Physics
Scientific paper
Mar 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..mar.k3867h&link_type=abstract
American Physical Society, Annual March Meeting, March 16-20, 1998 Los Angeles, CA, abstract #K38.67
Physics
Scientific paper
Fe-containing phases were investigated by Mössbauer spectroscopy in these two members of the meteorite group CV3 carbonaceous chondrites. Axtell recently became available to researchers, and although at first suspected of being a piece of the well-studied Allende^1, it does differ in some radiochemical details^2. The Mössbauer spectra of the two meteorites are also strikingly similar, showing barely a trace of ferromagnetic phases and a predominant paramagnetic doublet characteristic of Fe^2+ ion in the silicate mineral olivine. Both meteorites in addition show doublets for lesser amounts of Fe^3+ phases, presumably olivine oxidation products, such as sheet silicates or Fe hydroxides. These Fe^3+ doublets differ considerably between the two meteorites, and so provide further evidence that Axtell is distinct from Allende. Although Fe^3+ content in meteorites is correlated with C-14 terrestrial age on a thousand- year time scale, Allende is known to have fallen in 1969, so its Fe^3+ content probably indicates preterrestrial weathering. Axtell's terrestrial age is uncertain, but probably around 100 years^2. Thus Axtell also likely experienced an oxidative environment during its pre-fall history, and the two meteorites probably come from similar parent bodies. ^1Oliver et al Meteoritics 19 (1984) 25. ^2Simon et al., ibid. 30 (1995) 42. abstract.
Hoffman Eugene
Oliver F. W.
Seifu D.
No associations
LandOfFree
Mössbauer spectroscopic analysis of two similar meteorites, Allende and Axtell. 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 Mössbauer spectroscopic analysis of two similar meteorites, Allende and Axtell., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mössbauer spectroscopic analysis of two similar meteorites, Allende and Axtell. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1657526