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Basaltic Soil of Gale Crater: Crystalline Component Compared to Martian Basalts and Meteorites
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Author and Affiliation:
Treiman, A. H.(Lunar and Planetary Inst., Houston, TX, United States);
Bish, D. L.(Indiana Univ., Bloomington, IN, United States);
Ming, D. W.(NASA Johnson Space Center, Houston, TX, United States);
Morris, R. V.(NASA Johnson Space Center, Houston, TX, United States);
Schmidt, M.(Brock Univ., Saint Catherines, Ontario, Canada);
Downs, R. T.(Arizona Univ., Tucson, AZ, United States);
Stolper, E. M.(California Inst. of Tech., Pasadena, CA, United States);
Blake, D. F.(NASA Ames Research Center, Moffett Field, CA, United States);
Vaniman, D. T.(Planetary Science Inst., Tucson, AZ, United States);
Achilles, C. N.(NASA Johnson Space Center, Houston, TX, United States);
Chipera, S. J.(Chesapeake Energy Corp., Oklahoma City, OK, United States);
Bristow, T. F.(NASA Ames Research Center, Moffett Field, CA, United States);
Crisp, J. A.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States);
Farmer, J. A.(Arizona State Univ., Tempe, AZ, United States);
Morookian, J. M.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States);
Morrison, S. M.(Arizona Univ., Tucson, AZ, United States);
Rampe, E. B.(NASA Johnson Space Center, Houston, TX, United States);
Sarrazin, P.(inXitu, Mountain View, CA, United States);
Yen, A. S.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States);
Anderosn, R. C.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States);
DesMarais, D. J.(NASA Ames Research Center, Moffett Field, CA, United States);
Spanovich, N.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Abstract: A significant portion of the soil of the Rocknest dune is crystalline and is consistent with derivation from unweathered basalt. Minerals and their compositions are identified by X-ray diffraction (XRD) data from the CheMin instrument on MSL Curiosity. Basalt minerals in the soil include plagioclase, olivine, low- and high-calcium pyroxenes, magnetite, ilmenite, and quartz. The only minerals unlikely to have formed in an unaltered basalt are hematite and anhydrite. The mineral proportions and compositions of the Rocknest soil are nearly identical to those of the Adirondack-class basalts of Gusev Crater, Mars, inferred from their bulk composition as analyzed by the MER Spirit rover.
Publication Date: Mar 18, 2013
Document ID:
20130009989
(Acquired Feb 25, 2013)
Subject Category: GEOPHYSICS
Report/Patent Number: JSC-CN-27905
Document Type: Conference Paper
Meeting Information: 44th Lunar and Planetary Science Conference; 18 - 22 Mar. 2013; The Woodlands, TX; United States
Meeting Sponsor: Lunar and Planetary Inst.; Houston, TX, United States
Universities Space Research Association; Houston, TX, United States
Financial Sponsor: NASA Johnson Space Center; Houston, TX, United States
Organization Source: NASA Johnson Space Center; Houston, TX, United States
Description: 2p; In English; Original contains color illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution as joint owner in the copyright
NASA Terms: BASALT; CRYSTALLINITY; HEMATITE; MAGNETITE; MARS CRATERS; MARS LANDING SITES; SNC METEORITES; SOILS; X RAY DIFFRACTION; PLAGIOCLASE; OLIVINE; DUNES; CALCIUM
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