NANOMETER-SCALE MEASUREMENTS OF IRON OXIDATION STATES OF CRONSTEDTITE FROM PRIMITIVE METEORITES
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dc.contributor.author | Zega T.J. | |
dc.contributor.author | Garvie L.A.J. | |
dc.contributor.author | Buseck P.R. | |
dc.date.accessioned | 2022-01-02T07:44:04Z | |
dc.date.available | 2022-01-02T07:44:04Z | |
dc.date.issued | 2003 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=7593672 | |
dc.identifier.citation | American Mineralogist, 2003, 88, 7, 1169 | |
dc.identifier.issn | 0003-004X | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/34081 | |
dc.description.abstract | We report the first nanometer-scale measurements of the iron (III) to total iron (Fe3+/ΣFe) ratios from primitive meteorites. These ratios from the matrices and fine-grained rims (FGRs) of the Murchison, Murray, and Cold Bokkeveld CM chondrites fall within a tight range, from 0.45 to 0.54 (±0.02). The measurements were made using electron energy-loss spectroscopy (EELS) on cronstedtite, which is a product of aqueous alteration early in the history of the solar system. The results indicate that the alteration of these meteorites, which display a broad range of alteration intensity, occurred under similar redox conditions and, further, that alteration likely occurred in situ on asteroidal bodies rather than in the solar nebula. | |
dc.subject | IRON | |
dc.subject | OXIDATION | |
dc.subject | MINERALOGY | |
dc.subject | METEORS & METEORITES | |
dc.title | NANOMETER-SCALE MEASUREMENTS OF IRON OXIDATION STATES OF CRONSTEDTITE FROM PRIMITIVE METEORITES | |
dc.type | Статья |
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