 | Nguyen, Ann N., Berger, Eve L., NakamuraâMessenger, Keiko, Messenger, Scott, Keller, Lindsay P. (2017) Coordinated mineralogical and isotopic analyses of a cosmic symplectite discovered in a comet 81P/Wild 2 sample. Meteoritics & Planetary Science, 52 (9) 2004-2016 doi:10.1111/maps.12905 | Journal (article/letter/editorial) |
| isotopic analyses of a cosmic symplectite discovered in a comet 81P/Wild 2 sample Ann N. NGUYEN1,2,*, Eve...accepted 14 May 2017) AbstractâWe have discovered in a Stardust mission terminal particle a unique mineralogical...(COS) have only been found in the primitive carbonaceous chondrite Acfer 094 and are believed to have formed...reservoir either inside the snow line, in the Wild 2 comet, or in a larger Kuiper Belt object. Close association...FeO-rich olivine, and albite) that likely originated in the solar nebula suggests the COS precursors also |
 | Bland, P.A., Sexton, A.S., Jull, A.J.T., Bevan, A.W.R., Berry, F.J., Thornley, D.M., Astin, T.R., Britt, D.T., Pillinger, C.T. (1998) Climate and rock weathering: a study of terrestrial age dated ordinary chondritic meteorites from hot desert regions. Geochimica et Cosmochimica Acta, 62 (18) 3169-3184 doi:10.1016/s0016-7037(98)00199-9 | Journal (article/letter/editorial) |
| 1998 Copyright © 1998 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/98 $19.00...Arizona 85721, USA (Received May 1, 1997; accepted in revised form June 4, 1998) AbstractâOrdinary chondrites...subsequently weathered in a range of climatic regimes from the present day to . 44 ka BP. In addition, recently...magnetically ordered (principally magnetite and maghemite). OC finds show a range in the percentage of total Fe...meteorites). Our results indicate several features of meteorite weathering that may result from climatic or geomorphologic |
 | | Journal (article/letter/editorial) |
| reservoirs of the solar nebula recorded in chondrules in Acfer 094 carbonaceous chondrite Takayuki Ushikubo...310-8512, Japan Received 23 June 2011; accepted in revised form 4 May 2012; available online 16 May...analyses of oxygen three-isotope ratios in chondrules from the Acfer 094, one of the most primitive carbonaceous...heterogeneity in chondrule-forming regions of the solar nebula. Identical D17O values in most minerals...chondrule indicate that the oxygen isotope ratio in chondrule melt did not change during or after crystallization |
 | | Journal (article/letter/editorial) |
| 115â131 www.elsevier.com/locate/gca Isotopic diversity in interplanetary dust particles and preservation of...Glasgow G12 8QQ, UK Received 4 March 2014; accepted in revised form 12 July 2014; available online 27 July...region a few micrometres in size characterised by 16O-depleted isotope signatures in the range d17O, d18O...to many other IDPs and bulk meteorites. Other than in discrete pre-solar grains, such extreme 16O-depletions...observed previously in rare components within the matrix of the Acfer 094 meteorite. However, TEM imaging |
 | Vollmer, Christian, Hoppe, Peter, Stadermann, Frank J., Floss, Christine, Brenker, Frank E. (2009) NanoSIMS analysis and Auger electron spectroscopy of silicate and oxide stardust from the carbonaceous chondrite Acfer 094. Geochimica et Cosmochimica Acta, 73 (23) 7127-7149 doi:10.1016/j.gca.2009.08.015 | Journal (article/letter/editorial) |
| oxide stardust from the carbonaceous chondrite Acfer 094 Christian Vollmer a,*, Peter Hoppe a, Frank J...Frankfurt, Germany Received 21 January 2009; accepted in revised form 16 August 2009; available online 23...complex grains within the carbonaceous chondrite Acfer 094 by NanoSIMS oxygen isotope mapping. These grains...chemical details and their distribution within the meteorite matrix. The three complex grains consist of Al-rich...condensation theory and astronomical observations. However, in the majority of presolar silicates we did not ïŹnd |
 | | Journal (article/letter/editorial) |
| 10.1111/maps.12994 A study of presolar material in hydrated lithic clasts from metal-rich carbonaceous...hydrated lithic clasts in three metal-rich carbonaceous chondrites from the CR clan, Acfer 182 (CH3), Isheyevo...presolar silicon carbide (SiC) grains were identified in the clasts. Presolar silicate abundances range from...parts per million (ppm), significantly lower than in pristine meteorites and interplanetary dust particles...15Nenrichments and presolar dust concentrations in the clasts. This is in contrast to the findings from a suite |
 | RUSSELL, SARA S., OTT, ULRICH, ALEXANDER, CONEL M. O'D., ZINNER, ERNST K., ARDEN, JOHN W., PILLINGER, C. T. (1997) Presolar silicon carbide from the Indarch (EH4) meteorite: Comparison with silicon carbide populations from other meteorite classes. Meteoritics & Planetary Science, 32 (5) 719-732 doi:10.1111/j.1945-5100.1997.tb01557.x | Journal (article/letter/editorial) |
| Society, 1997. Printed in USA. Presolar silicon carbide from the Indarch (EH4) meteorite: Comparison with...with silicon carbide populations from other meteorite classes SARAS. RUSSELL1,**,ULRICHOTT3, CONELM. OD....February I I ; accepted in revised form I997 June 2) (Part of a series ofpapers in this issue on Presolar...Abstract-Presolar Sic from the Indarch (EH4) meteorite was studied by scanning electron microscopy (SEM)... The isotopic compositions of the major elements in S i c from Indarch and Murchison are similar. Stepped |
 | | Journal (article/letter/editorial) |
| org/10.1016/j.gca.2020.05.026 GCA 11785 To appear in: Geochimica et Cosmochimica Acta Received Date:...copyediting, typesetting and review before it is published in its final form, but we are providing this version...the Department of Physics, Washington University in St. Louis, St. Louis, MO 63130, USA. Abstract We...organic matter (OM) in 14 xenolithic carbonaceous clasts (C-clasts) identified in the Kapoeta howardite...isotopic imaging data. The 14 Cclasts are ~50â200 ÎŒm in size and consisted of one CM-like and 13 CI-like |
 | | Journal (article/letter/editorial) |
| STUDY OF Fe2+-Mg2+ ORDER-DISORDER IN PYROXENE FROM THE CACHARI METEORITE Y. A. Abdu1, R. B. Scorzelli2,...Argentina. Introduction: The Cachari meteorite, found in 1916 in Argentina, is a monomictic eucrite that...indicates that the only Fe-containing mineral present in the Cachari eucrite is pyroxene [3]. The study of...sites M1 and M2 in pyroxenes is useful in tracing the thermal history of a rock. In unshocked and slowly...M1 and M2 sites in orthopyroxene from the Cachari eucrite by Mössbauer spectroscopy in the temperature |
 | | Journal (article/letter/editorial) |
| group (PMG) and the Eagle Station grouplet (PES). In the meantime, additional pyroxene-bearing pallasites...10019 was purchased by Steve Arnold from Morocco in January 2015 and consisted of one 580 gram fusion...2Wo1.0±0.2, Fe/Mn=23±1, n=6, ~10 vol %), all set in a matrix of taenite (Fe=72.0±4.0, Ni=27.4±2.4, Co=0...analyzed in 11 replicates by laser fluorination) are different from other pyroxene pallasites in that they...significantly elevated in fayalite content relative to PMG and are similar to olivines in Springwater (PMG-an) |
 | | Journal (article/letter/editorial) |
| Pyroxene is an important rock-forming mineral found in the Earthâs upper mantle and on the surfaces of inner...inferred by remote reflectance spectroscopy (mainly in the near-infrared (NIR) region), thus making the...phases [5]. This anomaly is similar to that observed in Mössbauer spectra of some Ca-rich clinopyroxenes...pyroxenes shows a residual electron density peak in the difference-Fourier synthesis, located at ~ 0...the existence of two different local configurations in the M2 cavity, a hedenbergite-like arrangement and |
 | | Journal (article/letter/editorial) |
| prior to its selection as a Rosetta flyby target in 2004, a ground-based observational campaign was undertaken...sets of spectra were collected over an ~3 h interval in order to obtain data on each hemisphere of the asteroid...spectral slope at longer wavelengths up through 0.92 ”m. In addition, previous investigators have determined...the sulfide instead of Ca2+. In addition, oldhamite is present only in highly reduced mineral assemblages...a plausible similarity between this meteorite and the asteroid in terms of albedo and absorption features |
 | | Journal (article/letter/editorial) |
| classified into petrologic types 1 and 2 [1,2]. However, in recent years, CR samples experiencing thermal metamorphism...heterogeneity is observed even in a single PTS. It is noted that the size of Fe-Ni metal in one of the PTSs are...much larger (~2 mm) than that in the other (~0.8 mm, mostly 0.2 mm). In our Tafassasset PTSs, no relict...compositions of Tafassasset are mostly homogeneous in major elements: olivine (Fa26-28), high-Ca pyroxene...cooling histories. Al and Ti contents in low-Ca pyroxene are homogeneous in NWA 7317 (Al2O3: 0.6-0.9 wt%, TiO2: |
 | | Journal (article/letter/editorial) |
| MOÌSSBAUER SPECTROSCOPY OF OLIVINES FROM THE DâORBIGNY METEORITE Y. A. Abdu1, M. E. Varela2 and F. C. Hawthorne1... 5444 A PRELIMINARY STUDY OF MAGMATIC VOLATILES IN ANGRITES F. A. J. Abernethy1, A. Verchovsky1, I....Olivine is a major basaltic mineral in high-temperature volcanic rocks and in stony meteorites. The DâOrbigny...angrite contains large olivine crystals (up to 1 cm in size) that are present throughout the rock, mimicking...GOl; 856, 824 cm)1 for POl, reïŹecting variability in composition. Using the x (= j1-j2) â Mg# relation |
 | | Journal (article/letter/editorial) |
| STUDY OF THE MECHANISMS OF FORMATION OF NANOSULFIDES IN COMET WILD 2 N. M. Abreu1, F. J. M. Rietmeijer2 and...FIELD, PATAGONIA, ARGENTINA: THE LARGEST CRATER FIELD IN THE WORLD? R. D. Acevedo, J. Rabassa, M. J. Orgeira...collected its freshly ejected dust, which carved tracks in ultra-low density, silica aerogel collection tiles...by which this occurred has remained unexplained. In this paper we experimentally explore how disequilibrium...Discussion: Samples were produced by vaporizing solid S in a furnace tube into which a H2, Fe-carbonyl, silane |
 | | Book |
| this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical...storage and retrieval system, without permission in writing from the publisher. Details on how to seek...This book and the individual contributions contained in it are protected under copyright by the Publisher...noted herein). Notices Knowledge and best practice in this ïŹeld are constantly changing. As new research...and experience broaden our understanding, changes in research methods, professional practices, or medical |
 | | Book (edition) |
| Lecture Notes in Physics Founding Editors: W. BeiglboÌck, J. Ehlers, K. Hepp, H. WeidenmuÌller Editorial... The Lecture Notes in Physics The series Lecture Notes in Physics (LNP), founded in 1969, reports new...new developments in physics research and teaching â quickly and informally, but with a high quality and...communicate current knowledge in an accessible way. Books published in this series are conceived as bridging...considered for LNP. Volumes published in LNP are disseminated both in print and in electronic formats, the electronic |
