An Isotopic, Elemental and Structural Study of Silicon Nitride from Enstatite Chondrites
J. Leitner, C. Vollmer, T. Henkel, U. Ott, P. Hoppe Geochimica et Cosmochimica Acta Available online 4 June 2018 LINK “We report an in-situ investigation of silicon nitride (Si3N4) grains from several enstatite chondrites of…
Jupiter’s influence on the building blocks of Mars and EarthOPEN ACCESS
R. Brasser, N. Dauphas, S. J. Mojzsis Accepted for publication in GRL PDF (OPEN ACCESS) Radiometric dating indicates that Mars accreted in the first ~4 Myr of solar system formation, which coincides with the formation…
Nature of late accretion to Earth inferred from mass-dependent Ru isotopic compositions of chondrites and mantle peridotitesOPEN ACCESS
Timo Hopp, Thorsten Kleine Earth and Planetary Science Letters,Volume 494,15 July 2018,Pages 50-59 LINK (OPEN ACCESS) “Highlights • Uniform mass-dependent Ru isotopic compositions of chondrites. • Chondritic mass-dependent Ru isotopic composition of Earth’s mantle. •…
Raman spectroscopy of shocked enstatite‐rich meteorites
Zhang, B. , Shieh, S. R., Withers, A. C. and Bouvier, A. Meteorit Planet Sci. . doi:10.1111/maps.13106 LINK “We present Raman patterns of enstatite in different classes of enstatite‐rich chondrites and achondrites of various shock…
Reflectance spectra of synthetic Fe-free ortho- and clinoenstatites in the UV/VIS/IR and implications for remote sensing detection of Fe-free pyroxenes on planetary surfaces
Kathrin Markus, Lyuba Moroz, Gabriele Arnold, Daniela Henckel, Harald Hiesinger, Arno Rohrbach, Klemme Stephan Planetary and Space Science Available online 11 April 2018 LINK “Highlights • Even extremely Fe-poor pyroxenes show deep ultraviolet absorption bands….
Thermal evolution and sintering of chondritic planetesimals IV. Temperature dependence of heat conductivity of asteroids and meteoritesOPEN ACCESS
Hans-Peter Gail, Mario Trieloff accepted by Astronomy & Astrophysics PDF (OPEN ACCESS) “Understanding the compaction and differentiation of the planetesimals and protoplanets from the Asteroid Belt and the terrestrial planet region of the Solar System…
Enstatite chondrites EL3 as building blocks for the Earth: The debate over the 146Sm–142Nd systematics
M. Boyet, A. Bouvier, P. Frossard, T. Hammouda, M. Garçon, A. Gannoun Earth and Planetary Science Letters Volume 488, 15 April 2018, Pages 68–78 LINK “Highlights • Here we present the first high precision Nd…
Chemical variations of sulfides and metal in enstatite chondrites—Introduction of a new classification scheme
Weyrauch, M., Horstmann, M. and Bischoff, A. Meteoritics & Planetary Science. doi: 10.1111/maps.13025 LINK “In this study, the metal and sulfide compositions of 45 enstatite chondrites were analyzed to determine possible mineral-chemical trends correlated with…
Discovery of a meteoritic ejecta layer containing unmelted impactor fragments at the base of Paleocene lavas, Isle of Skye, ScotlandOPEN ACCESS
Simon M. Drake; Andrew D. Beard; Adrian P. Jones; David J. Brown; A. Dominic Fortes; Ian L. Millar; Andrew Carter;Jergus Baca; Hilary Downes Geology (2017) DOI:https://doi.org/10.1130/G39452.1 Published: December 12, 2017 LINK (OPEN ACCESS) PDF (OPEN…
Bulk chemical compositions of Antarctic meteorites in the NIPR collection
M. Kimura, N. Imae, A. Yamaguchi, H. Haramura, H. Kojima Polar Science doi.org/10.1016/j.polar.2017.12.001 Available online 5 December 2017 LINK “Bulk chemical compositions of meteorites were traditionally analyzed by wet chemical analysis, and NIPR has data…
Halogens in chondritic meteorites and terrestrial accretion
Patricia L. Clay, Ray Burgess, Henner Busemann, Lorraine Ruzié-Hamilton, Bastian Joachim, James M. D. Day & Christopher J. Ballentine Nature 551, 614–618 (30 November 2017) doi:10.1038/nature24625 LINK “Volatile element delivery and retention played a fundamental…
The selenium isotopic variations in chondrites are mass-dependent; Implications for sulfide formation in the early solar system
J. Labidi, S. König, T. Kurzawa, A. Yierpan, R. Schoenberg Earth and Planetary Science Letters Volume 481, 1 January 2018, Pages 212–222 LINK “Highlights • Significant δ82/78Se variations are recorded in chondrites. • The Se…
Experiments on Condensation of Calcium Sulfide Grains To Demarcate Environments for the Formation of Enstatite Chondrites
Kaori Yokoyama, Yuki Kimura , and Chihiro Kaito ACS Earth Space Chem., Article ASAP DOI: 10.1021/acsearthspacechem.7b00076 LINK “To achieve a better understanding of material evolution in the early solar system, experiments have been performed to…
Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct 205PbOPEN ACCESS
Palk, C., Andreasen, R., Rehkämper, M., Stunt, A., Kreissig, K., Coles, B., Schönbächler, M. and Smith, C. Meteorit Planet Sci. doi:10.1111/maps.12989 LINK (OPEN ACCESS) PDF (OPEN ACCESS) “New Tl, Pb, and Cd concentration and Tl,…
Chromium isotopic homogeneity between the Moon, the Earth, and enstatite chondritesOPEN ACCESS
Bérengère Mougel, Frédéric Moynier, Christa Göpel Earth and Planetary Science Letters Volume 481, 1 January 2018, Pages 1-8 LINK UPDATE (8 Dec 2017): PDF (OPEN ACCESS) “Highlights • The first Cr isotopic estimate (ε53ε53Cr and…
Tellurium stable isotope fractionation in chondritic meteorites and some terrestrial samples
Manuela A. Fehr, Samantha J. Hammond, Ian J. Parkinson Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 18 October 2017 LINK “New methodologies employing a 125Te-128Te double-spike were developed and applied to obtain…
The Effect of Jupiter’s Formation on the Distribution of Refractory Elements and Inclusions in MeteoritesOPEN ACCESS
Steven J. Desch, Anusha Kalyaan, Conel M. O’D. Alexander submitted to ApJ PDF (OPEN ACCESS) “We present a comprehensive evolutionary model of the Sun’s protoplanetary disk. The model predicts from first principles the gas densities…
Chemical variations within and between the clasts, and the matrix of the Abee enstatite chondrite suggest an impact-based differentiation mechanism
Michael D. Higgins, Pierre-Etienne M.C. Martin, Sciences Appliquées Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 6 October 2017 LINK “Abee is an enstatite chondrite breccia dominantly composed of kamacite, enstatite, silica, plagioclase,…
Cosmic-ray exposure ages of six chondritic Almahata Sitta fragments
Riebe, M. E. I., Welten, K. C., Meier, M. M. M., Wieler, R., Barth, M. I. F., Ward, D., Laubenstein, M., Bischoff, A., Caffee, M. W., Nishiizumi, K. and Busemann, H. Meteoritics & Planetary Science….
Titanium Stable Isotopic Variations in Chondrites, Achondrites and Lunar Rocks
Nicolas D. Greber, Nicolas Dauphas, Igor S. Puchtel, Beda A. Hofmann, Nicholas T. Arndt Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 30 June 2017 LINK “Titanium isotopes are potential tracers of processes…
Rubidium isotopic composition of the Earth, meteorites, and the Moon: Evidence for the origin of volatile loss during planetary accretionOPEN ACCESS
Emily A. Pringle, Frédéric Moynier Earth and Planetary Science Letters, Volume 473, 1 September 2017, Pages 62-70 LINK “Highlights • We measured high-precision stable Rb isotope ratios in terrestrial samples, chondrites, HED meteorites, and lunar…
Petrology and Bulk Composition of the Oudiyat Sbaa Fluororichterite-Bearing EH5 Chondrite: A Witnessed Fall from Eastern Morocco
Irving A. J., Kuehner S. M., Gao Y., Chen Y., Lapen T. J., Pitt D. 80th Annual Meeting of the Meteoritical Society 2017 [#6383] abstract “We characterize a recent Moroccan enstatite chondrite fall and report…
Silicate–SiO reaction in a protoplanetary disk recorded by oxygen isotopes in chondrules
Ryoji Tanaka & Eizo Nakamura Nature Astronomy 1, Article number: 0137 (2017) doi:10.1038/s41550-017-0137 LINK “The formation of planetesimals and planetary embryos during the earliest stages of the solar protoplanetary disk largely determined the composition and…
Silver contents and Cu/Ag ratios in Martian meteorites and the implications for planetary differentiation
Zaicong Wang, Harry Becker Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 21 May 2017 LINK “Silver and Cu show very similar partitioning behavior in sulfide melt-silicate melt and metal-silicate systems at low…
Mixing and transport of dust in the early solar nebula as inferred from titanium isotope variations among chondrulesOPEN ACCESS
Simone Gerber, Christoph Burkhardt, Gerrit Budde, Knut Metzler, Thorsten Kleine accepted for publication in the Astrophysical Journal Letters, May 10, 2017 PDF (OPEN ACCESS) Update (22 May 2017): LINK “Chondrules formed by the melting of…
New insights on petrography and geochemistry of impactites from the Lonar crater, India.
Ray, D., Upadhyay, D., Misra, S., Newsom, H. E. and Ghosh, S. Meteoritics & Planetary Science. doi: 10.1111/maps.12881 LINK “The Lonar impact crater, India, is one of the few known terrestrial impact craters excavated in…
Testing the chondrule-rich accretion model for planetary embryos using calcium isotopesOPEN ACCESS
Elsa Amsellem, Frédéric Moynier, Emily A. Pringle, Audrey Bouvier, Heng Chen, James M. D. Day PhD Student Conference (PhDSC), l’Institut de Physique du Globe de Paris (IPGP), 13-17 March 2017 PDF (OPEN ACCESS) Update (28…
Origin of EL3 chondrites: Evidence for variable C/O ratios during their course of formation—A state of the art scrutiny.
El Goresy, A., Lin, Y., Miyahara, M., Gannoun, A., Boyet, M., Ohtani, E., Gillet, P., Trieloff, M., Simionovici, A., Feng, L. and Lemelle, L. Meteoritics & Planetary Science. doi: 10.1111/maps.12832 LINK “Mineral inventories of enstatite…
The isotopic nature of the Earth’s accreting material through time
Nicolas Dauphas Nature 541, 521–524 (25 January 2017) doi:10.1038/nature20830 Published online: 25 January 2017 LINK “The Earth formed by accretion of Moon- to Mars-size embryos coming from various heliocentric distances. The isotopic nature of these…
Asteroid 2008 TC3 Breakup and Meteorite Fractions
Goodrich, C.; Jenniskens, P.; Shaddad, M. H.; Zolensky; M. E.; Fioretti, A. M. JSC-CN-38419, Conference Paper Asteroid Comets and Meteors Conference (ACM 2017); 10-14 Apr. 2017; Montevideo; Uruguay abstract “The recovery of meteorites from the…
The global elemental composition of 433 Eros: First results from the NEAR Gamma-Ray Spectrometer orbital dataset
Patrick N. Peplowski Planetary and Space Science In Press, Accepted Manuscript http://dx.doi.org/10.1016/j.pss.2016.10.006 LINK “Highlights • First results from the NEAR GRS orbital investigation • Eros’ surface composition is consistent with ordinary chondrites, enstatite chondrites, and…
Calcium Isotopic Compositions of Chondrites
Shichun Huang, Stein B. Jacobsen Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 4 October 2016 http://dx.doi.org/10.1016/j.gca.2016.09.039 LINK “We report mass-dependent and mass-independent Ca isotopic variations in nine chondrites from three groups: carbonaceous,…
Molybdenum isotopic evidence for the origin of chondrules and a distinct genetic heritage of carbonaceous and non-carbonaceous meteoritesOPEN ACCESS
Gerrit Budde, Christoph Burkhardt, Gregory A. Brennecka, Mario Fischer-Gödde, Thomas S. Kruijer, Thorsten Kleine Earth and Planetary Science Letters In Press, Corrected Proof, Available online 3 October 2016 PDF (OPEN ACCESS) LINK (OPEN ACCESS) “Nucleosynthetic…
Magmatic sulfides in the porphyritic chondrules of EH enstatite chondritesOPEN ACCESS
Laurette Piani, Yves Marrocchi, Guy Libourel, Laurent Tissandier PDF (open access) Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 22 September 2016 LINK “The nature and distribution of sulfides within 17 porphyritic chondrules…
Primitive Solar System materials and Earth share a common initial 142Nd abundance
A. Bouvier & M. Boyet Nature 537, 399–402 (15 September 2016) doi:10.1038/nature19351 LINK “The early evolution of planetesimals and planets can be constrained using variations in the abundance of neodymium-142 (142Nd), which arise from the…
A nucleosynthetic origin for the Earth’s anomalous 142Nd composition
C. Burkhardt, L. E. Borg, G. A. Brennecka, Q. R. Shollenberger, N. Dauphas, T. Kleine Nature 537, 394–398 (14 September 2016) | doi:10.1038/nature18956 LINK “A long-standing paradigm assumes that the chemical and isotopic compositions of…
Impact melting of the largest known enstatite meteorite: Al Haggounia 001, a fossil EL chondrite.
Rubin, A. E. Meteoritics & Planetary Science. doi: 10.1111/maps.12679 LINK “Al Haggounia 001 and paired specimens (including Northwest Africa [NWA] 2828 and 7401) are part of a vesicular, incompletely melted, EL chondrite impact melt rock…
The isotope composition of selenium in chondrites constrains the depletion mechanism of volatile elements in solar system materials
Hauke Vollstaedt, Klaus Mezger, Ingo Leya Earth and Planetary Science Letters, Volume 450, 15 September 2016, Pages 372-380 Available online 15 July 2016 LINK “Highlights • The Se isotope composition of CC, OC, and EC…
The First Discovery of Presolar Graphite Grains from the Highly Reducing Qingzhen (EH3) Meteorite
Yuchen Xu, Yangting Lin, Jianchao Zhang, and Jialong Hao The Astrophysical Journal, Volume 825, Number 2 Published 2016 July 7 LINK “Presolar graphite grains have been extensively studied, but are limited in carbonaceous chondrites, particularly…
The valence and coordination of titanium in ordinary and enstatite chondrites
Steven B. Simon, Stephen R. Sutton, Lawrence Grossman Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 17 June 2016 LINK “One way to better understand processes related to chondrite metamorphism is to evaluate…
Characterization of Nitrogen-Bearing Phases in the Enstatite Chondrites Indarch and Neuschwanstein
Leitner J. * Hoppe P. 79th Annual Meeting of the Meteoritical Society (2016) #6173 LINK
Diversity Among EH Chondrites: Anomalous EH3 Chondrite Northwest Africa 8789 and Rare EH Melt Rocks Northwest Africa 7324 and Northwest Africa 10237
Kuehner S. M. Irving A. J. Sipiera P. P. 79th Annual Meeting of the Meteoritical Society (2016) #6448 LINK
Mn-Cr Dating of Enstatite Chondrites
Hopp J. * Trieloff M. Storck J.-C. Ludwig T. Meyer H. P. Altherr R. El Goresy A. 79th Annual Meeting of the Meteoritical Society (2016) #6258 LINK
Almahata Sitta News: Well-Known Varieties and New Species in the Zoo
Bischoff A. Ebert S. Patzek M. Horstmann M. Pack A. Decker S. 79th Annual Meeting of the Meteoritical Society (2016) #6319 LINK
Joegoldsteinite: A new sulfide mineral (MnCr2S4) from the Social Circle IVA iron meteorite
Junko Isa, Chi Ma, Alan E. Rubin American Mineralogist 10.2138/am-2016-5594 First Published on May 02, 2016 LINK “Joegoldsteinite, a new sulfide mineral of end-member formula MnCr2S4, was discovered in the Social Circle IVA iron meteorite….
A Comparative Study of the Zaklodzie and Northwest Africa 4301 Anomalous Enstatite Achondrites
D. D. Uribe, P. J. A. McCausland, M. R. M. Izawa 47th Lunar and Planetary Science Conference (2016), Abstract #3071 PDF
2D condensation model for the inner Solar Nebula: an enstatite-rich environment
Francesco C. Pignatale, Kurt Liffman, Sarah T. Maddison, Geoffrey Brooks Accepted in MNRAS on 2015 December 23. Received 2015 December 16; in original form 2015 May 04 Published online on 7 Jan 2016 PDF (open…
I-Xe ages of enstatite chondrites
Jens Hopp, Mario Trieloff, Ulrich Ott Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 23 November 2015 doi:10.1016/j.gca.2015.11.014 LINK “In order to elucidate the early thermal history of enstatite chondrite parent bodies we…
The origin of the neon isotopes in chondrites and on Earth
Manuel Moreira, Sébastien Charnoz Earth and Planetary Science Letters In Press, Corrected Proof, Available online 16 November 2015 doi:10.1016/j.epsl.2015.11.002 LINK “We discuss the origin of the neon isotopic signatures in chondrites and in the terrestrial…
High-precision sulfur isotope composition of enstatite meteorites and implications of the formation and evolution of their parent bodies
C. Defouilloy, P. Cartigny, N. Assayag, F. Moynier, J.-A. Barrat Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 19 October 2015 doi:10.1016/j.gca.2015.10.009 LINK “In order to better understand the formation and evolution of…
Evolution of Zakłodzie enstatite meteorite – insight from TEM analyses
A. Krzesinska, R. Wirth, and M.A. Kusiak EPSC Abstracts Vol. 10, EPSC2015-651, 2015 European Planetary Science Congress 2015 PDF “The Zakłodzie meteorite is an achondritic-like rock with enstatite chondrite parentage [1,2,3]. Its texture indicative for…
Cosmochemical fractionation by collisional erosion during the Earth’s accretion
Asmaa Boujibar, Denis Andrault, Nathalie Bolfan-Casanova, Mohamed Ali Bouhifd & Julien Monteux Nature Communications 6, Article number: 8295 doi:10.1038/ncomms9295 Published 23 September 2015 LINK (open access) Supplementary information (PDF) “Early in the Solar System’s history,…
The formation conditions of enstatite chondrites: Insights from trace element geochemistry of olivine-bearing chondrules in Sahara 97096 (EH3)
Jacquet, E., Alard, O. and Gounelle, M. Meteoritics & Planetary Science. doi: 10.1111/maps.12481 LINK Update (Jun 2,2016): PDF
Petrology and geochemistry of chondrules and metal in nwa 5492 and gro 95551: a new type of metal-rich chondrite
Michael K. Weisberg, Denton S. Ebel, Daisuke Nakashima, Noriko T. Kita, Munir Humayun Geochimica et Cosmochimica Acta available online 22 July 2015 LINK
Nonporphyritic chondrules and chondrule fragments in enstatite chondrites: Insights into their origin and secondary processing
Varela, M. E., Sylvester, P., Brandstätter, F. and Engler, A. Meteoritics & Planetary Science. doi: 10.1111/maps.12468 LINK
Chips Off the Old Block: Enstatite Chondrites as Samples of the Proto-Earth
Gaidos E. * Yin Q.-Z. 78th Annual Meeting of the Meteoritical Society (2015), abstract #5145 abstract (PDF)
Fractionation of Highly Siderophile and Chalcogen Elements in Components of EH3 Chondrites
Yogita Kadlag, Harry Becker Geochimica et Cosmochimica Acta In press, available online 18 April 2015 doi:10.1016/j.gca.2015.04.022 LINK
Thulium anomalies and rare earth element patterns in meteorites and Earth: Nebular fractionation and the nugget effect
N. Dauphas, A. Pourmand Geochimica et Cosmochimica Acta in press, arXiv:1503.08708 PDF (full text) LINK Update (11 April): doi:10.1016/j.gca.2015.03.037 LINK
Impact features of enstatite-rich meteorites
Alan E. Rubin Chemie der Erde – Geochemistry doi:10.1016/j.chemer.2014.09.001 In Press, Corrected Proof, Available online 11 December 2014 LINK
EH3 matrix mineralogy with major and trace element composition compared to chondrules
S. W. Lehner, W. F. McDonough and P. Németh Meteoritics & Planetary Science, Article first published online: 18 NOV 2014 | DOI: 10.1111/maps.12391 LINK
Calcium-48 isotopic anomalies in bulk chondrites and achondrites: Evidence for a uniform isotopic reservoir in the inner protoplanetary disk
Nicolas Dauphas, James H. Chen, Junjun Zhang, Dimitri A. Papanastassiou, Andrew M. Davis, Claudia Travaglio Earth and Planetary Science Letters Volume 407, 1 December 2014, Pages 96–108 LINK The Earth has identical 48Ca isotopic composition…
The Unique Differentiated Meteorite NWA 7325: Highly Reduced, Stark Affinities to E-Chondrites and Unknown Parental Planet
A. El Goresy, T. Nakamura, M. Miyahara, E. Ohtani, Ph. Gillet, K. Jogo, M. Yamanobe and H. Ishida PDF LINK
The nature of Earth’s building blocks as revealed by calcium isotopes
Valdes MC, Moreira M, Foriel J and Moynier F. Earth and Planetary Science Letters Volume 394, 15 May 2014, Pages 135–145 LINK
39Ar-40Ar chronology of the enstatite chondrite parent bodies
Hopp J, Trieloff M, Ott U, Korochantseva EV and Buykin AI Meteoritics & Planetary Science Volume 49, Issue 3, pages 358–372, March 2014 LINK
Petrogenesis of anomalous Queen Alexandra Range enstatite meteorites and their relation to enstatite chondrites, primitive enstatite achondrites, and aubrites
van Niekerk D, Keil K and Humayun M Meteoritics & Planetary Science, 49: 295–312. doi: 10.1111/maps.12248
The fate of magmas in planetesimals and the retention of primitive chondritic crusts
Fua RR and Elkins-Tanton LT (2014) Earth and Planetary Science Letters Volume 390, 15 March 2014, Pages 128–137 LINK High abundances of short-lived radiogenic isotopes in the early solar system led to interior melting and…
The lithophile trace elements in enstatite chondrites
Barrat JA, Zanda B., Jambon A. and Bollinger C. Geochimica et Cosmochimica Acta Volume 128, 1 March 2014, Pages 71–94 LINK
Structure, composition, and location of organic matter in the enstatite chondrite Sahara 97096 (EH3)
Laurette Piani, FrançOis Robert, Olivier Beyssac, Laurent Binet, Michèle Bourot-Denise, Sylvie Derenne, Corentin Le Guillou, Yves Marrocchi, Smail Mostefaoui, Jean-Noel Rouzaud, Aurelien Thomen Meteoritics and Planetary Science 47 Issue 1 pages 8-29 January 2012 PDF…
