The petrography and chemical composition of the Bruderheim meteorite
- Creators
- Duke, Michael
- Maynes, Donald
- Brown, Harrison
Abstract
The Bruderheim meteorite, a hypersthene chondrite, has been examined both petrographically and chemically. The minerals of the meteorite are olivine (Fo_(78)), hypersthene (En_(78)), plagioclase (Ab_(95)), apatite, merrillite, chromite, troilite, and metallic iron-nickel. Comparison of petrographic and chemical analyses shows that (1) pyroxene, troilite, and metallic iron-nickel are texturally related; (2) there is substantial CaO contained in the hypersthene; (3) there are important variations in samples the size of a thin section, and it is likely that there are also sampling errors on quantities of the size used for chemical analysis. The texture of the meteorite, including the principal chondrule types, is described.
Additional Information
Copyright 1961 by the American Geophysical Union. (Manuscript received August 4, 1961.) We are indebted to Professor R. E. Follinsbee for making a specimen of the Bruderheim meteorite available to us. We appreciate the critical advice and help given by Professor Leon T. Silver. Mr. R. yon Huene prepared the polished section and the polished thin section. The help of Mr. Lee C. Peck and Mr. J. J. Fahey of the U.S. Geological Survey in establishing some of the analytical procedures used in this work is gratefully acknowledged. This work was undertaken with the help of grant no. NsG 56-60 given by the National Aeronautics and Space Administration and Atomic Energy Commission contract AT (11-1)-208. Contribution No. 1053.Attached Files
Published - jgr1866.pdf
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Additional details
- Eprint ID
- 51514
- Resolver ID
- CaltechAUTHORS:20141110-122354646
- NASA
- NsG 56-60
- Atomic Energy Commission
- AT (11-1)-208
- Created
-
2014-11-10Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Other Numbering System Name
- Caltech Division of Geological Sciences
- Other Numbering System Identifier
- 1053