Accession Number:

AD0649181

Title:

SIGNIFICANCE OF IRON-RICH SILICATES IN THE MEZO-MADARAS CHONDRITE.

Descriptive Note:

Environmental research papers,

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Report Date:

1965-12-05

Pagination or Media Count:

18.0

Abstract:

Several chondrules in the Mezo-Madaras chondrite contain the disequilibrium mineral assemblage ferrous olivine--magnesian pyroxene--merrihueite approximately K or Na2 Fe or Mg5 Si12O30 plus or minus metallic nickel-iron. The ferrous silicates in this assemblage were probably formed by introduction of FeO into an earlier igneous assemblage which consisted or enstatite or clinoenstatite, a magnesian analogue of merrihueite, and silica. Textural and chemical evidence indicate that this alteration of the chondrules took place before they were incorporated in the chondrite. Author

Subject Categories:

  • Astrophysics
  • Geology, Geochemistry and Mineralogy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE