 | Bland, Philip A., Stadermann, Frank J., Floss, Christine, Rost, Detlef, Vicenzi, Edward P., Kearsley, Anton T., Benedix, Gretchen K. (2007) A cornucopia of presolar and early solar system materials at the micrometer size range in primitive chondrite matrix. Meteoritics & Planetary Science, 42 (7) 1417-1427 doi:10.1111/j.1945-5100.2007.tb00582.x | Journal (article/letter/editorial) | | solar system materials at the micrometer size range in primitive chondrite matrix Philip A. BLAND1, 2*,...and oxygen-isotopic compositions in a 50 × 50 μm area of Acfer 094 matrix. The results reveal the exceptional...with widely varying Ni contents, and a Cr-Fe alloy (in addition to forsterite, pyroxene, sulfide, ferrihydrite...isotopic compositions. Unlike the larger CAIs in Acfer 094, which are uniformly 16O-enriched, two of the... this grain has isotopically normal Li. Finally, in our 50 × 50 μm area, we positively identified a presolar |  | | Journal (article/letter/editorial) | | observations reveal that classical novae often form dust in their expanding shells ejected into the interstellar...identification of presolar nova candidate grains from the Acfer 094 and Murchison meteorites. Recently, however, concerns...titanium, in nova-like events. PRESOLAR GRAINS Presolar grains are tiny pieces of stardust found in primitive...suite of nucleosynthetic processes that took place in their parent stellar sources. Detailed analyses of...2006; Zinner 2004). So far, silicon carbide (SiC), graphite (C), diamond (C), silicon nitride (Si3N4), silicates |  | 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) Abstract—Ordinary chondrites...subsequently weathered in a range of climatic regimes from the present day to . 44 ka BP. In addition, recently...(principally magnetite and maghemite). OC finds show a range in the percentage of total Fe existing as Fe31 from...meteorites). Our results indicate several features of meteorite weathering that may result from climatic or geomorphologic |  | 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 find |  | 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) | | http://meteoritics.org The use of Auger spectroscopy for the in situ elemental characterization of sub-micrometer...samples of stardust that can be found at low abundances in some of the most unaltered types of extraterrestrial...dissolution techniques, such as silicon carbide and graphite, recent analyses of presolar silicates rely on...these grains in situ. Since presolar silicates are generally less than a micrometer in diameter and represent...we began using scanning Auger spectroscopy for the in situ elemental characterization of presolar silicate |  | Nittler, Larry R., Alexander, Conel M.O'D., Davidson, Jemma, Riebe, My E.I., Stroud, Rhonda M., Wang, Jianhua (2018) High abundances of presolar grains and 15N-rich organic matter in CO3.0 chondrite Dominion Range 08006. Geochimica et Cosmochimica Acta, 226. 107-131 doi:10.1016/j.gca.2018.01.038 | Journal (article/letter/editorial) | | abundances of presolar grains and 15N-rich organic matter in CO3.0 chondrite Dominion Range 08006 Larry R. Nittler...20375-5320, USA Received 1 November 2017; accepted in revised form 30 January 2018; available online 10...mapping of matrix in CO3.0 chondrite Dominion Range (DOM) 08006 revealed it to have in its matrix the highest...presolar O-rich grains (257 +76/96 ppm, 2r) of any meteorite. It also has a matrix abundance of presolar SiC...that DOM 08006 is the most primitive known CO meteorite. Transmission electron microscopy of five presolar |  | | 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 |  | Stadermann, Frank J., Hoppe, Peter, Floss, Christine, Heck, Philipp R., Hörz, Friedrich, Huth, Joachim, Kearsley, Anton T., Leitner, Jan, Marhas, Kuljeet K., Mckeegan, Kevin D., Stephan, Thomas (2008) Stardust in Stardust-The C, N, and O isotopic compositions of Wild 2 cometary matter in Al foil impacts. Meteoritics & Planetary Science, 43 (1) 299-313 doi:10.1111/j.1945-5100.2008.tb00624.x | Journal (article/letter/editorial) | | org Stardust in Stardust—The C, , and O isotopic compositions of Wild 2 cometary matter in Al foil impacts...2006; revision accepted 29 April 2007) Abstract–In January 2006, the Stardust mission successfully returned...returned dust samples from the tail of comet 81P/Wild 2 in two principal collection media, low-density silica...measurements on four large (59–295 μm in diameter) and on 47 small (0.32–1.9 μm in diameter) Al-foil impact craters...Most analyzed residues in and around these craters are isotopically normal (solar) in their C, N, and O isotopic |  | Leitner, J., Hoppe, P., Floss, C., Hillion, F., Henkel, T. (2018) Correlated nanoscale characterization of a unique complex oxygen-rich stardust grain: Implications for circumstellar dust formation. Geochimica et Cosmochimica Acta, 221. 255-274 doi:10.1016/j.gca.2017.05.003 | Journal (article/letter/editorial) | | org/10.1016/j.gca.2017.05.003 GCA 10270 To appear in: Geochimica et Cosmochimica Acta Received Date:...review of the resulting proof before it is published in its final form. Please note that during the production...with progressive TDUs. We observed a small excess in 30Si (δ30Si = 41 ± 5 ‰), which most likely is inherited...We also report the first observation of phosphorus in a presolar grain, although the origin of the P-bearing...“presolar” or “stardust” grains, are found in small quantities in primitive Solar System materials such as |  | | 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 |  | Busemann, Henner, Nguyen, Ann N., Cody, George D., Hoppe, Peter, Kilcoyne, A.L. David, Stroud, Rhonda M., Zega, Thomas J., Nittler, Larry R. (2009) Ultra-primitive interplanetary dust particles from the comet 26P/Grigg–Skjellerup dust stream collection. Earth and Planetary Science Letters, 288 (1) 44-57 doi:10.1016/j.epsl.2009.09.007 | Journal (article/letter/editorial) | | o Article history: Received 2 June 2009 Received in revised form 2 September 2009 Accepted 4 September...remained largely unaltered in a cold undisturbed environment since accretion in the outer protoplanetary...unknown. We speculate that some IDPs collected by NASA in April 2003 may be associated with comet 26P/Grigg–Skjellerup...metals and sulfides) that potentially imply formation in a nebular rather than planetary environment. The...organic matter or amorphous carbon were widespread in the comet-forming regions of the outer protoplanetary |  | | Journal (article/letter/editorial) | | 4980, 2003 Copyright © 2003 Elsevier Ltd Printed in the USA. All rights reserved 0016-7037/03 $30.00... 20015, USA (Received February 4, 2003; accepted in revised form July 3, 2003) Abstract—We report the...isotopic ratios in micrometer-sized particles by secondary ion mass spectrometry (SIMS) in a Cameca ims-6f...electrostatically deflected to and focused onto each particle in turn, followed by a peak-jumping isotopic measurement...analyzed grains were extracted from the host meteorite using a new chemical dissolution procedure. The |  | | 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 ~50−200 μm in size and consisted of one CM-like and 13 CI-like |  | | Journal (article/letter/editorial) | | org/10.1016/j.gca.2017.06.008 GCA 10321 To appear in: Geochimica et Cosmochimica Acta Received Date:...review of the resulting proof before it is published in its final form. Please note that during the production...Meteoritic nanodiamonds carry noble gases with anomalies in their stable isotopes that have drawn attention to...maximized spatial resolution to measure carbon isotopes in the smallest clusters of nanodiamonds possible. We...presolar components are required to be either low in concentration, or to have a mean ratio close to that |  | | 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 Earth’s 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 µm. 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 |  | | Book | | Introduction to Presolar Grains WORLD SCIENTIFIC SERIES IN ASTRONOMY AND ASTROPHYSICS Editor: Jayant V. Narlikar...Astronomy A. Bhatnagar and W. Livingston Volume 7: Dust in the Universe: Similarities and Differences K. S....Garden, London WC2H 9HE British Library Cataloguing-in-Publication Data A catalogue record for this book...This book, or parts thereoJ may not be reproduced in anyform or by any means, electronic or mechanical...from the Publisher. For photocopying of material in this volume, please pay a copying fee through the |  | | 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 |  | | Journal (article/letter/editorial) | | MÖSSBAUER SPECTROSCOPY OF OLIVINES FROM THE D’ORBIGNY 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 D’Orbigny...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, reflecting variability in composition. Using the x (= j1-j2) – Mg# relation |  | | 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: |  | | 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 field 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. Beiglböck, J. Ehlers, K. Hepp, H. Weidenmüller 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 – 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 |
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