CHARLTON, J.D.
Abstract
Puqila Geologic Mapping and Drilling The main potential for economic grade and tonnage along the extensive Puqila pegmatite zones is the Puqila North Zone. The thick, well-mineralized Puqila North pegmatite may extend to the southeast and east beneath Puqila North Hill. Detailed mapping to define the structural/stratigraphic relationships is required in advance of drill testing the interpreted strike and depth extensions. R7 Geological Mapping and Prospecting The significance of the R7 pegmatites is the interpreted sill-like extent on basement gneisses at the unconformity with the overlying Proterozoic metasediments. The unconformity is interpreted to extend several kilometres northward from the sampled R7 pegmatites. This horizon is considered to be highly prospective for additional unconformity-related uraniferous pegmatite sills and, accordingly, warrants further exploration. Quartzite Band Prospecting The radioactive layer of banded grey and white quartzite within the Lake Harbour metasedimentary sequence on the southern Daniel Lake Property requires further exploration. This layer appears to be a conformable, continuous stratigraphic unit within the gently south-dipping sequence. If so, it would be the first recorded syn-sedimentary uranium mineralization in this region. Mineralogy A characteristic of the uranium mineralization in the Daniel Lake Property pegmatites is that increase in uranium content is not accompanied by a proportionate increase in thorium content, in fact the U/Th ratio increases significantly with increasing uranium grade. An investigation of the uranium-bearing mineralogy of the pegmatites is warranted at this stage. It is also worthwhile investigating the light rare earth element (LREE) contents of the pegmatites. There exists an adequate sample database now at North Rae and Daniel Lake to analyze specific LREE contents, as well as U/Th relationships and other aspects of the mineralization.
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