Isotopic anomalies of noble gases in meteorites and their origins. VI Presolar components in the Murchison C2 chondrite

Details Isotopic anomalies of noble gases in meteorites and their origins. VI Presolar components in the Murchison C2 chondrite Isotopic anomalies of noble gases in meteorites and their origins. VI Presolar components in the Murchison C2 chondrite

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980gecoa..44..189a&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 44, Feb. 1980, p. 189-209.

Computer Science

26

Chondrites, Isotopes, Meteoritic Composition, Rare Gases, Solar System, Argon, Carbonaceous Meteorites, Gas Composition, Half Life, Helium, Krypton, Neon, Perchloric Acid, Stellar Evolution, Xenon, Meteorites, C2 Chondrites, Murchison Meteorite, Origins, Rare Gases, Isotopes, Anomalies, Procedure, Neon, Argon, Sodium, Krypton, Xenon, Helium, Isotopic Ratios, Samples, Meteorite, Enrichment, Solar System, Temperatures, Mineralogy, Spallogenic Gases, Comparisons, Data, Analysis, Mass Spectrometery, Composition

Scientific paper

Rare gases were analyzed by stepped heating in five fractions of a chemically resistant residue from Murchison that had been separated according to grain size and resistance to HClO4. Nine gas components were recognized, of which three appear to be presolar: (1) Ne-E(H) released at 1000-1600 C and located in spinel; (2) Ne-E(L) released at less than 800 C and apparently located in a carbonaceous phase of grain size up to 10 microns; and (3) s-process Xe and Kr released at 1200-1600 C and located in a poorly characterized, possibly carbonaceous phase, distinct from the host phase of Ne-E(L).

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