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Mars Global Surveyor Thermal Emission Spectrometer experiment: Investigation description and surface science results
The Thermal Emission Spectrometer (TES) investigation on Mars Global Surveyor (MGS) is aimed at determining (1) the composition of surface minerals, rocks, and ices; (2) the temperature and dynamics…
In Situ Evidence for an Ancient Aqueous Environment at Meridiani Planum, Mars
The geologic record at Meridiani Planum suggests that conditions were suitable for biological activity for a period of time in martian history.
Jarosite and Hematite at Meridiani Planum from Opportunity's Mössbauer Spectrometer
Mössbauer spectra measured by the Opportunity rover revealed four mineralogical components in Meridiani Planum at Eagle crater: jarosite- and hematite-rich outcrop, hematite-rich soil,…
Spectral and other physicochemical properties of submicron powders of hematite (alpha-Fe2O3), maghemite (gamma-Fe2O3), magnetite (Fe3O4), goethite (alpha-FeOOH), and lepidocrocite (gamma-FeOOH).
- R. Morris, H. Lauer, C. A. Lawson, E. Gibson, G. Nace, C. Stewart
- PhysicsJournal of geophysical research
- 10 March 1985
Variations in the magnitude of the reflectivity of the hematite powders as a function of mean particle diameter are consistent with scattering theory, and comparison with Mossbauer data suggests covalent character increases sequentially through the aforementioned series.
Global mapping of Martian hematite mineral deposits: Remnants of water‐driven processes on early Mars
Near-global (60°S to 60°N) thermal infrared mapping by the Thermal Emission Spectrometer (TES) on Mars Global Surveyor has revealed unique deposits of crystalline gray hematite (α-Fe2O3) exposed at…
Chemistry and mineralogy of outcrops at Meridiani Planum
Space weathering on airless bodies: Resolving a mystery with lunar samples
Abstract— Using new techniques to examine the products of space weathering of lunar soils, we demonstrate that nanophase reduced iron (npFe0) is produced on the surface of grains by a combination of…
Detection of Silica-Rich Deposits on Mars
Opaline silica deposits found on Mars are interpreted to have formed under hydrothermal conditions and therefore to be strong indicators of a former aqueous environment, important for understanding the past habitability of Mars.
Mineralogy of a Mudstone at Yellowknife Bay, Gale Crater, Mars
Sedimentary rocks at Yellowknife Bay (Gale crater) on Mars include mudstone sampled by the Curiosity rover, indicating that clay mineral formation on Mars extended beyond Noachian time.
Alkaline volcanic rocks from the Columbia Hills, Gusev crater, Mars
 Irvine, Backstay, and Wishstone are the type specimens for three classes of fine-grained or fragmental, relatively unaltered rocks with distinctive thermal emission spectra, found as float on the…