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Biogenic Magnetite in Martian Meteorite ALH84001Fine-grained magnetite (Fe3O4) in martian meteorite ALH84001, generally less than 200 microns in size, is located primarily in the rims that surround the carbonate globules. There are two populations of ALH84001 magnets, which are likely formed at low temperature by inorganic and biogenic processes. Nearly 27/o of ALH84001 magnetite particles. also called elongated prisms, have characteristics which make them uniquely identifiable as biological precipitates.
Document ID
20000094535
Acquisition Source
Johnson Space Center
Document Type
Preprint (Draft being sent to journal)
Authors
Thomas-Keprta, Kathie L.
(Lockheed Martin Corp. Houston, TX United States)
Bazylinski, Dennis
(Iowa State Univ. of Science and Technology Ames, IA United States)
Wentworth, Susan J.
(Lockheed Martin Corp. Houston, TX United States)
McKay, David S.
(NASA Johnson Space Center Houston, TX United States)
Kirschvink, Joseph L.
(California Inst. of Tech. Pasadena, CA United States)
Clemett, Simon J.
(MVA, Inc. Norcross, GA United States)
Bell, Mary Sue
(Lockheed Martin Corp. Houston, TX United States)
Golden, D. C.
(Dual, Inc. Houston, TX United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1999
Subject Category
Astrophysics
Meeting Information
Meeting: Mars
Location: Pasadene, CA
Country: United States
Start Date: July 18, 1999
End Date: July 23, 1999
Sponsors: California Inst. of Tech.
Funding Number(s)
PROJECT: RTOP 344-38-11-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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