NDLI: Chemical diversity along the traverse of the rover spirit at gusev crater

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Chemical diversity along the traverse of the rover spirit at gusev crater

Content Provider	NASA Technical Reports Server (NTRS)
Author	Gellert, R. Rieder, R. Wanke, H. Economou, T. Yen, A. Morris, R. V. Zipfel, J. Dreibus, G. Ming, D. W. Brueckner, J. Klingelhoefer, G. Clark, B. C. d'Uston, C. Lugmair, G. Squyres, S. W.
Copyright Year	2006
Description	The Alpha-Particle-X-ray Spectrometer (APXS) is part of the in situ payload of the Mars Exploration Rovers. It has determined the chemical composition of soils and rocks along the nearly 6 km long traverse of the rover Spirit. The measuring method a combination of PIXE and XRF using Cm244 sources - allowed the unambiguous identification of elemental compositions with high precision. Besides sample triage and quantification of saltforming elements as indicators for aqueous alteration, the APXS also delivered important constraints to mineralogy intruments (i.e., Mossbauer (MB), MiniTES, Pancam) on minerals and rock types. The mineralogy instruments on the other hand provided constraints on minerals used for APXS normative calculations and, e.g. allowed the attribution of S to sulfate, instead of sulfide or elemental sulfur. This abstract gives an updated overview of the data obtained up to our current rover position on sol 720 at the eastern base of the Columbia Hills. We will emphasize elemental correlations that imply the presence of certain minerals that can not be identified by the MER mineralogy instruments.
File Size	63020
Page Count	2
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20080026213
Archival Resource Key	ark:/13960/t1ng9mk27
Language	English
Publisher Date	2006-03-13
Access Restriction	Open
Subject Keyword	Lunar And Planetary Science And Exploration Alpha Particles Data Processing Sulfates Magnets Mars Exploration Soils Sulfides Dust Magnetite Sedimentary Rocks Planetary Geology Mars Craters Basalt Chemical Composition Sulfur X Ray Spectrometers Mars Roving Vehicles Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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