CHEMISTRY OF MANGANESE-BEARING MATERIALS AT THE GROKEN DRILL SITE, GALE CRATER, MARS

Nina L. Lanza (1) , Patrick Gasda (1) , Essunfeld Ari (1) , Jade Comellas (1) , Gwénaël Caravaca (2) , Elizabeth B. Rampe (3) , Amy J. Williams (4) , Pierre-Yves Meslin (5) , Erwin Dehouck (6) , Nicolas Mangold (2) , William Rapin (5) , Robert M Hazen (7) , Woodward W. Fischer (8) , Ann M. Ollila (1) , Christopher House (9) , Roger C. Wiens (1)

1 LANL - Los Alamos National Laboratory
2 LPG - Laboratoire de Planétologie et Géodynamique [UMR 6112]
3 JSC - NASA Johnson Space Center
4 UF - University of Florida [Gainesville]
5 IRAP - Institut de recherche en astrophysique et planétologie
6 LGL-TPE - Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement
7 Carnegie Institution for Science
8 Division of Geological and Planetary Sciences [Pasadena]
9 Penn State - Pennsylvania State University

In July 2020, the Curiosity rover encountered a region of bedrock that contained an abundance of layered nodular features and highly unusual Mn- and sometimes P-rich chemistries (Fig.1a) in Glen Torridon (GT), a phyllosilicate-rich mudstone to sandstone deposit [1]. This sampling location was originally targeted at a distance as a site for the Sample Analysis at Mars (SAM) instrument to perform one of its two tetramethylammonium hydroxide (TMAH) wet chemistry experiments [2] in the hopes that the new location would provide similar rocks to the previously analyzed clay-rich Glen Etive targets at approximately the same elevation [3].

Mots clés: Gale crater; Mars; Groken; drill; Glen Torridon; Manganese

Domaines: Stratigraphie; Planète et Univers [physics]; Sciences de la Terre; Planétologie; Géochimie

Nina L. Lanza, Patrick Gasda, Essunfeld Ari, Jade Comellas, Gwénaël Caravaca, et al.. CHEMISTRY OF MANGANESE-BEARING MATERIALS AT THE GROKEN DRILL SITE, GALE CRATER, MARS. 52nd Lunar and Planetary Science Conference, Lunar and Planetary Institute, Mar 2021, The Woodlands, United States. ⟨hal-03143136⟩