The Christie Lake Project is host to the Paul Bay, Ken Pen and Ōrora Uranium Deposits. The Company holds a 60% direct interest in The Project in a joint venture with JCU Canada. The current total resource estimate for the three deposits is 20.35 Million lb U3O8 at an average grade of 1.57%. The ultimate size of the Paul Bay, Ken Pen and Ōrora Deposits has not been fully defined and they remain open at depth and along strike.
The Christie Lake project is located 9 km northeast of and along strike of the McArthur River Uranium Mine, the world’s largest producer. The Project straddles the Eastern Athabasca High Grade Uranium Corridor and is the only junior-controlled uranium land package that is situated between the two giant uranium operations at McArthur River and Cigar Lake.
UEX’s current focus has been to test targets along the Yalowega Trend, a 4.2 km corridor with anomalous uranium and indicative hydrothermal alteration that hosts three known high-grade uranium deposits, the Paul Bay Deposit, the Key Pen Deposit, and the recently discovered Ōrora Zone. Several high-priority targets that include historic mineralized holes have yet to be tested along the Yalowega Trend that have great potential to yield additional uranium discoveries.
The Christie Lake project area is underlain by Athabasca Group sandstone which unconformably sits on older folded and faulted metamorphosed sedimentary basement rocks of the Wollaston Domain. The Athabasca Group sandstone is covered by 30 to 90 m of glacial boulders, sand, and gravel forming extensive drumlins and esker features.
The prolific northeast trending P2 Fault structure, which hosts all the uranium at the nearby McArthur River deposits, the world’s largest and highest-grade uranium mine, extends onto the northwest corner of the Christie Lake property (Shown as Conductor “A” in the Christie Lake Property Map). This structure continues to the northeast and is offset to the east in two steps (B and C). Step C, the easternmost step is referred to as the Yalowega Trend.
Along the Yalowega Trend, the unconformity between the sandstone and basement rocks is approximately 420 m below surface. The primary structural zone is a left-lateral strike slip fault associated with zones of graphite within the basement metasedimentary rocks.
The Yalowega Trend hosts three known unconformity-related uranium deposits; Paul Bay, Ken Pen, and Ōrora. Paul Bay and Ken Pen were discovered by the previous operator in 1989 and 1993 respectively. Ōrora was discovered by UEX in 2017.
The Paul Bay Zone is a basement hosted uranium deposit occurring wholly within faulted basement rocks. The mineralized zone is 80 m wide and occurs as shoots extending up to 200 m down-dip into the basement along the intersection of small cross-faults with the main Yalowega Trend structure. The Yalowega Trend Fault at the unconformity up-plunge from the Paul Bay Deposit has yet to be tested and represents a great exploration target for a future drill program.
The Ōrora and Ken Pen Zones are unconformity uranium deposits which occur within faulted rocks straddling the unconformity. These zones extend lengthwise up to 160 m along the trend with shoots of mineralization and alteration extending into the basement along similar cross-fault intersections as seen at Paul Bay. The Ken Pen Deposit is known to extend up to 80 m into the basement, however the full extent of these zones into the basement has not been tested.
Several conductive packages trend northeast through the central and southern portion of the Christie Lake property and have never been examined and tested with drilling.
Table 1 Mineral Resource Statement*, Christie Lake Project, Saskatchewan, Canada, SRK consulting (Canada) Inc., December 13, 2018
|Deposit||Tonnage (000s)||Grade (%U3O8)||Contained Metal (Mlb U3O8)|
|Inferred Mineral Resources|
* Mineral resources are not mineral reserves and have not demonstrated economic viability. All figures have been rounded to reflect the relative accuracy of the estimates. Reported at a cut-off grade of 0.2% Uranium.
The maiden resource estimate for the Christie Lake Project is 20.35 Million lb U3O8 at the Paul Bay, Ken Pen, and Ōrora deposits using a 0.2% U3O8 cut-off grade. The average grade for the deposits is 1.57% U3O8. The resource estimate was developed using holes drilled by PNC between 1989 and 1997 and UEX from 2016 to 2018.
The resource estimate was completed by Aleksander Mitrofanov of SRK Consulting (Canada) Inc. With support from Dr. David Machuca and Mr. Glen Cole of SRK Consulting (Canada) Inc. Senior review was by Mr. Cliff Revering of SRK Consulting (Canada) Inc. The effective date for the resource estimate is December 13, 2018 (see UEX press release December 19, 2018). The early stage of the Project, widely spaced drilling, and uncertainty of the distribution of the grades necessitate classification of the resource as inferred by SRK.
Mineral resources are not mineral reserves and have not demonstrated economic viability. There is no certainty that all or any part of the mineral resources will be converted into mineral reserves.