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Atomic force microscopy imaging of fragments from the Martian meteorite ALH84001A combination of scanning electron microscopy (SEM) and environmental scanning electron microscopy (ESEM) techniques, as well as atomic force microscopy (AFM) methods has been used to study fragments of the Martian meteorite ALH84001. Images of the same areas on the meteorite were obtained prior to and following gold/palladium coating by mapping the surface of the fragment using ESEM coupled with energy-dispersive X-ray analysis. Viewing of the fragments demonstrated the presence of structures, previously described as nanofossils by McKay et al. (Search for past life on Mars--possible relic biogenic activity in martian meteorite ALH84001. Science, 1996, pp. 924-930) of NASA who used SEM imaging of gold-coated meteorite samples. Careful imaging of the fragments revealed that the observed structures were not an artefact introduced by the coating procedure.
Document ID
20040089256
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Steele, A.
(School of Pharmacy and Biomedical Sciences, University of Portsmouth United Kingdom)
Goddard, D.
Beech, I. B.
Tapper, R. C.
Stapleton, D.
Smith, J. R.
Date Acquired
August 21, 2013
Publication Date
January 1, 1998
Publication Information
Publication: Journal of microscopy
Volume: 189 Pt 1
ISSN: 0022-2720
Subject Category
Lunar And Planetary Science And Exploration
Distribution Limits
Public
Copyright
Other

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