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TitleTill geochemical signatures of the Pine Point Pb-Zn Mississippi Valley-type district, Northwest Territories
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AuthorOviatt, N M; McClenaghan, M B; Paulen, R C; Gleeson, S A
SourceGeological Survey of Canada, Open File 7320, 2013, 59 pages, https://doi.org/10.4095/292906 (Open Access)
LinksCanadian Database of Geochemical Surveys, downloadable files
LinksBanque de données de levés géochimiques du Canada, fichiers téléchargeables
Year2013
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediadigital; on-line
RelatedThis publication is related to Hall, G E M; Hall, G E M; McClenaghan, M B; McClenaghan, M B; (2013). Field portable XRF in exploration and mining, New frontiers for exploration in glaciated terrain, Geological Survey of Canada, Open File 7374
File formatreadme
File formatpdf; xls; rtf
ProvinceNorthwest Territories
NTS85A/12; 85A/13; 85B/09; 85B/10; 85B/11; 85B/14; 85B/15; 85B/16
AreaGreat Slave Lake; Pine Point; Buffalo River
Lat/Long WENS-115.1667 -113.8333 61.0000 60.6667
Subjectssurficial geology/geomorphology; economic geology; geochemistry; indicator elements; mineral exploration; mineral deposits; Mississippi Valley deposits; drift prospecting; glacial deposits; geochemical analyses; heavy mineral analyses; lead; zinc; dispersal patterns; tills; till samples; stream sediment samples; sedimentary rocks; dolostones; limestones; breccias; carbonates; sulphides; Cenozoic; Quaternary
Illustrationslocation maps; photographs; ternary diagrams; tables
ProgramGEM Tri-Territorial information management & databases (Tri-Territorial Indicator Minerals Framework), GEM: Geo-mapping for Energy and Minerals
Released2013 10 02
AbstractExploration for base metal deposits using till geochemistry and indicator mineral methods has been the focus of many studies initiated in recent years. The University of Alberta, Geological Survey of Canada, Tamerlane Ventures Incorporated, and Teck Resources Limited are examining the indicator minerals and till geochemistry that characterize glacial dispersal from the Pine Point Mississippi Valley-type (MVT) district, Northwest Territories. This case study documents the clastic glacial dispersal down-ice from the O-28 former
open pit mine.
Aqua regia digestion/ICP-MS analysis of the <0.063 mm fraction of till identify Zn, Pb, Cd, Fe, Tl, S, and Se as the pathfinder elements associated with Pit O-28 in the Pine Point MVT district. Concentrations of Zn, Pb, and Cd are highest directly down-ice of the subcropping mineralization in the direction of the earliest recorded ice-flow trajectory (~230°). This geochemical signature does not appear detectable at the surface. This may be due to extensive till cover and dilution by multiple ice-flow trajectories, or due to the
extensive winnowing and reworking of the till surface by glacial Lake McConnell that inundated the region during deglaciation.
Summary(Plain Language Summary, not published)
This is a data release of the till geochemistry from samples collected under the GEM Tri-Territorial Indicator Minerals Project (2008-1013). It provides basic geochemical data from research conducted at the old Pine Point Mine site.
GEOSCAN ID292906