Abstract
BERWERTH1 reported monoclinic pyroxene (diopside), orthopyroxene, glass, and a sodium–iron–aluminium silicate, weinbergerite, in the octahedrite iron, Kodaikanal. So far, however, all his observations have not been verified. In fact, diopside (or pigeonite) is considered to occur only in some achondrites, chondrites, and mesosiderites2. Glass of intermediate plagioclase composition (maskelynite) is found in several chondrites2; however, Marvin3 reported a relatively high-index glass (n= 1.60) in the iron, Carbo.
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References
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Work carried out by P. Moore, Department of Geophysical Sciences, University of Chicago.
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OLSEN, E., MUELLER, R. Silicates in some Iron Meteorites. Nature 201, 596–597 (1964). https://doi.org/10.1038/201596a0
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DOI: https://doi.org/10.1038/201596a0
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