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Radiogenic Xenon-129 in Silicate Inclusions in the Campo Del Cielo Iron MeteoriteIron meteorites present a challenge for the I-Xe dating technique because it is usually the inclusions, not metal, that contain radiogenic xenon and iodine. Silicate inclusions are frequent in only types IAB and IIE, and earlier studies of irons have demonstrated that I-Xe system can survive intact in these inclusions preserving valuable age information. Our previous studies of the I-Xe record in pyroxene grains from Toluca iron suggested an intriguing relationship between apparent I-Xe ages and (Mg+Fe)/Fe ratios. The I-Xe system in K-feldspar inclusions from Colomera (IIE) had the fingerprint of slow cooling, with an indicated cooling rate of 2-4 C/Ma. Here we present studies of the iodine-xenon system in a silicate-graphite-metal (SiGrMet) inclusion of the IA Campo del Cielo iron meteorite from the collection of the Museum of Natural History in Vienna.
Document ID
20040062428
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Meshik, A.
(Washington Univ. Saint Louis, MO, United States)
Kurat, G.
(Naturhistorisches Museum Vienna, Austria)
Pravdivtseva, O.
(Washington Univ. Saint Louis, MO, United States)
Hohenberg, C. M.
(Washington Univ. Saint Louis, MO, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Publication Information
Publication: Lunar and Planetary Science XXXV: Achondrite Mishmash
Subject Category
Lunar And Planetary Science And Exploration
Funding Number(s)
CONTRACT_GRANT: NAG5-12776
Distribution Limits
Public
Copyright
Public Use Permitted.
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