Next Article in Journal
Effect of Cu2+ on the Activation to Muscovite Using Electrochemical Pretreatment
Previous Article in Journal
Ultrafast Elemental Mapping of Platinum Group Elements and Mineral Identification in Platinum-Palladium Ore Using Laser Induced Breakdown Spectroscopy
Previous Article in Special Issue
The Role of Continental Crust in the Formation of Uraninite-Based Ore Deposits
Open AccessArticle

Geochronology of Uraninite Revisited

Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, IN 46556, USA
Author to whom correspondence should be addressed.
Minerals 2020, 10(3), 205;
Received: 15 January 2020 / Revised: 21 February 2020 / Accepted: 22 February 2020 / Published: 25 February 2020
(This article belongs to the Special Issue Nuclear Forensic Applications in Geoscience and Radiochemistry)
Identification of uraninite provenance for the purpose of nuclear forensics requires a multifaceted approach. Various geochemical signatures, such as chondrite normalized rare earth element patterns, help identify and limit the potential sources of uraninite based on the geological setting of the uranium ore mineralization. The inclusion of accurate age determinations to discriminate geochemical signatures for natural uranium ores may help to potentially restrict geographical areas for provenance consideration. Determining a robust age for uraninite formation is somewhat difficult, due to well known, inherent difficulties associated with open system behavior that involve either uranium and/or lead loss or gain. However, open system behavior should not perturb their Pb isotopic compositions to the same degree as Pb isotopes should not fractionate during alteration processes. Here, a suite of pristine and altered samples of uraninite was examined for their Pb isotope compositions, and these yielded geologically meaningful secondary Pb–Pb isochron ages. The degree of alteration within individual uraninite samples, which is extremely variable, does not appear to affect the calculated ages. The approach adopted here yields insightful age information, and hence, is of great value for source attribution in forensic analyses of raw nuclear materials. View Full-Text
Keywords: uraninite; Pb–Pb isochron; nuclear forensics uraninite; Pb–Pb isochron; nuclear forensics
Show Figures

Figure 1

MDPI and ACS Style

Corcoran, L.; Simonetti, A. Geochronology of Uraninite Revisited. Minerals 2020, 10, 205.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop