Mayo Lake Claims Groups, Yukon Territory
           
   

Anderson-Davidson Claim Group

The Anderson-Davidson claim group is composed of 605 contiguous quartz claims covering an area of 125 square kilometres near the community of Mayo, Yukon, Canada on NTS map sheets 105M 10/11/12/14. The claim group is over 30 kilometres long covering the highlands south of Mayo Lake where several placer operations actively recover gold from creeks draining into Mayo Lake, Mayo River or Janet Lake.

Access to Anderson-Davidson is provided by a seasonal road connecting placer operations on Davidson Creek to the all-weather Mayo Lake Road, which connects to the Silver Trail Highway. A pre-existing, four-wheel drive track runs east-west through the center of the claim group, connecting Williamson Lake to the Davidson Creek placer operations. There is a boat launch at the Mayo Lake Dam and this gives the northern rim of the claim group access from the water. The entire claim group is easily accessed via helicopter from the airport in Mayo.

The Property extends across a broad highland fronting Mayo Lake from Curley Creek in the west to Steep Creek in the east. Most tributaries leading to main valleys are narrow and confined by moderate to steep slopes. Uplands generally have moderate slopes. The majority of streams draining the property are part of the Mayo River watershed, with the exception of the southwest corner which drains through Janet Lake to the Stewart River.

The area has been subjected to multiple glaciations. The youngest Pleistocene glaciation, the McConnell Glaciation, was confined to the valleys occupied by Mayo, Janet and Williamson lakes. Westward moving fast-flowing ice scoured the bottoms and sides of these major valleys. The upper limit of the McConnell Glaciation is marked by lateral moraines and kame terraces along the sides of these valleys and are visible along breaks in slope on the claim group. The uplands were covered by glacial ice during an older glaciation, the Reid Glaciation. Due to the elevation of the upland, the ice was probably cold-based and transport of rock and debris was minimal as is evidenced by landforms. The surface cover is mapped as a mixture of colluvium and till. Patches of buried colluvium and alluvial benches may be representative of the Reid and older Pleistocene glaciations.

The Anderson-Davidson claim group is underlain by phyllites, schists and carbonates of the Hyland Group metasediments, occasionally intruded by felsic dykes. Most stratigraphy has bedding parallel or sub-parallel to foliation, which dips shallowly generally southeast except where modified by small scale isoclinal folding. Outcrop is sparse on the property, rarely exceeding 5 per cent in any area. Soil development is immature.

There is a long history of placer mining at Anderson-Davidson. Currently Davidson Creek is mined continuously during the summer season whereas Anderson Creek and Dawn Gulch are operated more sporadically. During Operation Keno several creeks draining the north of the property were sampled, yielding analysis of up to 275,000 ppm Au in heavy mineral concentrates. Samples from the Yukon’s regional stream geochemistry are sparse on Anderson-Davidson, but confirm the presence of the Anderson Gold Trend on the eastern part of the property.

MLM delineated numerous geochemical targets from ridge and spur sampling (Figures 4 and 5). Testing one of these targets, MLM delineated the Anderson Gold Trend, a 10-kilometre-long zone of elevated and anomalous Au-As-Sb values. Many geochemical targets remain to be tested on the Property both within and outside of the Anderson Gold Trend.

Figure 4: Significant gold trends and anomalies on Anderson-Davidson

Figure 5: Geochemical highlights from geochemical sampling on Davidson Creek

MLM identified three gold-in-soil anomalies with zones more than 50 ppb Au for greater than 200 m of strike length in zones of elevated Au up to 2-kilometre-long within the Anderson Gold Trend (Figures 6, 7 and 8). Significant sections of these soil anomalies contain greater than 100 ppb Au with analysis up to 500 ppb. These targets remain open along strike in up to three directions, in some cases following untested topographic depressions. Test pits from the Anderson Creek target yielded a grab sample with 3.5 g Au/t.

Figure 6: Anderson Creek Gold Target

Figure 7: Steep Creek Gold Target

Figure 8: Peak Gold Target

 

   
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