MINERALOGY, PETROGRAPHY, AND OXYGEN ISOTOPIC COMPOSITIONS OF ULTRAREFRACTORY INCLUSIONS FROM CARBONACEOUS CHONDRITES
A.N. Krot, C. Ma, K. Nagashima, A.M. Davis, J.R. Beckett, S.B. Simon, M. Komatsu, T.J. Fagan, F. Brenker, M.A. Ivanova, A.Bischoff Geochemistry Available online 15 August 2019 LINK “We report on the mineralogy, petrography, and…
MINERALOGY, PETROGRAPHY, AND OXYGEN AND ALUMINUM-MAGNESIUM ISOTOPE SYSTEMATICS OF GROSSITE-BEARING REFRACTORY INCLUSIONS
Alexander N. Krot, Kazuhide Nagashima, Steven B. Simon, Chi Ma, Harold C. Connolly Jr., Gary R. Huss, Andrew M. Davis, Martin Bizzarro Geochemistry Available online 15 August 2019 LINK “Grossite (CaAl4O7) is one of the…
Titanium isotope signatures of calcium-aluminum-rich inclusions from CV and CK chondrites: Implications for early Solar System reservoirs and mixing
Zachary A. Torrano, Gregory A. Brennecka, Curtis D. Williams, Stephen J. Romaniello, Vinai K. Rai, Rebekah R.Hines, Meenakshi Wadhwaa Geochimica et Cosmochimica Acta In Press, Journal Pre-proof, Available online 2 August 2019 LINK “Calcium-aluminum-rich inclusions…
Refractory inclusions in carbonaceous chondrites: Records of early solar system processes
Alexander N. Krot Meteoritics & Planetary Science First Published: 23 July 2019 LINK “Chondrites consist of three major components: refractory inclusions (Ca,Al‐rich inclusions [CAIs] and amoeboid olivine aggregates), chondrules, and matrix. Here, I summarize recent…
Oxygen Isotope Variation of CM and Related Chondrites: Multiple Parent Bodies or a Single Heterogeneous Source?
Franchi I. A., Greenwood R. C., Howard K. T., King A. J., Lee M. R., Anand M., Findlay R. 82nd Annual Meeting of The Meteoritical Society 2019 PDF abstract “CMs are the largest group of…
Are hypervelocity impacts able to produce chondrule-like ejecta?
Clément Ganino, Guy Libourel, Akiko M. Nakamura, Patrick Michel Planetary and Space Science In Press, Accepted Manuscript, Available online 19 June 2019 LINK “Highlights • Silicate ejecta formed in impact experiment have several similarities with…
Dust Condensation in Evolving Discs and the Composition of Meteorites, Planetesimals, and PlanetsOPEN ACCESS
Min Li, Shichun Huang, Michail I. Petaev, Zhaohuan Zhu, Jason H. Steffen Submitted to MNRAS PDF (OPEN ACCESS) “Partial condensation of dust from the Solar nebula is thought to be responsible for the diverse chemical…
3-μm reflectance spectroscopy of carbonaceous chondrites under asteroid-like conditions
Driss Takir, Karen R. Stockstill-Cahill, Charles A. Hibbitts, Yusuke Nakauchi Icarus In Press, Accepted Manuscript, Available online 20 May 2019 LINK “Highlights • We present the most comprehensive 3-μm dataset of carbonaceous chondrites ever acquired…
3-micron Reflectance Spectroscopy of Carbonaceous Chondrites under Asteroid-like ConditionsOPEN ACCESS
Driss Takir, Karen R. Stockstill-Cahill, Charles A. Hibbitts, Yusuke Nakauchi PDF (OPEN ACCESS) “We measured 3-μm reflectance spectraof 21 meteorites that represent all carbonaceous chondrite types available in terrestrial meteorite collections. The measurements were conducted…
Oxygen and Al‐Mg isotopic compositions of grossite‐bearing refractory inclusions from CO3 chondrites
Steven B. Simon, Alexander N. Krot, Kazuhide Nagashima Meteoritics & Planetary Science LINK “The distribution of the short‐lived radionuclide 26Al in the early solar system remains a major topic of investigation in planetary science. Thousands…
Titanium isotopic evidence for a shared genetic heritage of refractory inclusions from different carbonaceous chondrites
Jan Render, Samuel Ebert, Christoph Burkhardt, Thorsten Kleine, Gregory A. Brennecka Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 14 March 2019 LINK “Insights into the earliest stages of our Solar System can…
Chromium Isotopic Evidence for an Early Formation of Chondrules from the Ornans CO Chondrite
Ke Zhu (朱柯), Jia Liu, Frédéric Moynier, Liping Qin, Conel M. O’D. Alexander, and Yongsheng He The Astrophysical Journal, Volume 873, Number 1 LINK “Chondrules are the main components of primitive meteorites and possibly the…
Quantitative models for the elemental and isotopic fractionations in chondrites: The carbonaceous chondrites
Conel M. O’D. Alexander Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 16 February 2019 LINK “A quantitative understanding of the elemental and isotopic fractionations recorded in the compositions of the chondritic meteorites…
Chromium Isotopic Evidence for an Early Formation of Chondrules from the Ornans CO Chondrite
K. Zhu, J. Liu, L. P. Qin, C. M.O’D. Alexander, Y. S. He, F. Moynier 50th Lunar and Planetary Science Conference (2019), Abstract #2405 PDF abstract
Condensate refractory inclusions from the CO3.00 chondrite Dominion Range 08006: Petrography, mineral chemistry, and isotopic compositions
S.B. Simon, A.N. Krot, K. Nagashima, L. Kööp, A.M. Davis Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 27 November 2018 LINK “We have found two refractory inclusions in the CO3.00 carbonaceous chondrite…
Molecular distribution, 13C‐isotope, and enantiomeric compositions of carbonaceous chondrite monocarboxylic acids
José C. Aponte, Hannah K. Woodward, Neyda M. Abreu, Jamie E. Elsila, Jason P. Dworkin Meteoritics & Planetary Science First Published: 12 November 2018 LINK “The water‐soluble organic compounds in carbonaceous chondrite meteorites constitute a…
Variable distribution of s-process Hf and W isotope carriers in chondritic meteorites – evidence from 174Hf and 180W
Bo-Magnus Elfers, Peter Sprung, Markus Pfeifer, Frank Wombacher, Stefan T.M.Peters, Carsten Münker Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 11 August 2018 LINK “The stepwise acid digestion of primitive chondritic meteorites allows…
Ti isotopic evidence for a non-CAI refractory component in the inner Solar System
Samuel Ebert, Jan Render, Gregory A. Brennecka, Christoph Burkhardt, Addi Bischoff, Simone Gerber, Thorsten Kleine Earth and Planetary Science Letters Volume 498, 15 September 2018, Pages 257-265 In Press, Available online 20 July 2018 LINK…
Lack of resolvable titanium stable isotopic variations in bulk chondrites
Zhengbin Deng, Frédéric Moynier, Kirsten van Zuilen, Paolo A. Sossi, Emily A. Pringle, Marc Chaussidon Geochimica et Cosmochimica Acta Available online 23 June 2018 LINK “Titanium and calcium are both refractory lithophile elements. Significant stable…
Petrography and mineralogy of calcium-, aluminum-rich inclusions in an unequilibrated carbonaceous chondrite Y 81020 (CO3.05)OPEN ACCESS
Mishra, Ritesh Kumar Current Science Volume 114 – Issue 07 : 10 April 2018 PDF (OPEN ACCESS) “Petrographic and quantitative analyses of more than 70 refractory inclusions found in the studied thin section of Yamato…
Calcium and titanium isotopes in refractory inclusions from CM, CO, and CR chondrites
Levke Kööp, Andrew M. Davis, Alexander N. Krot, Kazuhide Nagashima, Steven B. Simon Earth and Planetary Science Letters Volume 489, 1 May 2018, Pages 179–190 Available online 9 March 2018 LINK “Highlights • Some CAIs…
High Abundances of Presolar Grains and 15N-rich Organic Matter in CO3.0 Chondrite Dominion Range 08006OPEN ACCESS
Larry R. Nittler, Conel M. O’D. Alexander, Jemma Davidson, My E. I. Riebe, Rhonda M. Stroud, Jianhua Wang accepted for publication in Geochimica Cosmochimica Acta PDF (OPEN ACCESS) Update (10 Feb 2018): LINK “NanoSIMS C-,…
A Hibonite-Pyroxene Spherule in Allan Hills 77307 (CO3.03): Petrography and MineralogyOPEN ACCESS
Ritesh Kumar Mishra PDF (OPEN ACCESS) “Hibonite-pyroxene spherules are an extremely rare kind of refractory inclusion that show a wide range of exotic isotopic properties despite their defining similarity and simplicity in morphology and mineralogy….
Origin and abundance of water in carbonaceous asteroids
Yves Marrocchi, David V. Bekaert, Laurette Piani Earth and Planetary Science Letters, Volume 482, 15 January 2018, Pages 23-32 LINK Highlights • Bulk, matrix and fayalite grains of CV chondrites define a continuous trend. •…
A new mineralogical approach for CO3 chondrite characterization by X-ray diffraction: Identification of primordial phases and thermal history
Imae, N. and Nakamuta, Y. Meteoritics & Planetary Science. doi: 10.1111/maps.12996 LINK “Using the in-plane rotation of polished thin section, the X-ray diffraction patterns exhibiting a high degree of randomness similar to powder pattern were…
Distribution of aliphatic amines in CO, CV, and CK carbonaceous chondrites and relation to mineralogy and processing history
Aponte, J. C., Abreu, N. M., Glavin, D. P., Dworkin, J. P. and Elsila, J. E. Meteoritics & Planetary Science. doi: 10.1111/maps.12959 LINK “The analysis of water-soluble organic compounds in meteorites provides valuable insights into…
CM and CO chondrites: A common parent body or asteroidal neighbors? Insights from chondrule silicates
Devin L. Schrader, Jemma Davidson Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 29 July 2017 LINK “By investigating the petrology and chemical composition of type II (FeO-rich) chondrules in the Mighei-like carbonaceous…
Calcium and Titanium Isotope Systematics in Refractory Inclusions from CM, CO, and CR Chondrites
Kööp L. * Davis A. M. Krot A. N. Nagashima K. Simon S. B. 80th Annual Meeting of the Meteoritical Society 2017 [#6280] abstract (PDF) “We studied a large number of CAIs from three different…
Measurements of Silica Excess in Plagioclase in Chondrules from Primitive Carbonaceous Chondrites: Implications for 26Al-26Mg Systematics
Chaumard N. * Hertwig A. T. Kita N. T. Tenner T. J. Kimura M. 80th Annual Meeting of the Meteoritical Society 2017 [#6309] abstract (PDF) “Chondrules in 3.05–3.1 CCs contain plagioclases that retained silica excess,…
Formation Mechanism of Iron-Rich Olivine: Experimental Constrains into Early Fluid-Assisted Hydration and Dehydration Processes on Asteroids
Dobricǎ E. * Nuth J. A. Brearley A. J. 80th Annual Meeting of the Meteoritical Society 2017 [#6342] abstract (PDF) “We performed three new experiments in an attempt to synthesize FeO-rich olivine. This study shows…
50Ti Evidence for Different Refractory Precursors in Chondrules
Ebert S. Render J. Brennecka G. A. Burkhardt C. Bischoff A. Kleine T. 80th Annual Meeting of the Meteoritical Society 2017 [#6255] abstract “Different refractory precursors in chondrules are necessary to explain the different 50Ti…
Presolar Silicates in the Matrix and Fine-grained Rims Around Chondrules in Primitive CO3.0 Chondrites: Evidence for Pre-Accretionary Aqueous Alteration of the Rims in the Solar Nebula
Pierre Haenecour, Christine Floss, Thomas J. Zega, Thomas K. Croat, Alian Wang, Bradley L. Jolliff, Paul Carpenter Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 8 June 2017 LINK “To investigate the origin…
A multi-technique search for the most primitive CO chondrites
C.M.O’D. Alexander, R.C. Greenwood, R. Bowden, J.M. Gibson, K.T. Howard, I.A. Franchi Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 24 April 2017 LINK “As part of a study to identify the most…
The origin of volatile element depletion in early solar system material: Clues from Zn isotopes in chondrulesOPEN ACCESS
Emily A. Pringle, Frédéric Moynier, Pierre Beck, Randal Paniello, Dominik C. Hezel Earth and Planetary Science Letters, Volume 468, 15 June 2017, Pages 62-71 Open Access funded by European Research Council LINK (OPEN ACCESS) Update…
Evolution of Morphological and Physical Properties of Laboratory Interstellar Organic Residues with Ultraviolet IrradiationOPEN ACCESS
L. Piani, S. Tachibana, T. Hama, H. Tanaka, Y. Endo, I. Sugawara, L. Dessimoulie, Y. Kimura, A. Miyake, J. Matsuno, A. Tsuchiyama, K. Fujita, S. Nakatsubo, H. Fukushi, S. Mori, T. Chigai, H. Yurimoto, and…
Noble Gas Compositions of Seven CV, CO, and CK Chondrites from Deserts
J. Choi, K. Nagao, J. M. Baek, R. Bartoschewitz, C. Park, J. I. Lee, M. J. Lee 48th Lunar and Planetary Science Conference (2017), Abstract #1852 LINK
The key role of meteorites in the formation of relevant prebiotic molecules in a formamide/water environmentOPEN ACCESS
Luca Rotelli, Josep M. Trigo-Rodríguez, Carles E. Moyano-Cambero, Eleonora Carota, Lorenzo Botta, Ernesto Di Mauro & Raffaele Saladino Scientific Reports 6, Article number: 38888 (2016) doi:10.1038/srep38888 Published online: 13 December 2016 LINK (OPEN ACCESS) PDF…
Ion irradiation of carbonaceous chondrites: a new view of space weathering on primitive asteroids
C. Lantz, R. Brunetto, M.A. Barucci, S. Fornasier, D. Baklouti, J. Bourçois, M. Godard Icarus In Press, Accepted Manuscript, Available online 16 December 2016 LINK “Highlights • New ion irradiations on several carbonaceous chondrites to…
Microstructures and Formation History of Melilite-Rich Calcium-Aluminum-Rich Inclusions from the ALHA77307 CO3.0 Chondrite
Jangmi Han, Adrian J. Brearley Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 21 October 2016 LINK “We have studied four melilite-rich calcium-aluminum-rich inclusions (CAIs) from the Allan Hills A77307 CO3.0 chondrite using…
A long duration of the 16O-rich reservoir in the solar nebula, as recorded in fine-grained refractory inclusions from the least metamorphosed carbonaceous chondrites
Takayuki Ushikubo, Travis J. Tenner, Hajime Hiyagon, Noriko T. Kita Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 4 September 2016 LINK “Oxygen isotope ratios and corresponding 26Al-26Mg isotope systematics of refractory inclusions…
Coordinated Analysis of Two Graphite Grains from the CO3.0 LAP 031117 Meteorite: First Identification of a CO Nova Graphite and a Presolar Iron Sulfide SubgrainOPEN ACCESS
Pierre Haenecour, Christine Floss, Jordi Jose, Sachiko Amari, Katharina Lodders, Manavi Jadhav, Alian Wang, Frank Gyngard Accepted for publication in The Astrophysical Journal PDF (open access) abstract “Presolar grains constitute remnants of stars that existed…
Stardust in the CO3.0 Chondrite NWA 8631: Low Abundance of Presolar Silicates
Haenecour P. Floss C. 79th Annual Meeting of the Meteoritical Society (2016) #6209 LINK
Continuing the Search for the Most Primitive CO Chondrites: The Oxygen Isotope Perspective
R. C. Greenwood, I. A. Franchi, C. M. O’D. Alexander, K. T. Howard 47th Lunar and Planetary Science Conference (2016), Abstract #2206 PDF
Pristine Pre-Accretionary Signatures in CM Chondrite Silicates: A Common Parent-Body with the CO Chondrites?
D. L. Schrader, J. Davidson 47th Lunar and Planetary Science Conference (2016), Abstract #1288 PDF
Genetic relationship between Na-rich chondrules and Ca,Al-rich inclusions? – Formation of Na-rich chondrules by melting of refractory and volatile precursors in the Solar Nebula
Samuel Ebert, Addi Bischoff Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 28 January 2016 doi:10.1016/j.gca.2016.01.014 LINK “Al-rich objects (Ca,Al-rich inclusions (CAIs), Al-rich chondrules, Al-rich fragments) occur in all chondrite classes. These objects…
Circumstellar Magnetite from the LAP 031117 CO3.0 Chondrite
Thomas J. Zega, Pierre Haenecour, Christine Floss, and Rhonda M. Stroud The Astrophysical Journal Volume 808 Number 1 Thomas J. Zega et al. 2015 ApJ 808 55. doi:10.1088/0004-637X/808/1/55 LINK
Early aqueous activity on the ordinary and carbonaceous chondrite parent bodies recorded by fayalite
Patricia M. Doyle, Kaori Jogo, Kazuhide Nagashima, Alexander N. Krot, Shigeru Wakita, Fred J. Ciesla, Ian D. Hutcheon Nature Communications 6, Article number: 7444 doi:10.1038/ncomms8444 published: 23 June 2015 LINK Supplementary Information (PDF)
Grain Size Distribution in the Matrix of Primitive Meteorites
Vaccaro E. Wozniakiewicz P. J. Starkey N. A. Franchi I. A. Russell S. S. 78th Annual Meeting of the Meteoritical Society (2015), abstract #5258 abstract (PDF)
Overgrowth Layers on Pyroxene in an FeO-Rich Porphyritic Chondrule in CO3.0 Y-81020
Baecker B. Rubin A. E. Wasson J. T. 78th Annual Meeting of the Meteoritical Society (2015), abstract #5082 abstract (PDF)
Refractory inclusions in the pristine carbonaceous chondrites DOM 08004 and DOM 08006
Simon, S. B. and Grossman, L. (2015) Meteoritics & Planetary Science. doi: 10.1111/maps.12452 LINK The Antarctic carbonaceous chondrites DOM 08004 and DOM 08006 have been paired and classified as CO3.0s. There is some uncertainty as…
Microstructural evidence for complex formation histories of amoeboid olivine aggregates from the ALHA77307 CO3.0 chondrite
Jangmi Han and Adrian J. Brearley Meteoritics & Planetary Science. doi: 10.1111/maps.12439 Article first published online: 22 APR 2015 LINK
An Amoeboid Olivine Aggregate Surrounded by an Igneous Ferroan Olivine-Rich Rim from CO3.0 Chondrite DOM 08006
K. Nagashima, A. N. Krot, C. Park 46th Lunar and Planetary Science Conference (2015), Abstract #2477 PDF LINK
Differentiated Planetesimals with Chondritic Crusts: New Δ17O-ε54Cr Evidence in Unique, Ungrouped Achondrites for Partial Melting of the CV/CK and CO Parent Bodies
M. E. Sanborn, Q.-Z. Yin, A. J. Irving, T. E. Bunch 46th Lunar and Planetary Science Conference (2015), Abstract #2259 PDF LINK
Presolar materials and isotope anomalies in the unique carbonaceous chondrite Miller Range 07687
J. Davidson, L. R. Nittler, and C. M. O’D. Alexander. Goldschmidt 2014, Abstract #503 LINK
