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TitleCrandallite-group minerals: host of thorium enrichment in the eastern Athabasca Basin, Saskatchewan
DownloadFree download (whole publication) (zip 291344 KB)
AuthorMwenifumbo, C J; Bernius, G R
SourceEXTECH IV: Geology and Uranium EXploration TECHnology of the Proterozoic Athabasca Basin, Saskatchewan and Alberta; by Jefferson, C W (ed.); Delaney, G (ed.); Geological Survey of Canada, Bulletin no. 588, 2007 p. 521-532; 1 CD-ROM, https://doi.org/10.4095/223795
Year2007
Alt SeriesSaskatchewan Geological Society Special Publication 18
Alt SeriesGeological Association of Canada, Mineral Deposits Division, Special Publication 4
PublisherNatural Resources Canada
Documentserial
Lang.English
Mediapaper; CD-ROM
RelatedThis publication is contained in Jefferson, C W; Delaney, G; (2007). EXTECH IV: Geology and Uranium EXploration TECHnology of the Proterozoic Athabasca Basin, Saskatchewan and Alberta, Geological Survey of Canada, Bulletin no. 588
RelatedThis publication is contained in Jefferson, C W; Delaney, G; (2007). EXTECH IV: Geology and Uranium EXploration TECHnology of the Proterozoic Athabasca Basin, Saskatchewan and Alberta, Geological Survey of Canada, Bulletin no. 588
ProvinceSaskatchewan
NTS74H/14
AreaMcArthur River
Lat/Long WENS-105.5000 -105.0000 58.0000 57.7500
Subjectseconomic geology; geophysics; mineral exploration; exploration; uranium; uranium deposits; mineralization; unconformity-type deposit; unconformities; sedimentation; sedimentary rocks; sandstones; conglomerates; mudstones; basins; sedimentary basins; basement geology; bedrock geology; lithostratigraphy; Archean; geophysical surveys; seismic surveys; thorium; gamma-ray spectrometers; gamma-ray surveys; Athabasca Basin; Athabasca Group; Rae Province; Hearne Province; Manitou Falls Formation; crandallite; Precambrian; Proterozoic
Illustrationssketch maps; tables; plots; photomicrographs; seismic logs
ProgramAthabasca Uranium Multi-disciplinary Study, Exploration Science and Technology (EXTECH IV) Initiative, 2000-2003
ProgramNorthern Resources Development Program
ProgramSecure Canadian Energy Supply
Released2007 07 20
AbstractSpectral gamma-ray logs in the McArthur River area in eastern Athabasca Basin indicate anomalously high thorium content in the conglomeratic Bird Member and the lower part of the Collins Member of the Manitou Falls Formation. The distribution of Th in such coarse-grained fluvial strata is usually associated with accessory minerals in the heavy-mineral fraction. Instead, petrographic, chemical, and
SEM analyses reported here show that Th in the Manitou Falls Formation conglomerate beds resides in a Th-rich aluminophosphate mineral. It belongs to the solid-solution series of the crandallite group, including crandallite (CaAl3(PO4)2(OH)5·H2O) and goyazite (SrAl3(PO4)2(OH)5·H2O). Crandallite-group minerals form in highly acidic environments and are associated with clay minerals such as illite. A more extensive investigation is required to determine the relationships between the Th-rich crandallite-group phase, clay minerals, and the hydrothermal processes that operated during the formation of uranium deposits in the Athabasca Basin.
GEOSCAN ID223795