Accretionary dust mantles in CM chondrites - Evidence for solar nebula processes

Details Accretionary dust mantles in CM chondrites - Evidence for solar nebula processes Accretionary dust mantles in CM chondrites - Evidence for solar nebula processes

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gecoa..56.2873m&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 56, no. 7, July 1992, p. 2873-2897. Research supported by DFG.

Mathematics

Logic

116

Carbonaceous Chondrites, Cosmic Dust, Meteoritic Composition, Solar Corona, Minerals, Solar System Evolution, Solar Wind

Scientific paper

The origin of the various components of 14 carbonaceous chondrites of the CM group, and the evolution of their parent body (or bodies) were examined by studying the texture and the model composition of these chondrites. Evidence is presented for the existence of preaccretionary aqueous alteration of anhydrous primary products in the solar nebula. Based on the results of textural, chemical, and mineralogical analyses, it is concluded that a major portion of the water-bearing phases in CM chondrites were produced by the hydration of refractory phases prior to the formation of dust mantles and prior to the formation of the recent CM parent body.

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