Program with Links to Abstracts

Lepore K. H. Belkhodja I.* Bickford K. Dyar M. D.

Prediction Accuracies of Major Element Compositions Derived from Spectra Collected Under a Range of Atmospheric Conditions Relevant to Planetary Exploration [#1050]
Spectra were collected under a range of atmospheric conditions to determine the accuracy of LIBS-derived major element predictions in different environments.

Lepore K. H. Bickford K.* Belkhodja I. Dyar M. D.

A Multi-Parameter LIBS Reference Database of Geological Materials: Opportunities for the Planetary Science Community [#1048]
A new reference database contains LIBS spectra collected under a range of conditions to provide calibration support to the planetary science community.

Pilleri P.* Chen Z. Cousin A. Maurice S. Forni O. et al.

Comparison of ChemCam, SuperCam and MarSCoDe LIBS instruments on Mars [#1351]
This presentation compares the performances of ChemCam, SuperCam and MaRsCoDe, three LIBS instruments onboard a martian rover.

Schröder S.* Rammelkamp K. Hansen P. B. Seel F. Cousin A. et al.

Semiquantitative Analysis of ChemCam and SuperCam LIBS Data with Spectral Unmixing [#2014]
Calibration-free derivation of semi-quantitative values from the martian ChemCam and SuperCam LIBS data for major and many minor and trace elements.

Gabriel T. S. J.* Anderson R. B. Wiens R.

Dynamic Uncertainty Estimation of LIBS Chemistry on Mars with Gaussian Process Regression [#2189]
We benchmarked a unique machine learning tool that dynamically quantifies uncertainty in elemental chemistry derived from SuperCam LIBS spectra on Mars.

Rammelkamp K.* Gasnault O. Bedford C. C. Dehouck E. Schröder S.

The Impact of Compositional Changes on Random Forest Predictions: Application to ChemCam LIBS Data from Gale Crater, Mars [#2131]
We present statistics on ChemCam LIBS data from Gale crater. Predictions of a random forest classifier are compared to unsupervised clustering of the same data.

Chen Z.* Maurice S. Forni O. Cousin A. Pilleri P. et al.

A Quality Index for Martian In-Situ LIBS Spectra [#1480]
We established an evaluation of LIBS data quality (LQI) based on the atmospheric carbon signal for three currently operating martian LIBS.

Labrie J.* Schmidt M. E. Kizovski T. V. Hernández-Montenegro J. D. Li A. Y. et al.

Estimating Modal Proportions of Major Rock-Forming Minerals in PIXL Targets on Mars Using Supervised Image Classification [#1586]
We present pyroxene-olivine-feldspar phase maps of PIXL abrasion targets generated using supervised image classification of multispectral MCC imagery.

Knight A. L.* VanBommel S. J. Elam W. T. Heirwegh C. M. Pedersen D. A. K. et al.

Tracking Changes in Dust Volume on the Mars 2020 PIXL Polytetrafluoroethylene Calibration Target: Implications for Elemental Flight Calibration [#2018]
We present results from tracking changes in dust volume on the PIXL PTFE calibration target; dust has changed largely in areal coverage rather than thickness.

Heirwegh C. M.* Das A. Ganly B. G. Elam W. T. Liu Y. et al.

XRF Research Developments for the Calibration of PIXL [#1708]
Discusses elemental analysis accuracy constraints of PIXL — the Planetary Instrument for X-ray Lithochemistry and new efforts to enhance its calibration.

O'Neil L. P.* Tice M. Kizovski T. Zawaski M. J. Brown A. J.

Size of Heavy Mineral Grains from PIXL Datasets for Characterization of Sedimentary Environments [#2498]
We present a method of determining grain size using PIXL datasets. It relies on the inclusion of sparse, geochemically distinct minerals in a sedimentary rock.

Tice M. M.* O'Neil L. P. Clark B. C. Ganly B. P. Jones M. W. M. et al.

PIXL on Perseverance as a Complete X-ray Spectroscopic Instrument: Analyzing X-ray Fluorescence, Scattering, and Diffraction in Martian Rocks [#2659]
We introduce techniques to analyze data from the PIXL instrument on the Perseverance rover useful for anyone working with PIXL data in the PDS.

Yanez K. L.* Bishop J. L. Fenton L. K.

Variations in the Morphology and Mineralogy of Mars' Olympia Undae Sand Sea [#1390]
Observation of morphology and mineralogy changes of the gypsum-rich sediments of Olympia Undae sand sea from east to west due to wind and seasonal processes.

Alvarez C. Laserna J.* Moros J. Purohit P. Angel S. M. et al.

Acoustics of Martian Geological Material from the Shock Waves of the Laser-Induced Sparks of Supercam [#1995]
Acoustic signals in Mars related to the geological unit “Séítah” and “Máaz” were analyzed focusing on rocks and abraded patches populations.

Lomashvili A.* Canal A. v. Rammelkamp K.

Rock Classification via Transfer Learning in the Scope of ChemCam RMI Image Data [#2017]
This study analyzes and classifies rock context images, taken by Mars Science Laboratory rover Curiosity’s ChemCam instrument(RMI), using transfer learning.

Valantinas A.* Mustard J. F. Chevrier V. Pommerol A. Mangold N. et al.

Orbital Evidence of Ferrihydrite in the Martian Dust: Implications for the Ancient Climate on Mars [#2174]
Martian dust may be a product of ancient ferrihydrite-rich rocks that formed during cold and wet periods on early Mars.

Gasda P. J.* Crossey L. Das D. Schwenzer S. P. Turner S. et al.

The Nature of Diagenetic Vein- and Nodule-Forming Brines in Glen Torridon, Gale Crater, Mars [#2188]
Applying models toward a greater understanding of brines that may have altered bedrock in Gale crater, Mars.

King P. L.* Renggli C. J. Oborski E. M. Hunt T.

Non-Aqueous Formation of Sulfur-Rich Amorphous Materials on Mars [#2807]
Sulfur-bearing amorphous phases may form in moderate to high temperatures in volcanic and impact processes.

Viviano C. E.*

Update on the Development of the CSI: CRISM Spectral Interrogator [#2236]
An update on the software being developed to streamline the analysis of CRISM spectral cubes; will be made available to the greater Mars science community.

Lasue J.* Meslin P. Y. Cousin A. Forni O. Anderson R. et al.

SuperCam First Shots: Dust Composition and Variability [#2244]
We show the similarity in composition between the eolian dust at Jezero and at Gale and assess its locational variability and thickness.

Huidobro J. Coloma L. Población I. Arana G.* Aramendia J. et al.

Temperature Influence on Raman Spectra on Calcium and Potasium Sulfates on the Martian Surface [#2364]
The influence of temperature of Raman spectra of Ca and K sulfates was studied to be able to predict the shifts of the signals depending on the temperature.

Ye B.* Michalski J. R. Zhu J. Li Y. Lin H. et al.

Multiscale Spectroscopic Characterization of Serpentinization and Carbonation Within The Mangai Ophiolite Complex with Implications for Mars [#1227]
The mineralogy and multiscale spectroscopy of serpentinization and carbonation on the Mangai chrysotile mine, NW Tibet Plateau, are investigated.

Essunfeld A.* Comellas J. M. Gasda P. J. Legett C. Lanza N. et al.

Monte Carlo Methods for Visualizing Uncertainty on Ternary Plots with ChemCam and SuperCam Data [#2900]
Bootstrapped ternaries? / Triaxial ellipsoids / Are tricky to plot!

Wilson J. T.*

Improved Resolution Maps of Mars Odyssey Neutron Spectrometer Data: Implications for Low-Latitude Hydrogen Abundances at the Medusae Fossae Formation [#2974]
Image reconstruction is used to improve the resolution of MONS thermal and epithermal neutron data to confirm that low-latitude anomalies are really due to H.

Brossier J.* Altieri F. De Sanctis M. C. Frigeri A. Ferrari M. et al.

In-Depth Spectral Analysis of Clay-Bearing Outcrops in West Circum-Chryse Planitia, Mars: Lunae Planum and Tempe Terra [#1057]
We report a detailed spectral survey of clay-rich outcrops found in west Chryse basin, and compare with key targets on Mars (Oxia Planum, Mawrth Vallis, etc.).