 | | Journal (article/letter/editorial) | | Mission of Exploration at Gale Crater, Mars Oblique southeast view of Gale Crater. Mt. Sharp rises centrally...2014; Vaniman et al. 2014). During its nominal one-Mars-year mission (23 Earth months), Curiosity drilled...thousands of images that provided KEYWORDS : Mars, Gale Crater, water, geochemistry, mineralogy, habitability...very productive. anded missions to the surface of Mars have long sought to determine the material properties...used to help evaluate ancient habitability. The Mars Science Laboratory missionâwith its Curiosity roverâseeks |  | | Journal (article/letter/editorial) | | the Alpha Particle X-ray Spectrometer on NASAâs Mars Rovers Ralf Gellert1, Benton C. Clark III2, and...payload of the four rovers that NASA has landed on Mars. It uses 244Cm sources for a combination of PIXE...undergone significant changes from Pathfinder KEYWORDS : Mars geochemistry, XRF, PIXE, APXS, MER, MSL, chemostratigraphy...alpha particle X-ray spectrometer (APXS) in the Mars thin alpha detector in the center of a ring of 244Cm...emitted 5.5 megaelectron kind that has landed on Mars. After Pathfi nder (1997) and volt alpha particles |  | | Journal (article/letter/editorial) | | Determining Mineralogy on Mars with the CheMin X-Ray Diffractometer The CheMin team logo illustrating...illustrating the diffraction of minerals on Mars. Robert T. Downs1 and the MSL Science Team 1811-5209/15/0011-0045$2...diffraction, Mars, Gale Crater, habitable environment, CheMin, oxides (hematite and akaganeite), Curiosity...temperature, pressure, and The Mars rover Curiosity landed in Gale Crater on August ambient chemical conditions...the principal goals of the mission is to identify Mars. A source rock, such as basalt, may be transformed |  | Sheppard, Rachel Y., Thorpe, Michael T., Fraeman, Abigail A., Fox, Valerie K., Milliken, Ralph E. (2021) Merging Perspectives on Secondary Minerals on Mars: A Review of Ancient Water-Rock Interactions in Gale Crater Inferred from Orbital and In-Situ Observations. Minerals, 11 (9) 986 doi:10.3390/min11090986 | Journal (article/letter/editorial) | | Secondary Minerals on Mars: A Review of Ancient Water-Rock Interactions in Gale Crater Inferred from Orbital...Secondary Minerals on Mars: A Review of Ancient Water-Rock Interactions in Gale Crater Inferred from Orbital...secondary minerals detected on Mars from orbit and the surface, including in the Mars Science Laboratory Curiosity...at Gale crater. These records of aqueous activity have been investigated in detail in Gale crater, where...strata for more sulfate-rich terrains, while the Mars 2020 Perseverance rover is in its early exploration |  | Peretyazhko, T.S., Fox, A., Sutter, B., Niles, P.B., Adams, M., Morris, R.V., Ming, D.W. (2016) Synthesis of akaganeite in the presence of sulfate: Implications for akaganeite formation in Yellowknife Bay, Gale Crater, Mars. Geochimica et Cosmochimica Acta, 188. 284-296 doi:10.1016/j.gca.2016.06.002 | Journal (article/letter/editorial) | | com/locate/gca Synthesis of akaganeite in the presence of sulfate: Implications for akaganeite formation in Yellowknife...Yellowknife Bay, Gale Crater, Mars T.S. Peretyazhko a,â, A. Fox b, B. Sutter a, P.B. Niles c, M. Adams d...Abstract Akaganeite, a Cl-bearing Fe(III) (hydr)oxide, has been recently discovered in Yellowknife Bay in Gale...Gale crater on Mars by the Mars Science Laboratory (MSL) Curiosity Rover. Akaganeite was associated with...minerals at Yellowknife Bay indicating that sulfate ions could be present in solution during akaganeite formation |  | Peretyazhko, Tanya S., Pan, Michelle J., Ming, Douglas W., Rampe, Elizabeth B., Morris, Richard V., Agresti, David G. (2019) Reaction of Akaganeite with Mars-Relevant Anions. ACS Earth and Space Chemistry, 3 (2). 314-323 doi:10.1021/acsearthspacechem.8b00173 | Journal (article/letter/editorial) | | http://pubs.acs.org/journal/aesccq Reaction of Akaganeite with Mars-Relevant Anions Tanya S. Peretyazhko,*,â ...articles. ⥠S Supporting Information * ABSTRACT: Akaganeite is an Fe(III) (hydr)oxide with a tunnel structure...present in akaganeite tunnels may permit characterization of solution compositions in which akaganeite precipitated...existed. Akaganeite has been reported in several locations on Mars, including Yellowknife Bay in Gale crater...in martian akaganeite, synthetic akaganeite (72 mg/g total Clâ content) was reacted with Mars-relevant |  | Wiens, Roger C., Rubin, David M., Goetz, Walter, FairĂ©n, Alberto G., Schwenzer, Susanne P., Johnson, Jeffrey R., Milliken, Ralph, Clark, Ben, Mangold, Nicolas, Stack, Kathryn M., Oehler, Dorothy, Rowland, Scott, Chan, Marjorie, Vaniman, David, Maurice, Sylvestre, Gasnault, Olivier, Rapin, William, Schroeder, Susanne, Clegg, Sam, Forni, Olivier, Blaney, Diana, Cousin, Agnes, PayrĂ©, Valerie, Fabre, Cecile, Nachon, Marion, Le Mouelic, Stephane, Sautter, Violaine, Johnstone, Stephen, Calef, Fred, Vasavada, Ashwin R., Grotzinger, John P. (2017) Centimeter to decimeter hollow concretions and voids in Gale Crater sediments, Mars. Icarus, 289. 144-156 doi:10.1016/j.icarus.2017.02.003 | Journal (article/letter/editorial) | | decimeter hollow concretions and voids in Gale Crater sediments, Mars Roger C. Wiens a,â, David M. Rubin b...Keywords: Concretions Voids Spherules Nodules Gale crater Mars Mars science laboratory a b s t r a c t Voids...along the traverse of the Curiosity rover in Gale crater, Mars. These hollow spherical features are signiïŹcantly...precipitates for other terrestrial concretions. The Gale sediments differ from terrestrial sandstones in...Elsevier Inc. All rights reserved. 1. Introduction The Mars Science Laboratory (MSL) rover, Curiosity, is the |  | Bristow, T. F., Bish, D. L., Vaniman, D. T., Morris, R. V., Blake, D. F., Grotzinger, J. P., Rampe, E. B., Crisp, J. A., Achilles, C. N., Ming, D. W., Ehlmann, B. L., King, P. L., Bridges, J. C., Eigenbrode, J. L., Sumner, D. Y., Chipera, S. J., Moorokian, J. M., Treiman, A. H., Morrison, S. M., Downs, R. T., Farmer, J. D., Marais, D. D., Sarrazin, P., Floyd, M. M., Mischna, M. A., McAdam, A. C. (2015) The origin and implications of clay minerals from Yellowknife Bay, Gale crater, Mars. American Mineralogist, 100 (4) 824-836 doi:10.2138/am-2015-5077ccbyncnd | Journal (article/letter/editorial) | | implications of clay minerals from Yellowknife Bay, Gale crater, Marsâ k Thomas F. Bristow1,*, David L....73118, U.S.A. 13 Lunar and Planetary Institute, 3600 Bay Area Boulevard, Houston, Texas 77058, U.S.A. 14 Department...View, California 94043, U.S.A. 1 2 Abstract The Mars Science Laboratory (MSL) rover Curiosity has documented...fluvio-lacustrine strata at Yellowknife Bay (YKB), an embayment on the floor of Gale crater, approximately 500...minimal inputs of detrital clay minerals from the crater walls and rim. Early diagenetic fabrics suggest |  | | Journal (article/letter/editorial) | | Ferrous Iron: Implications for Iron Oxide Formation on Mars Kaushik Mitra 1 , Eleanor L. Moreland 1 and Jeffrey...oxidant on Mars. Since the amount of oxychlorine species (perchlorate and chlorate) detected on Mars is limited...capacity of chlorate to produce Fe(III) minerals in Mars-relevant fluids, via oxidation of dissolved Fe(II)...capacity of chlorate to generate iron oxides on Mars. Keywords: Mars; oxychlorine; iron oxides; chlorate; oxidation...Introduction The dominant reddish hue characteristic of Mars is caused by the distribution of various Fe(III)-oxides |  | Farley, K.A., Martin, P., Archer, P.D., Atreya, S.K., Conrad, P.G., Eigenbrode, J.L., FairĂ©n, A.G., Franz, H.B., Freissinet, C., Glavin, D.P., Mahaffy, P.R., Malespin, C., Ming, D.W., Navarro-Gonzalez, R., Sutter, B. (2016) Light and variable 37 Cl/ 35 Cl ratios in rocks from Gale Crater, Mars: Possible signature of perchlorate. Earth and Planetary Science Letters, 438. 14-24 doi:10.1016/j.epsl.2015.12.013 | Journal (article/letter/editorial) | | variable 37 Cl/35 Cl ratios in rocks from Gale Crater, Mars: Possible signature of perchlorate K.A. Farley...Available online xxxx Editor: T.A. Mather Keywords: Mars Cl isotopes perchlorate evolved gas analysis *...as-yet-unknown phases in sedimentary rocks and sand in Gale Crater provide unexpected insights to the Martian surïŹcial...from two samples of the Sheepbed mudstone (Yellowknife Bay study area) are analytically indistinguishable...perchlorate from the Atacama Desert. Some of the Gale Crater ÎŽ 37 Cl values are more negative than those in |  | | Journal (article/letter/editorial) | | A kinetic analysis of the transformation from akaganeite to hematite: An in situ time-resolved X-ray diffraction...A kinetic analysis of the transformation from akaganeite to hematite: An in situ time-resolved X-ray diïŹraction...A KINETIC ANALYSIS OF THE TRANSFORMATION FROM AKAGANEITE TO HEMATITE: AN IN SITU TIME-RESOLVED X-RAY ...MANUSCRIPT Abstract The nucleation and growth of akaganeite and its transformation to hematite under PT...synchrotron X-ray diffraction. In each experiment, akaganeite was the first phase to form and hematite was |  | | Journal (article/letter/editorial) | | Images from Curiosity: A New Look at Mars Self-portrait of the Curiosity rover, taken on sol 177 at the...DOI: 10.2113/gselements.11.1.27 T he surface of Mars has been sculpted by flowing water and shaped by...the first two years of its exploration of Gale Crater, the Mars Science Laboratory missionâs Curiosity rover...abundant geologic evidence that water once existed on Mars both within the subsurface and, as least episodically...past led to the selection of Gale Crater as the landing site for the Mars Science Laboratory (MSL) mission |  | | Journal (article/letter/editorial) | | 0000-0001-9311-977X) Chlorate as a Potential Oxidant on Mars: Rates and Products of Dissolved Fe(II) Oxidation...Points: ï· Chlorate oxidizes dissolved Fe(II) in Mars-relevant fluids at both near-neutral and acidic...chemistry ï· Chlorate may be an important oxidant on Mars in both ancient and modern systems This article...ability of oxychlorine species to serve as oxidants on Mars has largely been unexplored. While perchlorate is...inert, chlorate may be a critical Fe(II) oxidant on Mars. However, the time scale over which chlorate may |  | | Journal (article/letter/editorial) | | geochemical implications of their possible presence on Marsâ Janice L. Bishop1,*, Enver Murad2 and M. Darby...and iron alteration on Earth and may be present on Mars as well. These minerals have a tunnel structure...and schwertmannite were present on the surface of Mars they could enable transport of H2O from the near-surface...oxyhydroxide, reflectance spectroscopy, IR spectroscopy, Mars Introduction AkaganĂ©ite has recently been identified...identified in a few small (<1 km2) locations on Mars through visible/near-infrared (VNIR) spectra acquired |  | Jackson, R.S., Wiens, R.C., Vaniman, D.T., Beegle, L., Gasnault, O., Newsom, H.E., Maurice, S., Meslin, P.-Y., Clegg, S., Cousin, A., Schröder, S., Williams, J.M. (2016) ChemCam investigation of the John Klein and Cumberland drill holes and tailings, Gale crater, Mars. Icarus, 277. 330-341 doi:10.1016/j.icarus.2016.04.026 | Journal (article/letter/editorial) | | and Cumberland drill holes and tailings, Gale crater, Mars R.S. Jackson a,â, R.C. Wiens b, D.T. Vaniman...Experimental techniques Mars Mars, surface a b s t r a c t The ChemCam instrument on the Mars Science Laboratory...lowest exposed member of the Yellowknife Bay formation. Yellowknife Bay is composed of detrital basaltic... 1. Introduction The ChemCam instrument on the Mars Science Laboratory (MSL) rover, also called Curiosity...Chemistry and Mineralogy (CheMin) and Sample Analysis at Mars (SAM); furthermore, â Corresponding author. Tel |  | Rampe, Elizabeth B., Morris, Richard V., Archer, P. Douglas, Agresti, David G., Ming, Douglas W. (2016) Recognizing sulfate and phosphate complexes chemisorbed onto nanophase weathering products on Mars using in-situ and remote observationsk. American Mineralogist, 101 (3) 678-689 doi:10.2138/am-2016-5408ccbyncnd | Journal (article/letter/editorial) | | chemisorbed onto nanophase weathering products on Mars using in-situ and remote observationsk Elizabeth...Abstract Orbital and in-situ data from the surface of Mars indicate that nanophase weathering products are...instruments similar to those on orbital and landed Mars missions (including Xâray diffraction, evolved gas...detected with the Sample Analysis at Mars (SAM) instrument on the Mars science laboratory Curiosity rover...presence of chemisorbed anionic complexes. Keywords: Mars, nanophase minerals, chemisorption, spectroscopy |  | Treiman, A. H., Morris, R. V., Agresti, D. G., Graff, T. G., Achilles, C. N., Rampe, E. B., Bristow, T. F., Ming, D. W., Blake, D. F., Vaniman, D. T., Bish, D. L., Chipera, S. J., Morrison, S. M., Downs, R. T. (2014) Ferrian saponite from the Santa Monica Mountains (California, U.S.A., Earth): Characterization as an analog for clay minerals on Mars with application to Yellowknife Bay in Gale Crater. American Mineralogist, 99 (11) 2234-2250 doi:10.2138/am-2014-4763 | Journal (article/letter/editorial) | | analog for clay minerals on Mars with application to Yellowknife Bay in Gale Craterâ Allan H. Treiman1,*, Richard...Robert T. Downs10 Lunar and Planetary Institute, 3600 Bay Area Boulevard, Houston, Texas 77058, U.S.A. 2 ARES...smectites discovered on Mars by the CheMin Xâray diffraction instrument onboard the Mars Science Laboratory...be inferred (in some cases) from VNIR spectra of Mars obtained from orbit, and, in any case, ferrian saponite...diffraction, MSL, Mars, Griffith Park Introduction The core objective of the Mars Science Laboratory |  | | Journal (article/letter/editorial) | | in freshwater ferromanganese nodules from Green Bay, Lake Michigan, with implications for the adsorption...freshwater ferromanganese nodules (FFN) from Green Bay, Lake Michigan, and adsorbed arsenate have been investigated...functional theory (DFT). The samples from northern Green Bay can be divided into two types: Fe-Mn nodules and...Callender 1968). Glaciated regions around the Green Bay, Lake Michigan, contain sediments derived from Precambrian...contribute to the formation and chemistry of the Green Bay FFN on the surficial sediments, where sedimentation |  | Greenberger, Rebecca N., Mustard, John F., Osinski, Gordon R., Tornabene, Livio L., Pontefract, Alexandra J., Marion, Cassandra L., Flemming, Roberta L., Wilson, Janette H., Cloutis, Edward A. (2016) Hyperspectral mapping of alteration assemblages within a hydrothermal vug at the Haughton impact structure, Canada. Meteoritics & Planetary Science, 51 (12) 2274-2292 doi:10.1111/maps.12716 | Journal (article/letter/editorial) | | July 2016) AbstractâMeteorite impacts on Earth and Mars can generate hydrothermal systems that alter the...interactions and habitabilities at this site and on Mars. is seen at most complex craters on Earth that...melt-bearing units, the central uplift, ejecta, the crater rim, and sediments from lakes filling the craters... 2 R. N. Greenberger et al. small as Lonar crater (1.8 km diameter; Hagerty and Newsom 2003). A range...assemblages expected through similar processes on Mars (Schwenzer and Kring 2009, 2013; Schwenzer et al |  | Li, Shuai, Lucey, Paul G., Fraeman, Abigail A., Poppe, Andrew R., Sun, Vivian Z., Hurley, Dana M., Schultz, Peter H. (2020) Widespread hematite at high latitudes of the Moon. Science Advances, 6 (36) doi:10.1126/sciadv.aba1940 | Journal (article/letter/editorial) | | (Fe2O3) is a common oxidization product on Earth, Mars, and some asteroids. Although oxidizing processes...contrast, the three forms of FeOOH (goethite, akaganeite, and lepidocrocite) and maghemite (ï§-Fe2O3) all...minerals FeOOH (goethite, lepidocrocite, and akaganeite), Fe2O3 (hematite and maghemite), and Fe3O4 (magnetite)...(Fig. 3), and occurrences on flat surfaces such as crater floors are rare (Fig. 2). The east-west asymmetry...of the same location (e.g., the Rozhdestvenskiy crater) acquired at different optical periods (OPs) and |  | Sheppard, Rachel Y., Milliken, Ralph E., Russell, James M., Dyar, M. Darby, Sklute, Elizabeth C., Vogel, Hendrik, Melles, Martin, Bijaksana, Satria, Morlock, Marina A., Hasberg, Ascelina K.M. (2019) Characterization of Iron in Lake Towuti sediment. Chemical Geology, 512. 11-30 doi:10.1016/j.chemgeo.2019.02.029 | Journal (article/letter/editorial) | | record of AC C Mars. Keywords: Fe oxides; sedimentation; redox-stratified lake; Mars analogue 1 Introduction...is ubiquitous in mafic systems found on Earth and Mars. Here we examine a suite of samples from Lake Towuti...ancient redox-stratified lake purported to exist on Mars (Hurowitz et al. 2017). Assessing relationships...with nanophase hematite, goethite, or possibly akaganeite. At 4 K, these sextets are even more prominent...Mg/Fe-rich sediment in the Lake CR mudstones on Mars (Weber et al. 2015; Goudge et al. 2017). IP Towuti |  | Lorand, Jean-Pierre, Hewins, Roger H., Remusat, Laurent, Zanda, Brigitte, Pont, Sylvain, Leroux, Hugues, Marinova, Maya, Jacob, Damien, Humayun, Munir, Nemchin, Alexander, Grange, Marion, Kennedy, Allen, Göpel, Christa (2015) Nickeliferous pyrite tracks pervasive hydrothermal alteration in Martian regolith breccia: A study in NWA 7533. Meteoritics & Planetary Science, 50 (12) 2099-2120 doi:10.1111/maps.12565 | Journal (article/letter/editorial) | | one of the most important geochemical cycles on Mars (King and McLennan 2010; Franz et al. 2014). Oxidized...spectrometer (GRS) integrated observations suggest a Mars global average surface sulfur abundance of 4.40...Society, 2015. 2100 J.-P. Lorand et al. sulfur in Mars modern soils is combined with metallic cations (namely...to account for the global amount of sulfates on Mars (e.g., Burns and Fisher 1990; Dehouck et al. 2012)...magmatic sulfide ore bodies has been reported on Mars, neither by remote sensing orbiter data nor by rovers |  | Tu, V. M., Hausrath, E. M., Tschauner, O., Iota, V., Egeland, G. W. (2014) Dissolution rates of amorphous Al- and Fe-phosphates and their relevance to phosphate mobility on Mars. American Mineralogist, 99 (7) 1206-1215 doi:10.2138/am.2014.4613 | Journal (article/letter/editorial) | | Fe-phosphates and their relevance to phosphate mobility on Marsâ Valerie M. Tu1, Elisabeth M. Hausrath1,*, Oliver...and therefore if life exists or ever existed on Mars it may have required phosphate. Amorphous Al- and...also likely important in the phosphate cycle on Mars. Despite this importance, however, few dissolution...on Mars, phosphate would be rapidly released into acidic environments. Keywords: Phosphate, Mars, mineral...important to assessing potential habitability on Mars. The primary phosphate minerals present in martian |  | Beaty, D. W., Grady, M. M., McSween, H. Y., Sefton-Nash, E., Carrier, B. L., Altieri, F., Amelin, Y., Ammannito, E., Anand, M., Benning, L. G., Bishop, J. L., Borg, L. E., Boucher, D., Brucato, J. R., Busemann, H., Campbell, K. A., Czaja, A. D., Debaille, V., Des Marais, D. J., Dixon, M., Ehlmann, B. L., Farmer, J. D., Fernandez-Remolar, D. C., Filiberto, J., Fogarty, J., Glavin, D. P., Goreva, Y. S., Hallis, L. J., Harrington, A. D., Hausrath, E. M., Herd, C. D. K., Horgan, B., Humayun, M., Kleine, T., Kleinhenz, J., Mackelprang, R., Mangold, N., Mayhew, L. E., McCoy, J. T., McCubbin, F. M., McLennan, S. M., Moser, D. E., Moynier, F., Mustard, J. F., Niles, P. B., Ori, G. G., Raulin, F., Rettberg, P., Rucker, M. A., Schmitz, N., Schwenzer, S. P., Sephton, M. A., Shaheen, R., Sharp, Z. D., Shuster, D. L., Siljeström, S., Smith, C. L., Spry, J. A., Steele, A., Swindle, T. D., ten Kate, I. L., Tosca, N. J., Usui, T., Van Kranendonk, M. J., Wadhwa, M., Weiss, B. P., Werner, S. C., Westall, F., Wheeler, R. M., Zipfel, J., Zorzano, M. P. (2019) The potential science and engineering value of samples delivered to Earth by Mars sample return. Meteoritics & Planetary Science, 54. doi:10.1111/maps.13242 | Journal (article/letter/editorial) | | engineering value of samples delivered to Earth by Mars sample return International MSR Objectives and Samples...2018 This report requested by the International Mars Exploration Working Group (IMEWG). Questions or............................................. i.3. Mars Sample Return: History and Current Context............................................. i.3.2 The Mars Sample Return Campaign: Current Concept...........i.6. The Proposed Sample-Related Objectives for Mars Sample Return.................................. |  | Yao, Xizhi, Xia, Fang, Brugger, JoĂ«l, Kartal, Muhammet, Adegoke, Idowu A. (2021) Rapid Marcasite to Pyrite Transformation in Acidic Low-Temperature Hydrothermal Fluids and Saturation Index Control on FeS2 Precipitation Dynamics and Phase Selection. ACS Earth and Space Chemistry, 5 (9) 2453-2465 doi:10.1021/acsearthspacechem.1c00137 | Journal (article/letter/editorial) | | sulïŹde in the Earthâs crust and is also found on Mars. It can form by direct hydrothermal precipitation...understanding of the evolution of early life on Earth and Mars. Pyrite often forms intergrowth with its polymorph...Spanovich, N. Mineralogy of a Mudstone at Yellowknife Bay, Gale Crater, Mars. Science 2014, 343, 1243480. (21)...A Kinetic Analysis of the Transformation from Akaganeite to Hematite: An In Situ TimeResolved X-ray Diffraction |
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