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The Major-Element Composition of Mercury’s Surface from MESSENGER X-ray Spectrometry
Geochemical data show that the major rock-forming components of Mercury are characterized by high sulfur content. X-ray fluorescence spectra obtained by the MESSENGER spacecraft orbiting MercuryExpand
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The redox state, FeO content, and origin of sulfur‐rich magmas on Mercury
[1] MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) orbital observations of Mercury have revealed elevated S abundances, Ca-S and Mg-S correlations, and a low upper limitExpand
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Major-Element Abundances on the Surface of Mercury: Results from the MESSENGER Gamma-Ray Spectrometer
[1] Orbital gamma-ray measurements obtained by the MESSENGER spacecraft have been analyzed to determine the abundances of the major elements Al, Ca, S, Fe, and Na on the surface of Mercury. The SiExpand
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Sulfur at Mercury, Elemental at the Poles and Sulfides in the Regolith
We propose that the bright radar spots seen at Mercury's north and south poles are a result of volume scattering from elemental sulfur. Further we suggest that the high average index of refractionExpand
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Processes that Promote and Deplete the Exosphere of Mercury
Abstract It has been speculated that the composition of the exosphere is related to the composition of Mercury’s crustal materials. If this relationship is true, then inferences regarding the bulkExpand
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Spectral emissivity measurements of Mercury's surface indicate Mg- and Ca-rich mineralogy, K-spar, Na-rich plagioclase, rutile, with possible perovskite, and garnet
Mid-infrared 2-D spectroscopic measurements from 8.0 to 12.7 gm of Mercury were taken using Boston University's Mid-Infrared Spectrometer and Imager (MIRSI) mounted on the NASA Infrared TelescopeExpand
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Distribution and Abundance of Sodium in Mercury's Atmosphere, 1985–1988
Abstract We report spectroscopic measurements of sodium in Mercury's atmosphere for the period July 1985–May 1988. Na abundance varies from 10 atoms cm −2 in equatorial regions in March 1987 to asExpand
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Origin and character of the lunar and mercurian atmospheres
Abstract This article presents a description of the lunar and mercurian atmospheres and the outstanding, unanswered questions. In that spirit we will not repeat the information found in the reviewsExpand
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Radioactive Elements on Mercury’s Surface from MESSENGER: Implications for the Planet’s Formation and Evolution
Gamma-ray emission from the surface of Mercury indicates that the planet accreted from relatively volatile-enriched material. The MESSENGER Gamma-Ray Spectrometer measured the average surfaceExpand
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