Gorilla Lake

GorillaLakeProject 01
Figure 1. Location map for the Gorilla Lake Project

The Gorilla Lake Property is a uranium project located in the Athabasca Basin of Saskatchewan, Canada, one of the most prolific uranium regions in the world.

Logan has historically referred to the Gorilla Lake Property as the Carswell Property in its public disclosure but has renamed the project to be aligned with ALX Uranium Corp.’s Cluff Lake properties. The Gorilla Lake Property is held 80% by ALX; with Logan having a 20% carried interest through feasibility. ALX is the operator of the Property.

Gorilla Lake is located in the western portion of the Athabasca Basin, northern Saskatchewan. The Property consists of two contiguous mineral claims totaling 7,552 ha (18,661 acres). The Property is within the Carswell Dome structure, about 5km north of Areva Resource's former producing Cluff Lake deposit which mined approximately 62 million pounds of uranium (U3O8) from shallow deposits with open pits and near surface underground operations.

Logan Resources acquired the property in 2004 and in 2005 optioned the property to ESO Uranium Corp., a predecessor company to ALX Uranium Corp. Currently, ALX has an 80% ownership interest with Logan’s 20% interest carried through feasibility.  

Figure 2. Claim Map

Figure 3. Geology Map

The Gorilla Lake Property is located within the northern portion of the Carswell Structure, where crystalline rocks of the southern Rae Province are exposed in an uplifted central core about 19 km in diameter.  Potential bedrock sources of the uraniferous boulders in the Gorilla Lake area are modeled upon the Cluff Lake-style deposits located within basement core of the Carswell Structure, possibly associated with Athabasca sandstone inliers, and at the Carswell basement core-Athabasca Group contact. Electromagnetic (EM) conductors are not seen as an essential exploration target on the Property, as the deposits at Cluff Lake contained lesser quantities of graphite and pyrite compared to the Triple R (Patterson Lake South) and Key Lake deposits. Transition areas from high to low magnetic susceptibility are considered a favourable setting for uranium mineralization as this may represent granitic to granitic pegmatite domes in contact with quartzofeldspathic and pelitic gneisses. Additionally, structures that act as boundaries between low magnetic and moderately magnetic zones are targeted and are significant because boulders of mineralized meta-sediments (low magnetic response) and mineralized intrusives (moderate to high magnetic signature) were found during historical boulder prospecting. In addition, in this area the basement has been overturned and lies above the sandstone. The possibility for unconformity uranium mineralization therefore also exists in this area.

The exploration potential of the Gorilla Lake property is well established from nearly five decades of exploration in the region. Important attributes for uranium potential include strong structural zones with known uranium mineralization and clay alteration in drill holes and numerous conductors, as defined by airborne and ground EM surveys. In 2006, ESO Uranium Corp., a predecessor company to ALX, drilled extensions to known mineralization intersected by Amok in 1979 (0.85% U3O8 over 2.5 m in hole CAR-425) in two of the six holes drilled. Drill hole CLU‑01 intersected 0.46% U3O8 over 1.5 m from 174.0 to 174.5 metres. Drill hole CLU‑07 intersected two zones of uranium mineralization: one zone returned 0.17% U3O8 over 7.0 metres from 153.0 to 160.0 m, including 0.82% U3O8 over 1.0 metre and a second zone contained 0.20% U3O8 over 2.0 m from 175.0 to 177.0 metres. These step-out holes confirmed the presence of uranium in the area of previous hole CAR-425. The uranium mineralization intersected in drill holes CLU-01 and CLU-07 is associated with a virtually untested structure extending over at least 1,700 metres. This structure represents a prime target for further drilling.

The results of a recent ground gravity survey conducted on the Property in the winter of 2016 identified two significant gravity anomalies to the east and west of Gorilla Lake and confirmed a third geophysical anomaly approximately 1,500 metres south of Gorilla Lake as follows:

  1. Anomaly “A”: The area to the east of Gorilla Lake showed a distinct northeast-trending gravity low on the northeast side of the survey area with extremely low residual gravity.  This area is coincident with known drill intercepts of uranium mineralization.
  2. Anomaly “B”: The area to the west of Gorilla Lake represented a new anomaly consisting of a large northeast-trending gravity low west of Gorilla Lake.
  3. Anomaly “C”: To the south of Gorilla Lake, gravity work completed over the circular magnetic anomaly and Z-channel Ad-Tau electromagnetic anomaly showed a distinct northeast-southwest striking gravity low.

Figure 4. 2017 Drill Targets

Figure 5. Historical Mineralized Drill Holes


In March 2017, ALX Uranium Corp. carried out a diamond drilling program of four holes totaling 1,116 meters. Results were announced by ALX in a May 2, 2017 news release, with no significant economic results reported. Please click here to view the ALX news release outlining the full drill results.

Stewart Wallis is the Qualified Person as defined by National Instrument 43-101 for the above-mentioned project. The QP is a member in good standing of the Association of Professional Engineers and Geoscientists of British Columbia (APEGBC) as a registered Professional Geoscientist (P.Geo.). Mr. Wallis has reviewed and is responsible for the technical information disclosed above.