Accession Number : AD0647126

Title :   RESEARCH DIRECTED TOWARD THE ELECTRON MICROANALYSIS OF MINERAL PHASES IN CHONDRITE METEORITES.

Descriptive Note : Final rept., Sep 64-Sep 66,

Corporate Author : ADVANCED METALS RESEARCH CORP BURLINGTON MASS

Personal Author(s) : Koffman,Donald M. ; Ogilvie,R. E.

Report Date : 30 SEP 1966

Pagination or Media Count : 54

Abstract : Chemically analyzed standards of olivine, orthopyroxene and clinopyroxene were examined in the AN electron beam microanalyzer to obtain calibration information for the conversion of x-ray intensity to composition. This calibration information was employed to determine the olivine and orthopyroxene (low calcium) compositions of thirty one unequilibrated ordinary chondrites. The chemistry of the olivine, orthopyroxene and clinopyroxene minerals in fourteen equilibrated chondrites of the H, L, and LL groups were determined, and the variation of chemistry within each group was found to be quite small. (Author)

Descriptors :   (*MINERALS, METEORITES), (*METEORITES, MICROANALYSIS), ELECTRON BEAMS, X RAY SPECTRA, FLUORESCENCE, INTENSITY, STANDARDS, CALIBRATION, PHASE STUDIES, CHEMICAL BONDS, SILICATES

Subject Categories : Geology, Geochemistry and Mineralogy

Distribution Statement : APPROVED FOR PUBLIC RELEASE