Publication Date:
1996-09-06
Description:
The IIIA and IIIB iron meteorites are considered to have formed in the cores of asteroids. A silicate inclusion within the IIIA meteorite Puente del Zacate consisting of olivine (Fa4), low-calcium pyroxene (Fs6Wo1), chromium diopside (Fs3Wo47), plagioclase (An14Or4), graphite, troilite, chromite, daubreelite, and iron metal resembles inclusions in IAB iron meteorites. The oxygen isotopic composition of the Puente del Zacate inclusion is like chromite and phosphate inclusions in other IIIA and IIIB irons. The Puente del Zacate inclusion may have been derived from the lower mantle of the IIIAB parent asteroid.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Olsen, E J -- Davis, A M -- Clayton, R N -- Mayeda, T K -- Moore, C B -- Steele, I M -- New York, N.Y. -- Science. 1996 Sep 6;273(5280):1365-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of the Geophysical Sciences, University of Chicago, Chicago, IL 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8703065" target="_blank"〉PubMed〈/a〉
Keywords:
*Meteoroids
;
*Oxygen Isotopes
;
Silicates/*analysis
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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