title: Magnetite in CI Carbonaceous Meteorites: Origin by Aqueous Activity on a Planetesimal Surface.
abstract: 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.
authors.forename: J F
authors.initials: JF
authors.lastname: Kerridge
authors.forename: A L
authors.initials: AL
authors.lastname: Mackay
authors.forename: W V
authors.initials: WV
authors.lastname: Boynton