Resolving the Contradictory Results for Chondrule Size Distributions When These are Empirically Determined and Theoretically Considered
Hezel D. C., Metzler K., Hochstein M. L. 52nd Lunar and Planetary Science Conference (2021), Abstract #2264 PDF “Chondrule size distributions are critical to understand chondrule formation, sorting, or fragmentation. We resolve a long-standing contradiction…
Oxygen Isotope Reservoirs in the Solar Nebula
Mane P., Desch S. J., Dunham E. T., Williams C. D. 52nd Lunar and Planetary Science Conference 2021, abstract #2566 PDF
Magnetization of Large C-Type Asteroids: A Detectable Consequence of Pebble Accretion?
S. W. Courville, O’Rourke J. G., Castillo-Rogez J. C., Oran R., Weiss B. P. et al. 52nd Lunar and Planetary Science Conference (2021), Abstract #2355 PDF “The theory of pebble accretion implies that large planetesimals…
The Structure and Accretionary History of the CVox Parent Body Constrained from the Magnetization of Kaba
K. H. Dodds, Bryson J. F. J., Neufeld J. A., Harrison R. J. 52nd Lunar and Planetary Science Conference (2021), Abstract #2133 PDF “The magnetization of some CVox meteorites suggests their parent body was partially…
A Presolar Silicon Carbide Grain of Type C with Extremely Low 12C/13C Ratio
P. Hoppe, Schofield J., Pignatari M., Amari S. 52nd Lunar and Planetary Science Conference (2021), Abstract #1055 PDF “We report on a presolar SiC grain of Type C with an extremely low 12C/13C ratio of…
A CV Chondrite Clast in a CK Chondrite?
T. L. Dunn, Robak K. N., Gross J. 52nd Lunar and Planetary Science Conference (2021), Abstract #1063 PDF
Separate CAI Reservoirs for Allende (CV3) and Murchison (CM2)
D. S. Ebel, Fendrich K. V. 52nd Lunar and Planetary Science Conference (2021), Abstract #2311 PDF “Chemical compositions, textures, and sizes of CAIs reveal characteristic populations in CV and CM chondrites. With chondrule evidence, this…
Multiple CV Chondrule Precursors Originating from the Inner and Outer Solar System: Evidence from Cr-Ti-O Isotope Systematics of Allende Chondrules
K. Fukuda, Hibiya Y., Kastelle C. R., Suzuki K., Iizuka T. et al. 52nd Lunar and Planetary Science Conference (2021), Abstract #1319 PDF “The large ranges of Cr-Ti-O isotope ratios among CV chondrules indicate that…
Micro-FTIR Imaging and Spectroscopy of Experimentally Space Weathered CM2 Chondrite Murchison
T. D. Glotch, Thompson M. S., Dukes C. A., Loeffler M. J. 52nd Lunar and Planetary Science Conference (2021), Abstract #2004 PDF “Space weathered chondrite: / Micro-infrared data / Show lots of changes.”
Studying the Main Mineralogy and Shock of the Bolivian H5 Chondrite Aiquile
J. Ibáñez-Insa, Trigo-Rodriguez J. M., Peña-Asensio E., Rimola A. 52nd Lunar and Planetary Science Conference (2021), Abstract #1385 PDF “A XRD study of the main mineral phases of Aiquile H5 chondrite is presented. SEM-EDX results…
Cosmogenic Radionuclides in Four Paired Antarctic L/LL Chondrites Indicate Similar Cosmic-Ray Exposure Age as Chelyabinsk LL Chondrite
K. C. Welten, Nishiizumi K., Caffee M. W. 52nd Lunar and Planetary Science Conference (2021), Abstract #1821 PDF “Cosmogenic radionuclides in 4 L/LL chondrites from Wisconsin Range, Antarctica indicate they are paired fragments. Their CRE…
Handling and Description of C-Type Asteroid Ryugu Samples Returned by Hayabusa2
T. Yada, Abe M., Nakato A., Yogata K., Miyazaki A. et al. 52nd Lunar and Planetary Science Conference (2021), Abstract #2008 PDF “Hayabusa2 returned samples from C-type asteroid Ryugu last December. >5 grams of black…
Initial 244Pu/238U Ratios and Search for Presolar SiC in CAIs Inferred from Noble Gas and Trace Element Abundances in CAIs from CV3 Chondrites
D. Nakashima, Friedrich J. M., Ott U. 52nd Lunar and Planetary Science Conference (2021), Abstract #1944 PDF “The Pu/U ratio estimated from noble gas and REE abundances in the five CV3 CAIs is consistent with…
Short Cosmic-Ray Exposure Ages of CI and CM Chondrites May Reflect Disintegration of Volatile-Rich Asteroids at Perihelion
E. R. D. Scott, Herzog G. F. 52nd Lunar and Planetary Science Conference (2021), Abstract #1833 PDF “Dark, volatile-rich asteroids seem to disintegrate near the Sun. This may explain why CM and CI chondrites have…
Evidence Against Chondrule-Matrix Complementarity as Seen in CO, CM, and CR Chondrites
A. Patzer, Bullock E. S., Alexander C. M. O’D. 52nd Lunar and Planetary Science Conference (2021), Abstract #1866 PDF “We have investigated 12 CO, CM, and CR chondrites to test models for the compositions and…
Tender Energy X-Ray Microspectroscopy Reveals Microscale Heterogeneity of P and S Chemistry in CM2 Chondrite
P. A. Northrup, Wirick S., Flynn G. J. 52nd Lunar and Planetary Science Conference (2021), Abstract #2480 PDF “Tender energy X-ray absorption microspectroscopy at the TES beamline was used to directly measure microscale chemical speciation…
Do Water-Rich Carbonaceous Chondrites and the NEA Ryugu Share a Common Parent Body?
W. Neumann, Grott M., Trieloff M. 52nd Lunar and Planetary Science Conference (2021), Abstract #1852 PDF “Properties of CI and CM parent bodies are investigated by fitting the carbonate formation temperature and age data with…
Fine-Grained Equant Troilite in the CM Chondrite Shidian: Potential Evidence for Low Temperature Post-Hydration Heating
L. E. Jenkins, Lee M. R., Daly L., Li S. 52nd Lunar and Planetary Science Conference (2021), Abstract #1204 PDF “Shidian, CM fall / Low temperature heating / Seen in troilite grains.”
Evidence for Extraterrestrial L-Amino Acid Excesses in the CM2 Aguas Zarcas and Murchison Meteorites: Predictions for Ryugu and Bennu
Glavin D. P., Elsila J. E., McLain H. L., Aponte J. C., Parker E. T. et al. 52nd Lunar and Planetary Science Conference (2021), Abstract #1086 PDF “We report the detection of extraterrestrial L-amino acids…
Abiotic Synthesis of Organic Matter in Aqueous Environments Simulating Parent Bodies of Meteorites and the Effects of Minerals on the Production of Amino Acids
W. Elmasry, Kebukawa Y., Shibuya T., Kobayashi K. 52nd Lunar and Planetary Science Conference (2021), Abstract #1775 PDF “Minerals affected the formation of amino acids in aqueous environments in small solar system bodies and that…
Insoluble Organic Matter in Ryugu Analog Meteorite Jbilet Winselwan
B. T. De Gregorio, Stroud R. M. 52nd Lunar and Planetary Science Conference (2021), Abstract #2059 PDF “Studies of Ryugu return samples require refined approaches in sample preparation and analysis. We demonstrate advanced methods to…
Parent Body Processing in CR Chondrites Recorded by Noble Gases
H. Busemann, Schrader D. L., Alexander C. M. O’D., Spring N. H., Kuga M. et al. 52nd Lunar and Planetary Science Conference (2021), Abstract #2718 PDF “Noble gases measured in a large number of CR…
Understanding Space Weathering of Carbonaceous Asteroids Through H+ and He+ Ion Irradiation of the Murchison Meteorite
D. L. Laczniak, Thompson M. S., Christoffersen R., Dukes C. A., Clemett S. J.et al. 52nd Lunar and Planetary Science Conference (2021), Abstract #2361 PDF “Solar wind in the asteroid belt / Helium, hydrogen ions,…
Hydrogen Content in Chondrules of CM Chondrites: Influence of Aqueous Alteration or Preaccretional Heritage?
S. Azevedo-Vannson, Remusat L., Piani L., Pont S., Roskosz M. 52nd Lunar and Planetary Science Conference (2021), Abstract #1867 PDF “Ion probe reveals high H content in NAMs of chondrules in Paris and Aguas Zarcas…
A New Occurrence of Phosphoran Olivine in Ungrouped Achondrite Northwest Africa 12319
R. L. Pang, Du W. 52nd Lunar and Planetary Science Conference (2021), Abstract #2417 PDF “We report the first description of P-rich olivine (up to 12.4 wt% P2O5) in an ungrouped achondrite NWA 12319 and…
Petrology and Oxygen Isotopic Composition of Two Different Ungrouped Highly Magnesian, Reduced Ultramafic Achondrites (Northwest Africa 11562/12969 and Northwest Africa 13307): More Samples from Unknown Parent Bodies
A. J. Irving, Carpenter P. K., Ziegler K. 52nd Lunar and Planetary Science Conference (2021), Abstract #2244 PDF “We describe unusual highly magnesian, reduced harzburgitic, and websteritic achondrites which differ significantly from the more well-known…
Comparing the Reflectivity of Ungrouped Carbonaceous Chondrites with those of Short Period Comets Like 2P/Encke
S. Tanbakouei, Trigo-Rodríguez J. M., Blum J., Williams I., Llorca J. 52nd Lunar and Planetary Science Conference (2021), Abstract #1581 PDF “The main goal of our work is to identify samples in our meteorite collections…
Extra-Terrestrial Carbon and Water Molecule in Mukundpura Carbonaceous Chondrite (CM2)
A. Dutta, Raychaudhuri D., Nevin C. G., Bhattacharya A. 52nd Lunar and Planetary Science Conference (2021), Abstract #1869 PDF “In the present study, LRS and FTIR spectroscopy has been carried out to determine qualitative and…
Hibonite and Its Associated Ultrarefractory Phases from the Paris CM Chondrite
Han J., Keller L. P. 52nd Lunar and Planetary Science Conference (2021), Abstract #2587 PDF “TEM studies of hibonite and its inclusions of Zr-bearing perovskite, lakargiite, tazheranite, and Os-Ir-W-Mo alloy to determine their microstructure, chemistry,…
Hydrogen Isotopic Composition of Water in the Ungrouped Carbonaceous Chondrite Tagish Lake
L. G. Vacher, Ogliore R. C., Liu N. 52nd Lunar and Planetary Science Conference (2021), Abstract #2528 PDF “We evaluate the δD value of the water in Tagish Lake (TL) from in-situ Si/H and δD…
Round up the unusual suspects: Near-Earth Asteroid 17274 (2000 LC16) a plausible D-type parent body of the Tagish Lake meteorite
Gordon M. Gartrelle, Paul S. Hardersen, Matthew R.M. Izawa, Matthew C. Nowinski IcarusIn Press, Journal Pre-proof, Available online 6 February 2021 LINK “Highlights • Spectral, visual, mathematical and Shkuratov radiative transfer analyses have determined near-Earth…
Mid-infrared reflectance spectroscopy of synthetic glass analogs for mercury surface studies
Andreas Morlok, Christian Renggli, Bernard Charlier, Maximilian P. Reitze, Stephan Klemme, Olivier Namur, Martin Sohn, Dayl Martin, Iris Weber, Leksandra N.Stojic, Harald Hiesinger, Katherine H.Joy, Roy Wogelius, Peter Tollan, Cristian Carli, Karin E. Bauch, Joern…
