Magnetic tests for magnetosome chains in Martian meteorite ALH84001

Details Magnetic tests for magnetosome chains in Martian meteorite ALH84001 Magnetic tests for magnetosome chains in Martian meteorite ALH84001

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004pnas..101.8281w&link_type=abstract

Proceedings of the National Academy of Science, vol. 101, Issue 22, p.8281-8284

Computer Science

8

Scientific paper

Transmission electron microscopy studies have been used to argue that magnetite crystals in carbonate from Martian meteorite ALH84001have a composition and morphology indistinguishable from that of magnetotactic bacteria. It has even been claimed from scanning electron microscopy imaging that some ALH84001magnetite crystals are aligned in chains. Alignment of magnetosomes in chains is perhaps the most distinctive of the six crystallographic properties thought to be collectively unique to magnetofossils. Here we use three rock magnetic techniques, low-temperature cycling, the Moskowitz test, and ferromagnetic resonance, to sense the bulk composition and crystallography of millions of ALH84001magnetite crystals. The magnetic data demonstrate that although the magnetite is unusually pure and fine-grained in a manner similar to terrestrial magnetofossils, most or all of the crystals are not arranged in chains.

Affiliated with

Also associated with

No associations

Rating

Magnetic tests for magnetosome chains in Martian meteorite ALH84001 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Magnetic tests for magnetosome chains in Martian meteorite ALH84001, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic tests for magnetosome chains in Martian meteorite ALH84001 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1394876