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The petrography and chemical composition of the Bruderheim meteorite

Duke, Michael and Maynes, Donald and Brown, Harrison (1961) The petrography and chemical composition of the Bruderheim meteorite. Journal of Geophysical Research, 66 (10). pp. 3557-3563. ISSN 0148-0227. doi:10.1029/JZ066i010p03557.

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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.

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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.
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NASANsG 56-60
Atomic Energy CommissionAT (11-1)-208
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Caltech Division of Geological Sciences1053
Issue or Number:10
Record Number:CaltechAUTHORS:20141110-122354646
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Official Citation:Duke, M., D. Maynes, and H. Brown (1961), The petrography and chemical composition of the Bruderheim meteorite, J. Geophys. Res., 66(10), 3557–3563, doi:10.1029/JZ066i010p03557.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51514
Deposited By: George Porter
Deposited On:10 Nov 2014 21:19
Last Modified:10 Nov 2021 19:12

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