Computer Science
Scientific paper
Apr 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012m%26ps..tmp..153e&link_type=abstract
Meteoritics & Planetary Science, Online Early
Computer Science
Scientific paper
Low-iron, manganese-enriched (LIME) olivine grains are found in cometary samples returned by the Stardust mission from comet 81P/Wild 2. Similar grains are found in primitive meteoritic clasts and unequilibrated meteorite matrix. LIME olivine is thermodynamically stable in a vapor of solar composition at high temperature at total pressures of a millibar to a microbar, but enrichment of solar composition vapor in a dust of chondritic composition causes the FeO/MnO ratio of olivine to increase. The compositions of LIME olivines in primitive materials indicate oxygen fugacities close to those of a very reducing vapor of solar composition. The compositional zoning of LIME olivines in amoeboid olivine aggregates is consistent with equilibration with nebular vapor in the stability field of olivine, without re-equilibration at lower temperatures. A similar history is likely for LIME olivines found in comet samples and in interplanetary dust particles. LIME olivine is not likely to persist in nebular conditions in which silicate liquids are stable.
Beckett John R.
Ebel Denton S.
Weisberg Michael K.
No associations
LandOfFree
Thermochemical stability of low-iron, manganese-enriched olivine in astrophysical environments 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 Thermochemical stability of low-iron, manganese-enriched olivine in astrophysical environments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermochemical stability of low-iron, manganese-enriched olivine in astrophysical environments will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1118931