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Potassium-Feldspar Phenocrysts in the Surface of Colomera, and Iron Meteorite

Wasserburg, G. J. and Sanz, H. G. and Bence, A. E. (1968) Potassium-Feldspar Phenocrysts in the Surface of Colomera, and Iron Meteorite. Science, 161 (3842). pp. 684-687. ISSN 0036-8075. http://resolver.caltech.edu/CaltechAUTHORS:20131121-075702149

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Abstract

Silicate aggregates, including large single crystals of potassium feldspar as long as 11 centimeters and sodium feldspar, are embeded in the surface of the medium octahedrite Colomera. Silicate nodules in the interior appear to be much smaller (about 0.3 centimeter). Glass nodules are abundant both on the external surface and in the interior. These observations are evidence that some iron meteorites formed as segregations within a silicate matrix and did not originate in a metallic planetary core.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://www.jstor.org/stable/info/1725836PublisherArticle
http://dx.doi.org/10.1126/science.161.3842.684 DOIArticle
Additional Information:© 1968 American Association for the Advancement of Science. 20 May 1968. Supported by grants from NSF (GP 3570 and 7976) and NASA (NGR-05-002-044). Philip Carpenter and James Stevens (Jet Propulsion Laboratory) generously aided us in cleaning and weighing the meteorite. Valuable discussions with D. S. Burnett, A. E. Ringwood et al. be here acknowledged. We were ably assisted in the microprobe work by A. Chodos. The argon analyses, made by D. D. Bogard, will be reported elsewhere. Contribution 1534 from the Division of Geological Sciences, California Institute of Technology.
Funders:
Funding AgencyGrant Number
NSFGP 3570
NSFGP 7976
NASANGR-05-002-044
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Caltech Division of Geological and Planetary Sciences1534
Record Number:CaltechAUTHORS:20131121-075702149
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20131121-075702149
Official Citation:Potassium-Feldspar Phenocrysts in the Surface of Colomera, and Iron Meteorite Author(s): G. J. Wasserburg, H. G. Sanz and A. E. Bence Source: Science, New Series, Vol. 161, No. 3842 (Aug. 16, 1968), pp. 684-687 Stable URL: http://www.jstor.org/stable/1725836
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:42607
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:21 Nov 2013 16:57
Last Modified:21 Nov 2013 16:57

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