Projects

Kelic Lake

The Kelic Lake property straddles the southern margin of the Athabasca Basin, east of the recent discoveries along the southern margin of the Basin at Patterson Lake. Major regional structures are a critical element to the formation of unconformity-type uranium deposits in the Athabasca Basin. The Kelic Lake property is in between the eastern boundary of the Clearwater Domain and the crustal-scale Virgin River shear zone which is regional host to the Centennial uranium deposit.

Highlights

The exploration potential of the Kelic Lake property is well established from nearly three decades of exploration in the region. Important attributes for uranium potential include:

  • Strong structural zones with known uranium enrichment and clay alteration in drill holes;
  • Conductive graphitic pelites, as defined by airborne and ground electromagnetic (EM) surveys, and confirmed locally by diamond drilling;
  • Strongly anomalous uranium values in historical lake sediment and biogeochemical sampling surveys; and

Irregular depth to the unconformity as defined by drilling, an indication of potential structural offset and conducive for concentration of uranium hydrothermal fluids.

Location

  • Southwestern margin of the Athabasca Basin, northern Saskatchewan

Proximity to Uranium Discoveries, Deposits, Mills and Mines

  • 50 km (approx.) east of Highway 955.
  • 65 km (approx.) east of the Patterson Lake South deposit.
  • 70 km (approx.) southwest of the Centennial Deposit on the Virgin River shear zone.

Recent Exploration
2014

  • CGG Canada Services Limited (formerly Fugro Geoservices Ltd.) of Mississauga, Ontario completed a high resolution airborne magnetic and gamma-ray spectrometry survey: 1200 line-km flown at 100-metre line spacing covering a grid area of approximately 10 x 10 km (see Alpha news release dated October 14, 2014).
  • The magnetic signature reflects tightly folded and fractured basement rocks (gneiss) which extend to the north under the Athabasca sediments as indicated from the residual magnetic intensity. The sediments deepen to the north. There is a dominant north-south fault that runs through the centre of the block which sets it apart from the main tectonic grain of the Archean that runs north northeast-south southwest as seen in the residual magnetic intensity first vertical derivative. None of the basement structures defined by the magnetic signature are reflected in the terrain which indicates that, even in the southern part of the block where the basement rocks technically “outcrop”, the surface is likely covered by a blanket of glacial deposits.
  • The response from the gamma ray spectrometry noted that higher levels of gamma ray radiation are present over the Archean gneiss in the southern part of the block compared to the Athabasca sediments in the north as would be expected. The boundary between the two is distinct and can be used to roughly define the Athabasca Basin margin. Very low counts on the total count air absorbed dose rate occur over water or where ground moisture is significant and the radiometric counts are suppressed. Similar results were found for potassium concentration, equivalent uranium concentration and equivalent thorium concentration.

2015

  • CGG Aviation (Australia) Pty Ltd. of West Perth, Australia completed a FALCON® airborne gravity gradiometer gravity survey which included magnetic and laser scanning digital elevation components: 1210 line-km flown at 200-metre line spacing covering a grid area of approximately 10 x 11.5 km (see Alpha news release dated March 12, 2015).
  • The survey showed the magnetic signature reflects tightly folded and fractured basement rocks (gneiss) which extend to the north under the Athabasca sediments as indicated from the residual magnetic intensity. The sediments deepen to the north. There is a dominant north-south fault that runs through the centre of the block which sets it apart from the main tectonic grain of the Archean that runs north northeast-south southwest as seen in the residual magnetic intensity first vertical derivative. None of the basement structures defined by the magnetic signature are reflected in the terrain which indicates that, even in the southern part of the block where the basement rocks technically “outcrop”, the surface is likely covered by a blanket of glacial deposits.
  • The FALCON® gravity gradiometry response is relatively small with gD exhibiting a full range of approximately 6 mGal and GDD range of 140 eotvos. The gD shows a high to the east with the boundary appearing to be offset in places and trending predominantly north northwest-south southeast. The offsets are likely a result of crosscutting faults. Many of the gravity anomalies have expressions on both the gD and GDD suggesting vertical extent.

Historical Exploration

The Kelic Lake area has been explored for uranium since the early 1970s. The main activity around Kelic Lake occurred between 1974 and 1980. Several drill programs were completed. A work history includes:

1969
Bow Valley Land Company Limited completed airborne radiometric and magnetic surveys along with a photogeologic evaluation, with some follow-up ground prospecting (Mason, 1969).
1974 – 1980
Uranerz Exploration and Mining Ltd. (Uranerz) completed lake-bottom sediment sampling, airborne radiometric surveying and ground prospecting (Lehnert-Thiel, 1975; Lehnert-Thiel, 1976).
1976 – 1977
Uranerz completed airborne EM and magnetic geophysics (Geoterrex EM-30 system), ground magnetic, VLF and vertical loop EM surveying in the area of Kelic Lake Claim 4432 (Lehnert-Thiel and Rich, 1977).
1977 – 1978
Uranerz completed lake-bottom sediment sampling, “bog” (muskeg) sampling, “geobotany” (biogeochemical) sampling and prospecting (Lehnert-Thiel et al., 1978; Rich et al., 1978).
1977
Wyoming Minerals Corporation completed regional-scale exploration program that consisted of lake sediment and lake water collection and analysis, radon in water sample analysis, prospecting and VLF-EM and magnetic surveying.
1978 – 1979
Saskatchewan Mining Development Corporation (SMDC) completed airborne INPUT (electromagnetic and magnetic) geophysical surveys, as well as ground VLF and vertical loop geophysical surveys. Prospecting and regional lake sediment sampling was also undertaken.
1976 – 1980
Denison Mines Ltd. completed airborne electromagnetic and magnetic surveys, VLF-EM surveys, vertical loop surveys, gravity surveys, radiometric surveys, magnetometer surveys, ground prospecting and drilling (Chen, 1977; Buchanan, 1978; Buchanan and Arai, 1979).
1979 – 1980
Denison Mines Ltd. completed regional ground mapping and prospecting; airborne electromagnetic, magnetic and radiometric surveys.
1977 – 1979
Kerr Addison Mines Limited completed regional-scale IP & Resistivity surveying and horizontal-loop-electromagnetic (HLEM) Max-Min surveying and regional-scale lake-sediment sampling.
1990
Rio Algom Exploration Inc. completed re-sampled 14 historic holes (from the property) and analyzed for trace-element and clay mineral characterization. Also one line of ground geophysics over Kelic Lake with the HLEM (Max-Min) system was conducted.
2005 – 2007
JNR Resources Inc. completed a VTEM airborne EM and magnetic survey.
2007
JNR Resources Inc. conducted follow-up ground geophysics consisting of a total of 105.2 line-km of fixed loop transient electromagnetic surveys over four grid areas. In total, 24.0 line-km of multi-frequency HLEM (Max-Min) survey data were collected.
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