Aqueous Alteration of Smectite in Acid-Sulfate Fluids: Implications for Clay Mineralogy at Gale Crater

Rudolph, A N ; Craig, P I ; Rampe, E B ; Hogancamp, J V

关键词: MONTMORILLONITE;    ACIDITY;    MINERALOGY;    MARS CRATERS;    CURIOSITY ROVER;   

RP-ID  :  JSC-E-DAA-TN53586,LPI Contrib. No. 2083-3001

学科分类：金属与冶金

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

The Chemistry and Mineralogy (CheMin) instrument on the Mars Science Laboratory (MSL) Rover, Curiosity, analyzes samples collected in Gale Crater, Mars using X-ray diffraction (XRD). One site of interest is the Oudam drill sample that CheMin analyzed on sols 1362, 1365, and 1369, which contains ~3 wt% phyllosilicate. XRD analysis of this phyllosilicate suggests a 2:1 Fe3+-smectite, akin to nontronite.