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Uranium-bearing minerals of lunar rock 12013.The U distribution in rock 12013 was studied by fission track and elemental mapping techniques. Major U-bearing phases are whitlockite, apatite, zircon, and phase beta, which is a Zr-Ti mineral rich in Fe, Nb, Y, REE, and containing up to 3.6% UO2, 4.7% ThO2 and 4.2% PbO. Calculated microprobe ages for phase beta average 4.0 b.y. and are in reasonable agreement with Rb-Sr and K-Ar ages. Phase beta plays a significant role in the U-Th-Pb systematics of rock 12012 and may play a similar role in the model ages of lunar soil.
Document ID
19720026396
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1016/0012-821X(71)90070-7
Authors
Haines, E. L.
Albee, A. L.
Chodos, A. A.
Wasserburg, G. J. (California Institute of Technology, Jet Propulsion Laboratory and Div. of Geological and Planetary Sciences, Pasadena Calif., United States)
Date Acquired
August 6, 2013
Publication Date
October 1, 1971
Publication Information
Publication: Earth and Planetary Science Letters
Volume: 12
Subject Category
Space Sciences
Accession Number
72A10062
Funding Number(s)
CONTRACT_GRANT: NAS9-8074
Distribution Limits
Public
Copyright
Other

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