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Returned Samples from Asteroids 3
Tuesday, July 30, 2024, 8:30 AM
Albert II Auditorium
Chairs:
Lisette Melendez
Zack Gainsforth
Zack Gainsforth
8:30 AM
Ishimaru K.*
Lauretta D. S.
Connolly H. C.
Pajola M.
Tusberti F.
et al.
Shape Analysis of Returned Sample Particles and Boulders of Asteroid Bennu
[#6184]
We compared Bennu boulders to samples by 2D and 3D shape analysis. Results showed similar polygonal outlines, with some stones resembling a columnar mosaic, potentially due to phyllosilicate abundance. More analysis is needed for confirmation.
We compared Bennu boulders to samples by 2D and 3D shape analysis. Results showed similar polygonal outlines, with some stones resembling a columnar mosaic, potentially due to phyllosilicate abundance. More analysis is needed for confirmation.
8:45 AM
Smith L. R.*
Haenecour P.
Barnes J. J.
Hill D.
Ong I. J.
et al.
Pseudomorph Melt Spherules in Asteroid Bennu and Aqueously Altered Meteorites
[#6075]
We identified small circular inclusions in samples of asteroid Bennu and the Tagish Lake meteorite that consist of phyllosilicates surrounding phosphide, nitride, and sulfide grains, and are likely aqueously altered remnants of melt spherules.
We identified small circular inclusions in samples of asteroid Bennu and the Tagish Lake meteorite that consist of phyllosilicates surrounding phosphide, nitride, and sulfide grains, and are likely aqueously altered remnants of melt spherules.
9:00 AM
Crowther S. A.*
Gilmour J. D.
Cowpe J. S.
Fawcett L.
Barnes J. J.
et al.
Initial Xenon Isotopic Analysis of Individual Intermediate-Sized Particles from the OSIRIS-REx Sample of Asteroid Bennu
[#6277]
The bulk xenon isotopic composition of a single Bennu particle is very similar to average carbonaceous chondrite (AVCC) xenon. Low temperature heating steps show excess 129Xe, indicating the potential to determine an I-Xe age.
The bulk xenon isotopic composition of a single Bennu particle is very similar to average carbonaceous chondrite (AVCC) xenon. Low temperature heating steps show excess 129Xe, indicating the potential to determine an I-Xe age.
9:15 AM
Marty B.*
Zimmermann L.
Füri E.
Bekaert D. V.
Barnes J. J.
et al.
Noble Gases in Individual Particles from Bennu and Ryugu: Investigating the Origin of Garish Asteroidal Material
[#6428]
We report all noble gas (He to Xe) data obtained on eight particles from asteroid Bennu returned by the OSIRIS-REx mission and on one particle from asteroid Ryugu returned by the Hayabusa2 mission.
We report all noble gas (He to Xe) data obtained on eight particles from asteroid Bennu returned by the OSIRIS-REx mission and on one particle from asteroid Ryugu returned by the Hayabusa2 mission.
9:30 AM
Busemann H.*
Krietsch D.
Maden C.
Barnes J. J.
Nguyen A. N.
et al.
Noble Gases in Samples Returned from Asteroids Ryugu and Bennu
[#6453]
We present noble gas data from new Ryugu and Bennu particles, discuss their similarities and differences, their relevance for understanding parent body alteration and the asteroids' dynamical histories, and compare them with carbonaceous chondrites.
We present noble gas data from new Ryugu and Bennu particles, discuss their similarities and differences, their relevance for understanding parent body alteration and the asteroids' dynamical histories, and compare them with carbonaceous chondrites.
9:45 AM
Van den Neucker A.*
Hamann C.
Bonato E.
Maturilli A.
Alemano G.
et al.
The Structural and Spectroscopic Effects of Space Weathering of C-Type Asteroid Regolith Documented by Ryugu Sample A0112
[#6413]
Non-destructive spectral and microchemical analysis was performed on a Ryugu grain A0112. Our aim is to assess the effects of space weathering, the alteration of airless planetary surfaces by micrometeoroid bombardment, and the influx of solar wind.
Non-destructive spectral and microchemical analysis was performed on a Ryugu grain A0112. Our aim is to assess the effects of space weathering, the alteration of airless planetary surfaces by micrometeoroid bombardment, and the influx of solar wind.
*presenter
