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Biogenic Magnetite in Martian Meteorite ALH84001Fine-grained magnetite (Fe3O4) in martian meteorite ALH84001, generally less than 200 nm in size, is located primarily in the rims that surround the carbonate globules. There are two populations of ALH84001 magnetites, which are likely formed at low temperature by inorganic and biogenic processes. Nearly 27% of ALH84001 magnetite particles, also called elongated prisms, have characteristics which make them uniquely identifiable as biological precipitates. Additional information is contained in the original extended abstract.
Document ID
20000110471
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Thomas-Keprta, K. 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)
Gibson, Everett K., Jr.
(NASA Johnson Space Center Houston, TX United States)
Date Acquired
August 19, 2013
Publication Date
July 1, 1999
Publication Information
Publication: The Fifth International Conference on Mars
Subject Category
Astrophysics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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