Indian Meteorites of the Last Three Decades: Kopargaon and the Expanding Meteorite Record of India
Jaiswal S.* Mahajan R. R. Kumar A. Marhas K. K. METSOC 2026 abstract (PDF) “Meteorites provide key records of Solar System history, from primitive asteroids to differentiated bodies. Indian finds are mostly ordinary chondrites with…
Physical Properties and Cosmogenic Radionuclides in Drelów Meteorite Specimens
Tymiński Z.* Krzesińska A. M. Burakowska A. Tymińska K. Kosiński T. et al. METSOC 2026 abstract (PDF) “On February 18, 2025 a bright fireball was recorded over eastern Poland by Skytinel network. Approximately 70 individual…
New Meteorite Find in the Area of Blaubeuren: Historic Strewnfield or Coincidence?
Patzek M.* Paliwal D. Krietsch D. Barrat J. A. Merchel S. et al. METSOC 2026 abstract (PDF) “A newly found specimen close to the Blaubeuren meteorite in Germany has been studied for its relationship with…
Rapid Recovery of the Second Iron Meteorite with a Well-Constrained Pre-Atmospheric Orbit
Żmija M. Tymiński Z.* Kővágó G. Świerczyński E. Walczak A. et al. METSOC 2026 abstract (PDF) “On April 17, 2026, a bright fireball over Poland was recorded by 25 Skytinel Network stations. Trajectory, orbit and…
Fireball Velocity Smoothing Via Piecewise Exponential Approximation
Gritsevich M.* METSOC 2026 abstract (PDF) “A fitting method with adaptive segmentation reconstructs meteor velocities from noisy trajectory data. It replaces numerical differentiation with analytical modeling to provide robust, physically consistent velocity profile and parameter…
Mid-Infrared Spectral Constraints on Aqueous Alteration in CM Chondrites
Girich A. L.* Stojic A. Morlok A. Bischoff A. Hiesinger H. et al. METSOC 2026 abstract (PDF) “We investigated clasts with different degrees of aqueous alteration in the brecciated CM chondrites Cold Bokkeveld and Nogoya…
Calcite and Gypsum in Dominion Range 08006 (CO3.00): Distinguishing Terrestrial from Parent Body Alteration
Lee M. R.* Haller R. L. METSOC 2026 abstract (PDF) “Calcite in DOM 08006 (CO3.00) — probably produced by Antarcic weathering, but how can we be sure?”
Molecular Characterization of the Soluble Organic Matter of the Tarda Meteorite Using Ultra-High-Resolution FTICR-MS and LC-MS
Liss M. L.* Ruchti S. R. Schmitt-Kopplin P. S-K. METSOC 2026 abstract (PDF) “Molecular characterization of soluble organic matter in the Tarda meteorite using FTICR-MS and LC-MS reveals high chemical diversity, polarity-dependent composition, and pronounced…
Hypervolatile Organics in the Pristine CI Chondrite Oued Chebeika 002: Implications for Volatile Evolution and Outer Solar System Connections
Zheng Y.* Santos E. Huang Y. Heck P. R. METSOC 2026 abstract (PDF) “Hypervolatile organics in CI chondrite Oued Chebeika 002 show low methane but enriched S-species. Ongoing δD measurements and comparisons with ISM and…
Northwest Africa (NWA) 15468: A New Kind of Ordinary Chondrite with a Shocking History
Hutson M. L. Ruzicka A. M. Friedrich J. M.* Weisberg M. K. Dua L. A. et al. METSOC 2026 abstract (PDF) “NWA 15468 has Fa compositions (8.0-9.2) more magnesian than OCs. Metal abundance (12-24%) is…
Investigating the Evolution of Organics in the Early Solar System Through In Situ Analysis of CI Chondrites
Lewis P. I.* Chan Q. H. S. Russell S. S. King A. J. METSOC 2026 abstract (PDF) “SEM-EDS maps and Raman spectra were collected on CI chondrites to investigate structural variation of organic matter within…
Ammonium Extraction from Carbonaceous Chondrites: A Comparative Study
Depoortere J.* Poch O. Laize-Générat L. Malnuit A. Caillon N. et al. METSOC 2026 abstract (PDF) “Ammonium is a major nitrogen carrier in primitive meteorites, yet its quantification depends on extraction efficiency. By testing three…
CI1 Oued Chebeika 002: Sr-Y Trace Element Distribution Revealed by SXRF Analysis
Tkalcec B. J.* Baert T. Herthogs J. Vekemans B. Vincze L. et al. METSOC 2026 abstract (PDF) “We report the results of the first phase of a two-stage trace element investigation of Oued Chebeika 002…
A TEM Study of Oued Chebeika 002: Mineralogy, Composition and Comparison with CI Chondrites
Conconi R.* Le Guillou C. Laforet S. Marinova M. Meuret S. et al. METSOC 2026 abstract (PDF) “Nanoscale TEM study of Oued Chebeika 002 reveals phyllosilicates, Fe-nanosulfides, magnetite, and carbonates formed from aqueous alteration. Textures…
The ‘CX’ Grouplet: A New CR-Like Carbonaceous Chondrite Group
Cuppone T.* Carli C. Casalini M. Greenwood C. R. Pratesi G. METSOC 2026 abstract (PDF) “We present results on the mineral-bulk chemistry and O-Cr siotopic compositions that strongly suggests the existence of a new CR-like…
Phosphate Textural Diversity in CI Chondrites and C-Type Asteroids
Erickson T.* Seifert L. Eckley S. O’Neal E. Crow C. et al. METSOC 2026 abstract (PDF) “This study will present a highly coordinated microstructural, geochemical and geochronological investigation of apatite from CI-chondrites and C-type asteroids.”
A Petrologically Primitive Rock Fragment Discovered from Asteroid (101955) Bennu
Matsumoto M.* Tsuchiyama A. Kawasaki N. Nakashima D. Yasutake M. et al. METSOC 2026 abstract (PDF) “A petrologically primitive rock fragment was discovered from asteroid (101955) Bennu samples. It shares similar characteristics with primitive carbonaceous…
Chemical and Chromium Isotopic Variabilities at Small Scale in CI Chondrites, Ryugu, Bennu and Related Materials
López García K.* Yokoyama T. Nakanishi N. Shirahata A. Zhu K. METSOC 2026 abstract (PDF) “Elemental and Cr isotopic data show widespread small-scale heterogeneity in carbonaceous materials, most pronounced in Ryugu and CIs, likely reflecting…
Noble Gases of CI1 Chondrites: Comparative Study with Ryugu Samples Returned by the Hayabusa2 Spacecraft
Nagao K.* Nishiizumi K. Caffee M. W. Kim H. Park C. et al. METSOC 2026 abstract (PDF) “Noble gases of six CI1 chondrites: Orgueil, Revelstoke, Yamato 980115, Tonk, Ivuna, and Oued Chebeika 002 (three additional…
Redox Partitioning of Soluble Sulfur Species in Bennu and Tagish Lake Meteorite: Enrichment of Alkyl Thiosulfates and Suppression of Polythionates
Randazzo N. Hilts R. Rubio V. O. Herd C. D. K.* Reiz B. et al. METSOC 2026 abstract (PDF) “Comparison of soluble sulfur species in Bennu and Tagish Lake reveals redox partitioning, with Bennu enriched…
Evidence for Moderately Evolved Organic Matter and Preserved Ammonia in Oued Chebeika 002
Stroud R. M.* Alexander C. M. O’D. Cody G. D. Foustoukos D. Glavin D. P. et al. METSOC 2026 abstract (PDF) “Oued Chebeika 002 organic matter indicates accretion in an ammonia-ice rich environment similar to…
Carbon and Nitrogen Abundances and Isotopic Compositions of Lithic Clasts in Isheyevo
Fujiya W.* Yokoyama T. D. Takahashi H. Hashizume K. METSOC 2026 abstract (PDF) “We measured the C and N abundances and isotopic compositions of Isheyevo lithic clasts and found highly nitrogen-15 rich compositions and low…
Extreme ¹³C-Depletions in CM Chondrite IOM: Presolar Origins Revealed by NanoSIMS and HRTEM
Natrajan S.* Marhas K. K. METSOC 2026 abstract (PDF) “Coordinated C,N isotopic and microscopic analysis of insoluble organic matter extracted from CM chondrites provides insight into the preservation of a refractory, pristine carbon rich component…
Source Region and Parent-Body Processes Shape the Evolutionary Diversity of Soluble Organic Matter in Carbonaceous Chondrites
Dong M.* Yang W. Li Y. Li S. Hu S. et al. METSOC 2026 abstract (PDF) “This study applies UHPLC–HRMS-based prebiomics to nine carbonaceous chondrites (CI1, C2-ung, CM2), showing that soluble organic matter evolution is…
Interrogating the Origins of Extraterrestrial Organics in the Winchcombe Meteorite Using Combined ESI-Orbitrap LCMS and IRMS
Hallis L. J.* O’Brien A. Weatherill J. Regnault C. Blackburn G. et al. METSOC 2026 abstract (PDF) “We studied the soluble organic molecule inventory of the Winchcombe CM2 chondrite. Numerous organic sulfonate compounds were detected,…
Micro-Scale Analyses of Isotopically Anomalous Macromolecular Organic Matter in the Paris CM Chondrite
Forero-Fuentes V.* Meraviglia H. Nittler L. R. Stroud R. M. METSOC 2026 abstract (PDF) “To determine the effects of alteration on macromolecular organic matter (MOM) in Paris, we conducted a SEM-NanoSIMS-TEM study of MOM inclusions,…
Deciphering the Iron Isotopic Composition of the Inclusion-Like Reservoir: Insight from AOAs in CV Chondrites
Piralla M.* Hopp T. Burkhardt C. Kleine T. METSOC 2026 abstract (PDF) “Iron isotope analysis of Allende AOAs reveals negative µ54Fe, defining a common reservoir with CAIs and supporting that the NC-CC dichotomy reflects a…
Chronology and Oxygen Isotopic Composition of CAIs and Aluminium-Rich Chondrules in Unequilibrated Ordinary Chondrites
Mishra R. K.* Marhas K. K. Simon J. I. Marrocchi Y. Villeneuve J. METSOC 2026 abstract (PDF) “Refractory inclusions in non-carbonaceous chondrites are very rare. 26Al-26Mg relative chronology and oxygen isotopic composition of CAIs and…
Terrestrial Formation of Evaporites in CO Carbonaceous Chondrites from the Atacama Desert: Implications for Martian Environments
Pinto G. A.* Debaille V. Eschrig J. Corgne A. Soto K. et al. METSOC 2026 abstract (PDF) “Evaporites are frequently reported in carbonaceous chondrites, yet their origin remains debated between formation on the parent body…
Chad: The New Frontier in Sahara Meteorite Finds?
Yacoub A. N.* Rochette P. Gattacceca J. Sylvestre F. Al Hadj H. Z. METSOC 2026 abstract (PDF) “The Sahara in Chad has high potential for meteorite finds, but until now only five meteorites have been…
Ait Saoun (EH3) Morocco: The Latest Enstatite Chondrite Fall
Chennaoui Aoudjehane H.* Agee C. Garvie L. A. J. Zigler K. Irving A. et al. METSOC 2026 abstract (PDF) “In this abstract, we are presenting the latest of an enstatite chondrite observed fall in Morocco,…
The Unusual Spiky Fusion Crust of the Wadsworth Meteorite Fall
Davoren T. F.* Gemma M. E. Ebel D. S. Childs N. J. Powell Z. L. METSOC 2026 abstract (PDF) “The recent Wadsworth monomict eucrite fall exhibits unusual spiky features in its fusion crust.”
Terrestrial Ages of Antarctic Meteorites: 2026
Nishiizumi K.* Welten K. C. Caffee M. W. Jull A. J. T. METSOC 2026 abstract (PDF) “Over 49,000 meteorites have been found and collected in Antarctica. More than 1,000 terrestrial age determinations were performed over…
Isotopic Analyses of Presolar Silicon Carbide Grains from Aguas Zarcas
Korsmeyer J. M.* Stephan T. Zheng Y. Nittler L. R. Fowler G. et al. METSOC 2026 abstract (PDF) “A sample of CM2 meteorite Aguas Zarcas was chemically treated to extract various presolar grain types. Isolated…
Presolar Silicon Carbide in Oued Chebeika 002 and Other CI Materials
Nittler L. R.* Meraviglia H. Alexander C. M. O’D. Kulenguski A. S. H. Stroud R. M. METSOC 2026 abstract (PDF) “Presolar grains from / New CI are typical / Unlike in Bennu.” “Two important observations…
The Winchcombe Meteorite: A Spectroscopic Perspective
Roselló Del Valle L.* Bennett C. Chazallon B. Fosca C. McKeown L. et al. METSOC 2026 abstract (PDF) “We characterize two aliquots of the Winchcombe meteorite, a chip and a particulate sample (<75 μm), which…
Understanding the Relationship Between CR Clan Meteorites Using Noble Gases to Infer Early Solar System Environments
Mijjum M.* Corrigan C. M. McCoy T. J. Tremblay M. M. Gooding T. et al. METSOC 2026 abstract (PDF) “We are measuring noble gases in CB chondrites to inform their exposure ages and early solar…
A Statistical Evaluation of Ordinary Chondrites, F Chondrites and IIE Irons
Kirby R. S.* King P. L. Tomkins A. G. METSOC 2026 abstract (PDF) “Here we use statistics to investigate ordinary chondrite classification and assess intergroup relationships. Statistical evidence supports both the establishment of the F…
The Lieksa Pallasite and Löpönvaara Iron: Unique Meteorite Discoveries from Eastern Finland
Kotomaa L.* Heinonen J. S. Kohout T. Luttinen A. METSOC 2026 abstract (PDF) “Over 100 iron-bearing suspected meteorites have been discovered in Lieksa, Finland since 2017. Two of them are the Lieksa pallasite and the…
The Complex Magmatic and Impact History of the Acapulcoite-Lodranite Parent Body: Insights from Silica-Rich Achondrites Denader 002, Nema 001 and Erg Atouila 001
Rider-Stokes B-G.* Desch S. Anand M. Stephant A. Hu S. et al. METSOC 2026 abstract (PDF) “Study of four silica-rich achondrite meteorites shows they likely share a common parent body and origin. Isotopic and mineral…
Non-Mercurian Origin of Ungrouped Achondrite Northwest Africa 7325 from (U-Th)/He Thermochronology
Diaz C. A. Rollin S. M.* Flowers R. M. Crow C. A. Metcalf J. R. METSOC 2026 abstract (PDF) “The preservation of (U-Th)/He ages in merrillite in the ungrouped achondrite NWA 7325 that are much…
Ti-Minerals Reveal Three-Stage Fluid Evolution on CY Chondrite Parent Body
Zhang A. C.* Wang S. Z. Du T. R. Chen J. N. Wen Y. Y. METSOC 2026 abstract (PDF) “We report the mineralogy of Ti-minerals in CY chondrite Dhofar 1988 and discuss its implication for…
16O poor cosmic spherules from near-Earth CY chondrite asteroidsOPEN ACCESS
Matthias Van Ginneken, Steven Goderis, Matthew J. Genge, Guido Jonker, Ryoga Maeda, Penelope J. Wozniakiewicz, Luigi Folco, Martin D. Suttle, Ian A. Franchi, Xuchao Zhao, Akira Yamaguchi, and Sophie Decrée Science Advances26 Jun 2026Vol 12,…
