Magnetite in CI Carbonaceous Meteorites: Origin by Aqueous Activity on a Planetesimal Surface

Magnetite in CI Carbonaceous Meteorites: Origin by Aqueous Activity on a Planetesimal Surface

The composition and morphology of magnetite in CI carbonaceous meteorites appear incompatible with a nebular origin. Mineralization on the meteorite parent body is a more plausible mode of formation. The iodine-xenon age of this material therefore dates an episode of secondary mineralization on a pl...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 1979-07, Vol.205 (4404), p.395-397
Hauptverfasser: Kerridge, John F., Mackay, Alan L., Boynton, William V.
Format: Artikel
Sprache:eng
Schlagworte:
Carbonaceous meteorites
Carbonates
Condensation
Crystal morphology
Magnetite
Meteorites
Platelets
Pyrites
Rock textures
Surface texture
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Zusammenfassung:The composition and morphology of magnetite in CI carbonaceous meteorites appear incompatible with a nebular origin. Mineralization on the meteorite parent body is a more plausible mode of formation. The iodine-xenon age of this material therefore dates an episode of secondary mineralization on a planetesimal rather than the epoch of condensation in the primitive solar nebula.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.205.4404.395