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TitleTill composition and biogeochemistry near a porphyry Cu-Mo deposit: Gibraltar Mine, British Columbia
DownloadDownloads
AuthorPlouffe, A; Anderson, R G; Dunn, C E
SourceGeological Survey of Canada, Open File 6755, 2011, 31 pages; 1 CD-ROM, https://doi.org/10.4095/287929 (Open Access)
LinksCanadian Database of Geochemical Surveys, downloadable files
LinksBanque de données de levés géochimiques du Canada, fichiers téléchargeables
Year2011
PublisherNatural Resources Canada
Documentopen file
Lang.English
MediaCD-ROM; on-line; digital
RelatedThis publication is related to Spirito, W A; McClenaghan, M B; Plouffe, A; McMartin, I; Campbell, J E; Paulen, R C; Garrett, R G; Hall, G E M; (2011). Till sampling and analytical protocols for GEM Projects: from field to archive, Geological Survey of Canada, Open File 6850
File formatpdf; xls
ProvinceBritish Columbia
NTS93B/08
AreaMcLeese Lake
Lat/Long WENS-122.5000 -122.0000 52.5000 52.2500
Subjectseconomic geology; surficial geology/geomorphology; geochemistry; mineral occurrences; mineral potential; mineralization; glacial deposits; tills; till geochemistry; copper; molybdenum; porphyry copper; porphyry deposits; ice movement; ice flow; ice movement directions; glacial features; striations; lithology; biogeochemistry; biogeochemical surveys; Gibraltar Mine; Cenozoic; Quaternary
Illustrationsphotographs; tables; location maps
ProgramGeoscience for Mountain Pine Beetle Response, Mountain Pine Beetle
ProgramIntrusion/Porphyry Ore Systems, Targeted Geoscience Initiative (TGI-4)
Released2011 03 21
AbstractDuring the 2008 field season, eleven till, six lodgepole pine and seven Engelmann spruce outer bark samples were collected near a porphyry Cu-Mo deposit (Gibraltar Mine) in central British Columbia. The purpose of this survey is to test the effectiveness of these sampling medium at detecting mineralization in regions where bedrock mineralization is covered with glacial sediments. Various fractions of the till matrix and bark samples were submitted for geochemical analyses. Our results demonstrate that minor elements (Au, Ag, Ba, Cu, Mo, Te, Zn) and one major oxide (Al2O3) are enriched to various degree in till down-ice from the Gibraltar ore bodies compared to background concentrations reported from the Bonaparte Lake map area south of the mine. Similarly, Cu and Mo are more enriched in lodgepole pine and Engelmann spruce outer bark near Gibraltar compared to the Bonaparte survey. These results attest to the utility of till and tree outer bark geochemical surveys as means to vector towards porphyry mineralization such as that contained in the Gibraltar ore bodies.
GEOSCAN ID287929