Lampin Lake Property
Evaluation of ground/airborne geophysics and historical drilling in and around the Lampin Lake Project and has identified a high value target, dubbed the Shamus Zone. The Lampin Lake Project consists of a single 500ha disposition located on the eastern margin of the Athabasca basin. The Project lies in the Waterbury Lake district, ~16km southeast of Hathor’s Roughrider discovery. It is bordered by claims held by UEX to the east (Hidden Bay Project) and Cameco on all other sides.
The Shamus Zone is characterized by a 500-750m wide northwest trending Bouguer Gravity low feature, beginning at Cameco’s Q12A zone and ending several kilometers on the southwest corner of the Lampin Lake claim boundary. The gravity anomaly is roughly perpendicular to the Telephone Fault, may indicate a region of alteration, some of which has been subject to desilicification. The Telephone fault is nterpreted as the primary control of this zone. Within gravity anomaly, the primary target is a series of subtle conductors coincident with magnetic lows, which appear to be related to extensions of Cameco’s Q12A conductor series. The subtle conductors were identified through detailed interpretation of VTEM data, acquired by Unity in a survey completed in 2011.
Cameco’s Q12A zone (some 500m to the south) shows areas of intermittent uranium mineralization at the unconformity and has been interpreted as the outlying edge of an alteration zone. Cameco and Asamara Oil have tested the Q12A zone with several ground geophysical surveys and extensive diamond drilling. Asmara Oil’s diamond drilling of the Q12A grid intersected notable uranium mineralization as follows: Q12A-009 (4.0m of 0.13% U3O8 @ 197m), Q12A-003 (0.4m 3159ppm U3O8 @ 219.9m) and Q12A-005 (0.3m 0.073% U3O8 @ 180.1m), The most significant hole reported by Cameco was Q12A-011: 1.7m of 2.46% U3O8 at ~192m.
It is the Company’s exploration hypothesis that the absence of strong conductors near or at the Telephone Fault may be a result of graphitic consumption or remobilization by alteration events. Several major uranium discoveries in the Athabasca Basin such as McArthur River, Key Lake and Millennium were primarily the result of drill-testing of strong alteration zones related to conductor features, not the drill testing of specific graphitic conductors. The Key Lake and Millennium deposits, which were initially missed in first-pass drilling, were discovered by step-out fenced holes drilled across alteration zones. Millennium was discovered by drilling “off conductor” and deeper into a basement alteration system. McArthur River was found by drilling along the strike-trend of a pronounced alteration system where conductors were largely absent. The Company is in the process of evaluating “next step” exploration phases. A ground survey (such as gravity, resistivity or 2D seismic) would likely precede diamond drilling.
1982, Asamera completed diamond drill hole Q12A-009, just a few hundred meters south of the Lampin Lake Project boundary. The hole intersected a strongly sheared, reduced, yellow brown to olive green chlorite schist between 196.7m and 200.7m (645.3 to 658.5ft) which returned 0.13% U3O8 over 4.0m (13.1 ft). The mineralization consists of sooty black pitchblende along foliation and hairline fractures within the chlorite schist. (SMDI 1969) The area is underlain by 182m (597ft) of paleohelikian Athabasca Group sandstones and conglomerates. This is unconformably underlain by a series of Wollaston Domain pelitic to semipelitic metasediments which contain local interlayered meta-arkose, quartzite, calc-silicate, and marble horizons.
From 2004-2006, Cameco tested the northeast trending Q12 EM conductor series with ground geophysics and diamond drilling. EM and gravity surveys allowed for the interpretation of the Q12 fault, as well as numerous cross faults that extend onto the Lampin Lake Project. In addition, a northeast resistivity high, extending for ~750m along the southeastern edge of the Lampin Lake Project was further defined by EM inversions.
In September 2002, UEX Corporation and Cameco Corporation commissioned a fixed-wing triaxial gradiometer aeromagnetic survey to cover the entire Hidden Bay and Rabbit Lake properties. Goldak Airborne Surveys of Saskatoon, Saskatchewan was contracted to carry out the survey and a total of 6,816 line kilometres of data was collected along 200 metre spaced flight lines. The data collected from this survey was combined with a project-scale EM conductor map to facilitate a regional geological and structural interpretation. Emphasis was placed on identifying the principal geological units, the most prominent structural features, and the areas most prospective for finding uranium mineralization. Features of key uranium deposits in the area were considered when determining the areas most prospective for further exploration. A total of seventeen priority target areas, including three that lie on open ground, were noted by Roger Lemaitre, P.Eng., P.Geo. during this investigation. The target areas demonstrate geological and structural settings similar to those at Rabbit Lake Pit, McArthur River, Millennium, Eagle Point and West Bear deposits. Much of the previous work in this area was focused on exploring for traditional unconformity type and/or thrust fault-related uranium deposits and was carried out prior to the discovery of the McArthur River and Millennium deposits. Of these seventeen targets, two are relevant to the Lampin Lake Project, which was covered in the survey: the Shamus and Shamus North.
The Shamus area is located along the south side of the Lampin Lake Project (see map figure 3.51 below) and is related to the aforementioned Q12-A Zone. The Telephone Fault in this area straddles a contact between Unit 1 McClean Dome granitoid and Unit 2 pelite/semi-pelite. The Lampin Lake Project covers much of the western extent of the McClean Dome. Drilling in this area has locally intersected large pegmatite bodies showing evidence of extensive brecciation and widespread bleaching (ie: SHA-34). Abundant pegmatite-hosted hairline fractures in diamond drill holes with black minerals coatings returned probe peaks up to 9355 cps. The brecciation might be related to a prominent north-south magnetic feature that transects this area. Displacement along this part of the Telephone Fault is minimal and though graphitic gouges and fracture zones were observed, alteration and radioactivity were largely insignificant. Instead the uranium mineralization in the Shamus area is found in micro-fractures of intensely brecciated, clay-altered and bleached pegmatite some 100 to 200 metres southeast of the unconformity expression of the Telephone Fault. This is analogous to the situation at the Rabbit Lake Pit where extensive alteration and uranium mineralization occurs well southeast of the Rabbit Lake Fault at the location of a north-south crosscutting structure. The Shamus area is therefore an attractive area to test for Rabbit Lake style uranium mineralization.
Shamus North, located at the northern extent of the Lampin Lake Project, consists of a Unit 2 pelitic to semi-pelitic assemblage that is overthrusted by Unit 1 McClean Dome granitoid. The sedimentary package in this area roughly correlates with the package that hosts the McClean Lake Deposit some 10 kilometers to the northeast. Two widely spaced diamond drill holes, which are not on the Lampin Lake Project, were drilled in 1997 to test the south extension of the Q9 conductor. In both cases, a predominantly granitic package was intersected that failed to adequately explain the targeted conductor. A maximum probe peak of 364cps was obtained from SN-02 in what was logged as a weak redox zone. Similar to the Millennium Deposit, the Archean granitoids overlie the younger pelitic package in the Shamus North area. The two drill holes did not explain the conductor, yet it is encouraging that redox-type mineralizing processes were observed. Given that both holes intersected predominantly granitic packages, it is possible that neither hole appropriately tested the favourable sedimentary package, either by not having been collared far enough west or by not having been drilled deep enough to pass through the McClean Dome. The same two north-south magnetic lineaments potentially responsible for extensive brecciation in the Shamus area also transect this region. The Shamus North area may host potential for deeper basement-hosted mineralization similar to that at the Millennium Deposit.