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Nardelli L.* Brunetto R. Pilorget C. Jiang T. Le Pivert-Jolivet T. et al.

Heterogeneities of the OH-Rich Phases in Near Infrared Hyperspectral Analyses of Ryugu Samples by MicrOmega Within the ISAS Curation Facility [#6153]
Ryugu samples analyzed by the near hyperspectral microscope MicrOmega at ISAS/JAXA, reveal a 2nd OH band at 2.85 μm, suggesting residual H2O or a different -OH group. This study will be later compared to Bennu samples also measured by MicrOmega.

Maurel C.* Gattacceca J. Uehara M.

The Paleomagnetic Record of Ryugu Samples and a Simple Test for Identifying Potential Magnetic Contamination [#6308]
Ryugu's parent body experienced aqueous alteration in a weak to null magnetic field, consistent with a distant formation location. The magnetic remanence over susceptibility ratio is a fast, fully non-destructive indicator of magnetic contamination.

Plummer J.* Montoya M. Snead C. J. Lunning N. Funk R. C. et al.

OSIRIS-REx Sample Processing Tools and Techniques Utilized During Preliminary Examination [#6174]
The NASA Johnson Space Center, OSIRIS-REx curation team observed and noted the physical behaviors of asteroid Bennu while sample processing during the preliminary examination period. Unique tools and techniques were used while maintaining pristinity.

Seifert L. B.* Erickson T. Keller L. P. Thomas-Keprta K. Le L. et al.

Cathodoluminescence Microscopy and Spectroscopy of Apatite Grains in Bennu Samples [#6208]
Here we present the results of coordinated CL imaging, spectroscopy, and EBSD measurements of apatite grains in Bennu samples to investigate their internal structure, distribution of trace elements and REEs, and crystallinity.

Chaves L. C.* Haenecour P. Barnes J. J. Hill D. Zega T. J. et al.

Evaluating the Chemical Composition of Sulfides from Asteroid Bennu: Preparation for Sulfur Isotopic Analysis [#6229]
In this study, we determined the Fe/S ratios of Fe-sulfides from Bennu and compared them with ratios of Fe-sulfides from CI and CM chondrites to have a better understanding of the degree of aqueous alteration experienced by Bennu’s parent body.

Harrison C. S.* King A. J. Jones R. H. Russell S. S. Connolly H. C. et al.

Fe-Sulfides in Asteroid Bennu: Insights into Conditions of Aqueous Alteration [#6409]
We characterize coarse (>10 μm) Fe-sulfide grains in polished sections of three Bennu particles to constrain the conditions of aqueous alteration.

Keller L. P.* Seifert L. B. Thomas-Keprta K. Le L. Clemett S. J. et al.

Transmission Electron Microscopy of Carbonaceous Matter in Bennu Aggregate Samples [#6385]
We characterize the two dominant forms of carbonaceous matter in Bennu samples observed by transmission electron microscopy, nanoglobules and diffuse material, both are N-bearing.

Nguyen A. N.* Thomas-Keprta K. Le L. Clemett S. J. Keller L. P. et al.

The Presolar Grain Content of Morphologically Distinct Particles from Asteroid Bennu [#6448]
We compare the presolar grain contents of Bennu particles that have distinct morphologies.

Righter K.* Thomas-Keprta K. Le L. Gorce J. Keller L. P. et al.

Characterization of Bennu Particles for Morphologic, Textural, Lithologic, and Mineralogic Diversity [#6235]
Twelve individual Bennu particles have been studied by SEM and EMPA to document morphologic, textural, and mineralogic variation within this 1 to 2 mm size range.

Thompson M. S.* Keller L. P. Thomas-Keprta K. Le L. Rahman Z. et al.

Evidence for Solar Wind Space Weathering in Samples from Asteroid Bennu [#6389]
Here we present evidence for solar wind space weathering in samples from asteroid Bennu. We will describe microstructural and chemical evidence for solar wind irradiation and provide evidence for the detection of solar wind volatiles.

Brunetto R.* Nakamura T. Lantz C. Fukuda Y. Aléon-Toppani A. et al.

IR Spectra of Ryugu’s Anhydrous Ingredients Compared with Primitive Dust from the Outer Solar System [#6031]
The IR analysis of Ryugu’s anhydrous grains shows that some of them are rich in amorphous silicates, with a mineral composition similar to that of some anhydrous primitive asteroids, comets, and interplanetary dust particles of cometary origin.

Aléon-Toppani A.* Brunetto R. Dionnet Z. Rubino S. Baklouti D. et al.

Correlated IR-SEM-TEM Studies of Three Different Grains from Ryugu: From the Initial Material to Post-Accretional Processes [#6038]
Based on the correlated IR/SEM/TEM studies of three different grains of Ryugu, we propose a scenario of aqueous alteration and an outer solar system origin common with that of cometary material for the Ryugu parent body.

Renggli C. J.* Hilchenbach M. Stenzel O. Krupp N. Walton C. R. et al.

The Case for APOSSUM, a Fast Asteroid Apophis Sample Return Mission [#6024]
On April 13, 2029, asteroid Apophis will pass Earth closely. We propose APOSSUM (APOphiS Surface saMpler), Europe's first sample return from an asteroid, with an unprecedented short mission duration of one year from launch to sample return.

Shirley K. A.* Bowles N. E.

Laboratory Experiments to Recreate Asteroid Surface Thermal Conditions for Remote Sensing [#6414]
We performed laboratory experiements using asteroid simulants and meteoritic materials to investigate possible thermal conditions on asteroid surfaces.