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TitleGeochemistry results from the south Rae mapping project, Northwest Territories, 2015 and 2016 field seasons
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorAcosta-Góngora, P; Martel, E; Pehrsson, S J
SourceGeological Survey of Canada, Open File 8364, 2018, 8 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
File formatreadme
File formatpdf; rtf; xls
ProvinceNorthwest Territories
NTS75A; 75B; 75G; 75H/03; 75H/04; 75H/05; 75H/06; 75H/11; 75H/12; 75H/13; 75H/14
AreaHoward Lake; Lynx Lake; Wholdaia Lake
Lat/Long WENS-108.0000 -104.0000 62.0000 60.0000
Subjectseconomic geology; geochemistry; geophysics; structural geology; mineral deposits; mineral potential; mineral exploration; precious metals; base metals; gold; tin; ore mineral genesis; mineralization; geophysical interpretations; radiometric anomalies; gamma-ray spectrometers; uranium; thorium; magnetic field; hydrothermal alteration; assays; geochemical analyses; major element analyses; trace element analyses; geochemical anomalies; core samples; bedrock geology; structural features; faults; host rocks; tectonic setting; Archean; Churchill Province; Rae craton; Snowbird Tectonic Zone; Black Bay Fault Zone; Gemelo showing; Nickel King Deposit; Howard Lake Domain; Lynx Lake Domain; Porter Domain; Penylan Domain; McCann Domain; Wholdaia Lake Domain; Ena Domain; Firedrake Domain; Snowbird Domain; Precambrian
Illustrationsgeoscientific sketch maps; photographs
ProgramGEM2: Geo-mapping for Energy and Minerals South Rae Province Bedrock/Surficial geology
Released2018 02 14
AbstractThis study, a part of the GEM2 South Rae Mapping Project, was carried out during 2015 and 2016 in the southeastern portion of the Canadian Northwest Territories, in the area comprising the South Rae craton (NTS map sheets 75B, H, G, A). During the regional mapping four new radiometric anomalies were recognized and several locales of hydrothermal alteration were outlined. All the radiometric anomalies are located in the northeast (Gemelo showing) and southwest (Sarita, Hidden, Triple-X) portions of NTS 86B along the Black Bay fault. Regional geochemical assay samples were taken to investigate the metal signature of rocks at these locales and in potentially prospective samples throughout the study area.
Here we report concentrations for major, trace, rare earth, and platinum group elements, and precious and base metals of 65 samples, including a number showing anomalous concentrations. We report the first ever showings in NTS 86B and G: new REE (Gemelo; 0.8 wt.% REE) showing. The Gemelo showing occurs near the northeastern terminus of the Black Bay fault. The geochemical results obtained from material collected at the southwest Black Bay fault radiometric anomalies show no particular U, Th and rare earth element enrichments.
Summary(Plain Language Summary, not published)
This study was carried out in the southern portion of the Canadian Northwest Territories, in the area comprised by the South Rae craton (NTS map sheets 75B,H,G,A). Here we report concentrations for major, trace, rare earth, and platinum group elements, along with precious and base metals of 65 samples and various new radiometric anomalies found during the course of the South Rae Mapping Project 2015 and 2016 field campaigns.

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