Significance of iron-rich silicates in the Mezö-Madaras chondrite
By: Robert T. Dodd, W. Randall Van Schmus, Ursula B. Marvin
Contributors: Van Schmus, W. R.; Marvin, Ursula B.
Series: AFCRL -- 67-0012; Environmental Research Papers -- no. 254; Environmental research papers (Hanscom AFB, Mass.) -- no. 254
Publisher: United States Air Force, Office of Aerospace Research, Air Force Cambridge Research Laboratories, Space Physics Laboratory
Published: 1967
Place of publication: Bedford, Mass
Language: eng
Number of pages: 1191
Subjects: Chondrites (Meteorites)
Description: Several chondrules in the Mezo-Madaras chondrite contain the disequilibrium mineral assemblage: ferrous olivine--magnesian pyroxene--merrihueite (approximately (K> or = Na)2 (Fe> or = Mg)5 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).
Notes: "Space Physics Laboratory Project 7698."

"Reprinted from The American Mineralogist, Vol. 51, pp. 1177-1191, July 1966."

"January 1967."

Includes bibliographical references (p. 1190-1191).