 | Keil, Klaus, Ntaflos, Th., Taylor, G.J., Brearley, A.J., Newsom, H.E., Romig, A.D. (1989) The Shallowater aubrite: Evidence for origin by planetesimal impacts. Geochimica et Cosmochimica Acta, 53 (12) 3291-3307 doi:10.1016/0016-7037(89)90108-7 | Journal (article/letter/editorial) | | 1989 Pergamon Press pk. Printed inU.S.A. The Shallowater aubrite: Evidence for origin by p~anetesim~l...(2.5), metallic Fe,Ni (3.3), troilite (2.9), schreibersite (0.4), weathered opaques (8) and traces of niningerite...oldhamite. Conclusions: 1. Shallowater is of igneous origin. 2. Shallowater could not have formed by internal...Instead, Shallowater appears to be a sample of yet a fourth enstatite-type asteroid. 3. Shallowater experienced...history suggests an equally unusual origin for Shallowater, as follows: A completely or partly molten asteroid |  | | Journal (article/letter/editorial) | | METAL AND SCHREIBERSITE IN MAYO BELWA, AN ENSTATITE ACHONDRITE A.L. Graham Department ofMineralogy British...(Natural History) London SW7 5BD The Mayo Belwa meteorite (an aubrite} contains discrete metal grains ranging...to 25 pm across. Intergrowths of metal and schreibersite also occur. These phases are distributed heterogeneously...heterogeneously throughout the meteorite and are present both in the fine-grained matrix and within silicate...low Si metal to be within enstatite crystals. Schreibersite (8-14.4% Ni) occurs as isolated grains or associated |  | | Journal (article/letter/editorial) | | and the presencteof sinoite indicate that the meteorite was formed under strongly reducing conditions...conditions. However, among the various stone meteorite classes are two which were formed in an even higher...the meteorite aa a veined crystalline chondrite: htwwver. Xf,4sow (I!~i-li listed the meteorite properly...chemically analyzed upatitc were used to analyze the schreibersite. The analyses of sinoitc? were porformod wit...st.andards to determinr thcl graphite in t,he meteorite. The quantitative data. were corrected for wavelength |  | | Journal (article/letter/editorial) | | Printed in USA Igneous History of the Aubrite Parent Asteroid: Evidence from the Norton County Enstatite...University of New Mexico, Albuquerque, NM 87131, USA ·Present address: Institute of Physical and Chemical...Abstract- We studied numerous specimens of the Norton County enstatite achondrite (aubrite) by optical microscopy...Our main conclusions are the following: 1. Norton County is a fragmental impact breccia, consisting of a...both igneous and impact melt origin. 2. The Norton County precursor materials were igneous rocks, mostly |  | | Journal (article/letter/editorial) | | NASA-JSC, 2101 NASA Parkway, MS KR, Houston, TX 77058, USA c University of Alberta, Department of Earth and...32310, USA e Jacobs Technology, E.S.C.G., Mail Code JE23, 2224 Bay Area Blvd, Houston, TX 77058, USA Received...1986; Fogel et al., 1988). The Mt. Egerton and Shallowater meteorites are anomalous compared to the other...Keil, 2010). The anomalous enstatite achondrite Shallowater has been assigned to a different parent body than...body, is suggested for the anomalous enstatite meteorite Mt. Egerton based on mineral chemistry and oxygen |  | Lorenzetti, S., Eugster, O., Busemann, H., Marti, K., Burbine, T.H., McCoy, T. (2003) History and origin of aubrites. Geochimica et Cosmochimica Acta, 67 (3) 557-571 doi:10.1016/s0016-7037(02)01085-2 | Journal (article/letter/editorial) | | Copyright © 2003 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/03 $22.00 ⫹ .00 Pergamon...92093-0317, USA 3 Smithsonian Institution, Dept. of Mineral Sciences MRC NHB-119, Washington DC 20560, USA (Received...exposure (CRE) age of Norton County, the first measured stony meteorite (Begemann et al., 1957), yields...longest currently known exposure time of a stone meteorite. Gaffey et al. (1992) suggested a link between...evidence for a planetesimal impact in the Shallowater meteorite also are indicative of regolith processes |  | | Journal (article/letter/editorial) | | University of Hawaii at Manoa, Honolulu, HI 96822, USA a r t i c l e in fo abstract Article history:...on at least two separate parent bodies, the Shallowater parent body and, for all other aubrites, on the...alert to the potential discovery of a genuine meteorite from Mercury which, superficially, should resemble...and, if true, a meteorite from Mercury should not resemble any currently known meteorite type. & 2010 Elsevier...non-brecciated aubrites Shallowater (Foshag, 1940; Keil et al., 1989), LAP 02233 (Antarctic Meteorite Newsletter, |  | | Journal (article/letter/editorial) | | Houston, Texas 77204–5007, USA 2 NASA-Lyndon B. Johnson Space Center, 2101 NASA Parkway, Houston, Texas 77058...77058, USA 3 Department of Earth and Atmospheric Sciences, University of Alberta, 1-26 ESB, Edmonton, Alberta...less than chondrites, with the exception of the Shallowater and Mt. Egerton samples. While most aubrites...highly reducing conditions compared with other meteorite groups (IW-6 to IW-8; e.g., Mittlefehldt et al...isotope systems yield different results. Ages for Shallowater (I-Xe age: 4.563 ± 0.001 Ga; Gilmour et al. 2006) |  | | Journal (article/letter/editorial) | | (1989) © Meteoritical Society, 1989. Printed in USA Enstatite meteorites and their parent bodies* KLAUS...University of New Mexico, Albuquerque, New Mexico 87131 USA (Received 10 August 1989; accepted in revisedform...Aubrites represent samples from a third enstatite meteorite parent body. 3. The aubrite parent body may have...plagioclase than known enstatite chondrites. 5. Shallowater, the only non-brecciated aubrite, does not appear...Instead, Shallowater may be a sample from yet a fourth enstatite meteorite parent body. 6. Shallowater experienced |  | | Book | | ADDIE D. NININGER A Publication of the American Meteorite Museum Winslow, Arizona . 1950 Astronomical...to the manner in which it has come into being. Meteorite collections are of value in proportion as they...and college officials, teachers, and students; county agents and farm organizations; editors, newscasters...George D. and Ruth M. Thompson of the American Meteorite Museum staff for their assist ance in compiling...in its twenty-seventh year. In some ways, the meteorite collection of H. H. and Addie D. Ninin ger differs |  | | Book | | obtain a panorama of the scope and substance of meteorite research. I endeavored to remedy this situation...not exhaustively discussed—the great upsurge in meteorite research along many new lines in recent years...and conservation of meteoritic material. Every meteorite is to some degree unique; and meteorites, unlike...I not been favored bv the curatorship of the meteorite collection of The American Museum of Natural History...Chicago Natural History Museum, the Nininger Meteorite Collection (Arizona State University, Tempe), |  | | Journal (article/letter/editorial) | | for the presence of disorderedenetatite. EIG~ meteorite falls and one find have been classified as enstatite...aubrites, after the Aubres meteorite, or as bustites, from the Bustee meteorite. The mineralogy tlnd bulk...markedly similar and distinct from any other meteorite class. The major mineral present in each of these...Cumberland Falls Khor Temiki Norton County Pena Blanca Spring Pesyanoe Shallowater 0.8 U.S.A. India U.S.A. Sudan...troilite and ferromagnesian alabandite in Norton County (KEZ and FR~DRIKSSON, 1963) ; and MgS in Pesyanoe |  | | Journal (article/letter/editorial) | | one EH impact melt) relative to the Shallowater reference meteorite (4562.3 ± 0.4 Ma, all errors are 1r)...Ma negative sign indicates ages younger than Shallowater) agree well with data of other EL6 chondrites...substantial variation even within an individual meteorite (e.g. Birck and Allégre, 1988; Wadhwa et al....53 Mn/55Mn-ratios in sulfides within individual meteorite specimens of EL 3 chondrites that are equivalent...2008; relative to absolute age of Shallowater reference meteorite of 4562.3 ± 0.4 Ma, Gilmour et al. |  | | Journal (article/letter/editorial) | | 8 (2000) 0 Meteoritical Society, 2000 Printed in USA The oxygen-isotopic record in enstatite meteorites...of brecciation and interaction between other meteorite types; for the other three, similar scenarios...INTRODUCTION In terms of 0-isotopic composition, meteorite chemical groups define distinct fields and mixing...and two melted groups (aubrites and the Shallowater meteorite). Meteorites from these four bodies are...that could indicate their interaction with other meteorite types. Earlier work (Clayton et al., 1984) produced |  | | Journal (article/letter/editorial) | | University of California, Los Angeles, CA 90095-1567, USA a r t i c l e i n f o Article history: Received...Aubrites Shock effects Asteroidal parent bodies Meteorite breccias Impact melting Sinoite a b s t r a c...impact-melt globules and spherules. No single meteorite possesses all of these features, although many...main REE carrier in enstatite meteorites. The Shallowater aubrite can be modeled as an impact-melt rock...history; it could be from the same parent body as Shallowater. Many aubrites contain large pyroxene grains |  | | Journal (article/letter/editorial) | | Louis, One Brookings Drive, St. Louis, MO 63130, USA b Department of Earth and Planetary Sciences, Harvard...University, 20 Oxford Street, Cambridge, MA 02138, USA c Department of Earth Sciences, Durham University...and EL chondrites, aubrites (main group and Shallowater) and the Happy Canyon impact melt. We have also...(d56Fe = 0.170 ± 0.189&; 2 SD; n = 6), while Shallowater is, isotopically, relatively heavy (d56Fe = 0...heavy Fe isotope-enriched core, whilst the Shallowater meteorite is most likely from a different parent body |  | | Book | | METEORITICS H . H . Nininger DIRECTOR , AMERICAN METEORITE MUSEUM The University of Denver Press Science...College , Princeton University , the Uni versity of Texas , and the private collections of Stuart H . Perry...RELATIONS THE PLAINVIEW METEORITE SHOWER THE KIOWA COUNTY METEORITES METEORITE CRATERS A COMPOSITE SWARM...METEORITES AND THE MOON 280 TEKTITES 297 GREAT METEORITE COLLECTIONS 309 PROPOSED NATIONAL INSTITUTE OF...accumulation of materials and field data , the meteorite - minded layman will continue to play a most im |  | | Book | | Professor of Chemistry and Geology Director, Nininger Meteorite Collection Arizona State University JOHN WILEY...Chemistry and Geology, Director of: the Nininger Meteorite Collection, Arizona State University, Tempe, Arizona...announced the transfer of the outstanding Nininger Meteorite Collection to Arizona State University. Throughethe...the National Science Foundation, the Nininger Meteorite Collection was established primarily for purposes...(minerals The of meteorites) relationship of and meteorite Moore (achondrites), studies to the Earth |  | | Journal (article/letter/editorial) | | CARBONACEOUS-CHONDRITE INCLUSIONS FROM THE KAPOETA METEORITE: EVIDENCE FOR THE EXISTENCE OF NANODIAMONDS WITH...Waterloo, ON, Canada. Kapoeta is an achondrite meteorite that belongs to the howardite group, which along...nanodiamonds in CC material from the Kapoeta meteorite by Fourier-transform infrared (FTIR) and Raman...nanodiamonds and amorphous carbon found in this meteorite. References: [1] Zolensky M. E. et al. 1996. Meteoritics...Science, Pennsylvania State University – DuBois, USA. Email: abreu@psu.edu. Introduction: Numerous studies |  | | Journal (article/letter/editorial) | | University of Chicago, Chicago, Illinois 60637, USA s u MMARY. Pertinent general properties of the planets...' In spite of numerous historical records of meteorite falls, a century of scientific scepticism about...in meteorites. White inclusions of the Allende meteorite carry the melilite, spinel, diopside, and perovskite...with 27A1/24Mg in anorthite from the Allende meteorite (Lee et al., I977a , b); Hutcheon et al., I977;...carbonaceous chondrites; however, mixtures of several meteorite types are more plausible than just a single type |  | | Book | | Theoretical advances and new data from asteroid and meteorite observations, coupled with spacecraft missions...the processes of planet formation. Combining meteorite, asteroid, and icy body observations with theory...One Liberty Plaza, 20th Floor, New York, NY 10006, USA 477 Williamstown Road, Port Melbourne, VIC 3207,...ISTB4, Room 795 781 E. Terrace Mall Tempe, AZ 85287, USA Pierre Beck Institut d’Astrophysique et de Planétologie...Science of Exploration Targets (ISET) Boulder, CO, USA James F. J. Bryson Department of Earth Sciences University |
|
