Published April 1984
| public
Journal Article
Microprobe analyses of rare earth element fractionation in meteoritic minerals
Abstract
Two meteorites were analyzed by PIXE with the Los Alamos nuclear microprobe. The enstatite achondrite Peña Blanca Spring and the ordinary chondrite St Severin were chosen as likely candidates for use in ^(244)Pu(t_(l/2)=82 my) cosmochronology and geochronology. These applications require the meteoritic minerals to have unfractionated actinides and lanthanides relative to "cosmic" elemental abundance ratios. The PIXE analyses produced evidence of actinide-lanthanide fractionation in Peña Blanca Spring oldhamite (CaS) whereas the St Severin phosphates, whitlockite and chlorapatite, do not exhibit this fractionation.
Additional Information
© 1984 Published by Elsevier B.V. Available online 17 October 2002. This work was supported by the University of California, Institute of Geophysics and Planetary Physics (Grant #82-034), and by the United States Department of Energy, Office of Basic Energy Sciences, under contract KC-040302-0.Additional details
- Eprint ID
- 56985
- Resolver ID
- CaltechAUTHORS:20150427-070213286
- 82-034
- University of California, Institute of Geophysics and Planetary Physics
- KC-040302-0
- Department of Energy (DOE)
- Created
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2015-04-27Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences