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The Blue Angel. I - The mineralogy and petrogenesis of a hibonite inclusion from the Murchison meteoriteResults are presented of a mineralogical and petrological examination of a relatively large hibonite-containing inclusion in the Murchison chondrite called the Blue Angel. Mechanisms of formation and modification of hibonite-rich inclusions are investigated. Evidence is found that modifying processes occurred before the inclusion was incorporated into its present location, which indicates a sequence of aqueous and metamorphic alteration followed by disruption and relithification of the protometeoritic material. The mineral chemistry and petrography of the Blue Angel is consistent with a three stage formation history, and extensive alteration of Ca-Al-rich inclusions may have occurred by aqueous alteration and thermal metamorphism followed by explosive mixing processes on a parent body.
Document ID
19820046786
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Armstrong, J. T.
(California Inst. of Tech. Pasadena, CA, United States)
Meeker, G. P.
(California Inst. of Tech. Pasadena, CA, United States)
Huneke, J. C.
(California Inst. of Tech. Pasadena, CA, United States)
Wasserburg, G. J.
(California Institute of Technology Pasadena, CA, United States)
Date Acquired
August 10, 2013
Publication Date
April 1, 1982
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 46
Subject Category
Lunar And Planetary Exploration
Accession Number
82A30321
Funding Number(s)
CONTRACT_GRANT: NGL-05-002-188
CONTRACT_GRANT: NSF PHY-79-2368A2
Distribution Limits
Public
Copyright
Other

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