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TitleU, Th, REE occurrences within Nueltin granite at Nueltin Lake, Nunavut: recent observations
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AuthorScott, J M J; Peterson, T D; McCurdy, M W
SourceGeological Survey of Canada, Current Research (Online) no. 2012-1, 2012, 15 pages, https://doi.org/10.4095/289393 (Open Access)
LinksCanadian Database of Geochemical Surveys, downloadable files
LinksBanque de données de levés géochimiques du Canada, fichiers téléchargeables
Image
Year2012
PublisherNatural Resources Canada
Documentserial
Lang.English
Mediaon-line; digital
File formatpdf
ProvinceNunavut
NTS65B; 65C
AreaSchultz Lake; Nueltin Lake
Lat/Long WENS-102.0000 -98.0000 61.0000 60.0000
Subjectsgeochronology; igneous and metamorphic petrology; geochemistry; Archean; igneous rocks; zircon dates; neodymium samarium dates; granites; mineralization; uranium; thorium; rare earths; whole rock geochemistry; petrographic analyses; aplites; dykes; Nueltin granite; Dubawnt Supergroup; Precambrian; Proterozoic
Illustrationsgeochemical analyses; location maps; photographs; tables; plots
ProgramUranium, GEM: Geo-mapping for Energy and Minerals
Released2012 03 02 (13:00)
AbstractTwo anomalous occurrences of primary uranium, thorium and rare earth elements in the Nueltin Lake area are associated with an aplite dyke and a pegmatitic seam. Both are hosted within the Nueltin granite suite. The occurrences are rich in urano-thorite and allanite, which are also present in the host Nueltin granite. The aplite dyke is enriched in uranium (56.8 ppm) and thorium (787 ppm) and the pegmatitic seam is enriched in uranium (589.3 ppm), thorium (8461.4 ppm) and rare earth elements (total 86,153 ppm), an enrichment magnitude of 10-100 times relative to the host pluton. Parallel trending trace element patterns indicate that the anomalies most likely represent late-stage, highly fractionated melts (fluids?) from Nueltin granite.
GEOSCAN ID289393