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This study, a part of the GEM2 South Rae Mapping Project, was carried out d...
This 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.
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