reported in plutonic angrites such as Angra dos Reis (Prinz et al., 1977), LEW 86010 (Mckay et al |  | | Journal (article/letter/editorial) | | supported by NSF grant EAR 76-01146. THE SHAW METEORITE: EVIDENCE FOR AN IGNEOUS ORIGIN J.L. Berkley...Johnson Space Center, Houston, TX 77058 The Shaw meteorite has Lgroup chondritic bulk chemistry and mineralogy...recrystallization, support an igneous origin for the Shaw meteorite. Data are presently insufficient to determine...million years in one fragment of the Dhajala meteorite have been measured. The variation of 54Mn and...indicate that the preatmospheric size of the meteorite was at least about a ton. The activity due to |  | | Journal (article/letter/editorial) | | was used: an equimolar afbite (Ab, NaAlSi~Os)-anorthite (An, CaAl,Si,Os) gfass was spiked to _ 20 ppm...composition of 2 intermediate diopside (CaMgSi,Ob)- I anorthite (CaAlzSi20s), molar proportions, was prepared...chronology. These data and their application to Angra dos Reis will be published separately. DOWTY(1977) suggests...Assoc. %A, 20-25. DOWTYE. (1977) Phosphate in Angra dos Reis: Structure and composition of the Ca3(P04)2...GROSSMANL. (1976) Trace elements in the Allende meteorite-1 coarse-grained, Ca-rich inclusions. Geochim |
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