Retention of actinides in natural pyrochlores and zirconolites

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dc.contributor.authorLumpkin, GRen_AU
dc.contributor.authorHart, KPen_AU
dc.contributor.authorMcGlinn, PJen_AU
dc.contributor.authorPayne, TEen_AU
dc.date.accessioned2022-11-04T04:59:46Zen_AU
dc.date.available2022-11-04T04:59:46Zen_AU
dc.date.issued1994-12-01en_AU
dc.date.statistics2022-10-25en_AU
dc.description.abstractNatural pyrochlore and zirconolite undergo a crystalline-aperiodic transformation caused by alpha-decay of 232Th and 238U at dose levels between 2X1014 and 3X1017 α/mg. The principal effects of the transformation are volume expansion and micro-fracturing, providing potential pathways for fluids. Geochemical alteration of the minerals may occur under hydrothermal conditions or in low temperature, near surface environments, but Th and U usually remain immobile and can be retained for time scales up to 10 9 years. However, the Th-U isotope systematics of a zirconolite-bearing vein and dolomite host rock may provide evidence for disequilibrium between 230Th, 234U and 238U. © 1994 R. Oldenbourg Verlag, Münchenen_AU
dc.identifier.citationLumpkin, G. R., Hart, K. P., McGlinn, P. J., & Payne, Τ. E. (1994). Retention of actinides in natural pyrochlores and zirconolites. Radiochimca Acta, 66/67 (Supplement), 469-474. doi:10.1524/ract.1994.6667.special-issue.469en_AU
dc.identifier.issn2193-3405en_AU
dc.identifier.issue66/67 (Supplement)en_AU
dc.identifier.journaltitleRadiochimica Actaen_AU
dc.identifier.pagination469-474en_AU
dc.identifier.urihttps://doi.org/10.1524/ract.1994.6667.special-issue.469en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/13992en_AU
dc.identifier.volume66/67 en_AU
dc.language.isoenen_AU
dc.publisherDe Gruyteren_AU
dc.subjectPyrochloreen_AU
dc.subjectActinidesen_AU
dc.subjectZirconoliteen_AU
dc.subjectAlpha decayen_AU
dc.subjectUraniumen_AU
dc.subjectThoriumen_AU
dc.subjectGeochemistryen_AU
dc.subjectPhysical radiation effectsen_AU
dc.titleRetention of actinides in natural pyrochlores and zirconolitesen_AU
dc.typeJournal Articleen_AU
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