2021
DOI: 10.3390/min11080847
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A Review of the Phyllosilicates in Gale Crater as Detected by the CheMin Instrument on the Mars Science Laboratory, Curiosity Rover

Abstract: Curiosity, the Mars Science Laboratory (MSL) rover, landed on Mars in August 2012 to investigate the ~3.5-billion-year-old (Ga) fluvio-lacustrine sedimentary deposits of Aeolis Mons (informally known as Mount Sharp) and the surrounding plains (Aeolis Palus) in Gale crater. After nearly nine years, Curiosity has traversed over 25 km, and the Chemistry and Mineralogy (CheMin) X-ray diffraction instrument on-board Curiosity has analyzed 30 drilled rock and three scooped soil samples to date. The principal strateg… Show more

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Cited by 33 publications
(30 citation statements)
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“…For some reflections (e.g., 02 l ) the d values are nearly independent of desiccation state because their values are non‐ or weakly dependent on the interlayer spacing. Smectite‐bearing samples acquired by Curiosity and measured by CheMin within Glen Torridon were quantitatively modeled with a least squares fitting procedure (Reitveld refinement) using laboratory transmission XRD overlay patterns for fully collapsed smectites as represented in Figure 23 by SWa‐1_des and Garfield_des (Bristow et al., 2021; Rampe et al., 2020; Thorpe et al., 2022; Tu et al., 2021). Taking CRISM spectral and CheMin XRD data together, we conclude that Jura ferric‐rich smectite at unit RU_a (Jura member) is either (1) fully desiccated and the relatively weak H 2 O spectral feature at 1.92 μm results from another phase or adsorbed H 2 O or (2) is substantially desiccated and the 1.92 μm spectral feature results from residual interlayer H 2 O at concentrations not detectable by CheMin XRD.…”
Section: Spectral Identification Of Desiccated Nontronitementioning
confidence: 99%
“…For some reflections (e.g., 02 l ) the d values are nearly independent of desiccation state because their values are non‐ or weakly dependent on the interlayer spacing. Smectite‐bearing samples acquired by Curiosity and measured by CheMin within Glen Torridon were quantitatively modeled with a least squares fitting procedure (Reitveld refinement) using laboratory transmission XRD overlay patterns for fully collapsed smectites as represented in Figure 23 by SWa‐1_des and Garfield_des (Bristow et al., 2021; Rampe et al., 2020; Thorpe et al., 2022; Tu et al., 2021). Taking CRISM spectral and CheMin XRD data together, we conclude that Jura ferric‐rich smectite at unit RU_a (Jura member) is either (1) fully desiccated and the relatively weak H 2 O spectral feature at 1.92 μm results from another phase or adsorbed H 2 O or (2) is substantially desiccated and the 1.92 μm spectral feature results from residual interlayer H 2 O at concentrations not detectable by CheMin XRD.…”
Section: Spectral Identification Of Desiccated Nontronitementioning
confidence: 99%
“…Mars (SAM) evolved gas analyses (EGAs) revealed the temperature of volatiles (particularly H 2 O) from minerals. 30,44 The data from Curiosity had confirmed the existence of abundant MCMs 15 and distinguished clay minerals and sulfates and oxides at several sites inside Gale Crater. 30 The 2:1 clay minerals have been identified by CheMin data with Co Kα radiation particularly in the 8−11°2θ(12−9.4 Å) (Figure 4).…”
Section: Detection Of Clay Minerals Bymentioning
confidence: 88%
“…28 The interplanar spacing d 001 = 9.6 Å has also been observed in the Highfield and Rockhall samples. 44 Generally, a single instrumental analysis cannot result in definite and convincing conclusion data on clay minerals on Mars. VNIR spectra from the Mars orbiter suggest that qualitatively there are a variety of MCMs, but their amount is uncertain.…”
Section: Detection Of Clay Minerals Bymentioning
confidence: 99%
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“…Among the abundant alteration phases that have been detected on Mars from orbit (e.g., Bibring et al, 2006; Ehlmann & Edwards, 2014; Lasue et al, 2019; Mustard, 2019), at every landing site (e.g., Bristow et al., 2018; Jolliff et al, 2019; Kounaves & Oberlin, 2019; Mittlefehldt et al, 2019; Sutter et al, 2019; Rampe et al., 2020; Tu et al, 2021), and in Martian meteorites (e.g., Bridges et al, 2019; Filiberto et al, 2014; Giesting & Filiberto, 2016; McCubbin et al, 2013; Sautter et al, 2006), hydrous minerals such as prehnite, serpentine, epidote, and zeolites—spectrally observed from orbital measurements—are indicative of low‐grade metamorphic conditions (Ehlmann et al, 2009, 2011; McSween et al, 2015; Viviano et al, 2013). Phase diagram and thermodynamic modeling studies suggest that these minerals formed at elevated temperatures (>150 °C) either along a normal geothermal gradient or as a result of impact‐ or volcanic‐induced hydrothermal systems (McSween et al, 2015; Schwenzer & Kring, 2013; Semprich et al, 2019).…”
Section: Introductionmentioning
confidence: 99%