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Viking magnetic properties experiment - Extended mission resultsThe backhoe magnets on Viking Lander (VL) 2 were successfully cleaned, followed by a test involving successive insertions of the cleaned backhoe into the surface. Rapid saturation of the magnets confirmed evidence from primary mission results that the magnetic mineral in the Martian surface is widely distributed, most probably in the form of composite particles of magnetic and nonmagnetic minerals. An image of the VL 2 backhoe taken via the X4 magnifying mirror demonstrates the fine-grained nature of the attracted magnetic material. The presence of maghemite and its occurrence as a pigment in, or a thin coating on, all mineral particles or as discrete, finely divided and widely distributed crystallites, are consistent with data from the inorganic analysis experiments and with laboratory simulations of results of the biology experiments on Mars.
Document ID
19800042219
Document Type
Reprint (Version printed in journal)
Authors
Hargraves, R. B. (Princeton University Princeton, N.J., United States)
Collinson, D. W. (Newcastle-upon-Tyne, University Newcastle-upon-Tyne, United Kingdom)
Arvidson, R. E. (Washington, University St. Louis, Mo., United States)
Cates, P. M. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)
Date Acquired
August 10, 2013
Publication Date
December 30, 1979
Publication Information
Publication: Journal of Geophysical Research
Volume: 84
Subject Category
LUNAR AND PLANETARY EXPLORATION
Distribution Limits
Public
Copyright
Other