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Gossans on MarsThe appearance of rusty iron-rich oxidized cappings over sulfide-bearing rocks on earth indicates that similar gossans may have formed on the surface of Mars. Electrochemical processes and thermodynamic relationships linking acidity to oxidation-reduction reactions between primary sulfide minerals and their oxidative weathering products present in the regolith of Mars are discussed. Remote-sensed visible spectra of the Martian surface are in keeping with the presence of poorly-crystalline FeOOH, jarosite, silica, and clay silicates found in gossans, while incompletely weathered pyrrhotite may represent the magnetic material observed in Martian regolith.
Document ID
19890023539
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Burns, Roger G.
(MIT Cambridge, MA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
Lunar And Planetary Exploration
Meeting Information
Meeting: Lunar and Planetary Science Conference
Location: Houston, TX
Country: United States
Start Date: March 16, 1987
End Date: March 20, 1987
Accession Number
89A10910
Funding Number(s)
CONTRACT_GRANT: NAGW-1078
CONTRACT_GRANT: NSG-7604
Distribution Limits
Public
Copyright
Other

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