TORONTO, May 24, 2018 /CNW/ – Denison Mines Corp. (“Denison” or the “Company”) (DML: TSX, DNN: NYSE American) is pleased to announce the Company’s summer 2018 exploration plans for its high-priority Athabasca Basin exploration pipeline projects located in northern Saskatchewan. View PDF Version.
Summer 2018 Drilling Program Highlights:
- Waterbury Lake Project – Summer drilling is expected to focus on additional step-out drilling at the Huskie zone of high-grade basement-hosted uranium mineralization, and testing of high-priority targets approximately 2.5 kilometres to the northeast, where the regionally interpreted Midwest structure is projected to intersect the geologically favourable Oban trend. The Oban trend has produced previous drill intercepts of uranium mineralization, but has not previously been tested at the interpreted intersection of the Midwest regional structure. The summer program is expected to include approximately 4,800 metres of diamond drilling in 12 holes, and to commence in late-July.
- Hook-Carter Project – The summer drilling program is designed as a continuation of the Company’s winter 2018 drilling program, which encountered hydrothermal alteration in both the sandstone and the basement lithologies associated with graphitic basement structures. Results from the winter program suggest that the mineralizing system associated with the Patterson Corridor continues on to the property. The summer program commenced recently and is expected to include 3,500 metres of diamond drilling in five to six drill holes designed to test high-priority geophysical targets on a
regional scale. - South Dufferin – High-priority drill targets have been identified through geochemical and geophysical surveying along the Virgin River Shear zone, approximately 25 kilometres south of Cameco Corp’s Centennial deposit. The summer diamond drilling program is expected to be of a reconnaissance nature and is planned to commence in June, with approximately 2,500 metres of diamond drilling in 16 to 20 holes.
David Cates, Denison’s President & CEO, commented, “In addition to Denison’s flagship Wheeler River project, the Company has one of the largest land positions in the prolific Athabasca Basin region. This extensive portfolio of projects provides a pipeline of high-potential exploration opportunities to generate new discoveries and build on theCompany’s significant high-grade uranium resource base. With over $35 million in cash and equivalents on the balance sheet at the end of the first quarter of 2018, the summer program is fully funded and provides investors with exposure to Company specific uranium exploration catalysts as our team continues with our disciplined-approach of testing high-priority targets, at Waterbury Lake, Hook-Carter and South Dufferin.”
A map of Denison’s Athabasca Basin properties is provided in Figure 1.
Denison Athabasca Property Map.
Waterbury Lake
Huskie Zone
The Huskie zone of high-grade basement-hosted uranium mineralization was discovered by Denison during the summer of 2017 and is located approximately 1.5 kilometres to the northeast of the property’s J Zone uranium deposit. To date, the completion of 23 drill holes on an approximate 50 x 50 metre spacing has allowed for the definition of mineralization over a strike length of approximately 250 metres and dip length of up to 170 metres. The individual lenses of mineralization vary in interpreted true thickness between approximately 2 and 7 metres. Highlight drill intersections include 9.1% U3O8 over 3.7 metres (including 16.8% U3O8 over 2.0 metres) in drill hole WAT17-446A (see Denison’s press release dated October 11, 2017) and 4.5% U3O8 over 6.0 metres (including 5.8% U3O8 over 4.5 metres) in drill hole WAT18-452 (see Denison’s press release dated April 25, 2018).
The mineralized lenses are interpreted to occur as parallel, stacked lenses, which are conformable to the foliation and fault planes within the east-west striking graphitic gneiss unit. The drilling to date suggests the grade, thickness, and number of lenses present is controlled by the presence of northeast striking faults which cross-cut the graphitic gneiss unit. The northeast striking faults identified at the Huskie zone are interpreted to be part of the regional Midwest structure.
The planned summer program includes step-out drilling both up-dip and down-dip of the known mineralization to test for high-grade extensions related to the northeast striking, cross-cutting faults.
Oban
Oban is an east-west striking geological trend located 2 kilometres to the north of the Huskie zone, which has shown considerable exploration potential from previous drilling campaigns. Results include the presence of faulted graphitic basement rocks, significantly structured and altered basal Athabasca sandstone, and mineralized sandstone intercepts of 0.079% U3O8over 4.8 metres in drill hole WAT14-406A and 0.050% U3O8 over 1.5 metres in drill hole WAT14-407. The trend remains under-explored with untested gaps in drilling coverage of up to 1.7 kilometres.
On the eastern side of the Waterbury Lake property, the intersection of the interpreted northeast striking regional Midwest structure with east-west striking graphite-bearing basement units appears to control the location of the J Zone/Roughrider deposits and the Huskie zone. Current interpretation of the Midwest structure suggests it cross-cuts the Oban trend in areas that have not yet been drill tested, which produces compelling targets for exploration. The planned summer program includes drilling to test these targets, particularly within the basement rocks.
Midwest Extension
Current interpretation suggests the Midwest structure, which hosts the Midwest Main and Midwest A deposits on the Midwest property (25.17% Denison owned), may extend onto the Waterbury Lake property to the southwest of the Midwest Main deposit. An initial DCIP resistivity survey is planned for late summer or fall to map the possible extension of the Midwest structure and define drill targets for future testing.
The Waterbury Lake property consists of multiple claims covering 40,256 hectares, and is located in the infrastructure rich eastern portion of the Athabasca Basin region in northern Saskatchewan. The property is jointly owned by Denison (64.22%) and Korea Waterbury Uranium Limited Partnership (“KWULP”) (35.78%) through the Waterbury Lake Uranium Limited Partnership (“WLULP”). KWULP consists of a consortium of investors in which Korea Hydro & Nuclear Power (“KHNP”) holds a majority position. KWULP has elected not to fund the 2018 exploration program and, as a result, will incur dilution of its ownership interest in the WLULP.
Hook-Carter
The Hook-Carter project is highlighted by 15 kilometres of strike potential along the prolific Patterson Corridor – host to the Arrow deposit (NexGen Energy Ltd.), Triple R deposit (Fission Uranium Corp.), and Spitfire discovery (Purepoint Uranium Group Inc., Cameco Corp., and Orano Canada Inc.), which occur within 8 to 20 kilometres of the property. The property is significantly underexplored compared to other properties along this trend, with only five historic drill holes located along the 15 kilometres of Patterson Corridor strike length. The property also covers significant portions of the Derkson and Carter Corridors, which provide additional priority target areas.
All four drill holes, completed during the inaugural winter 2018 drilling program, encountered hydrothermal alteration in both the sandstone and the basement lithologies associated with graphitic basement structures. These features are consistent with unconformity-related mineralizing systems in the Athabasca Basin and suggest that the mineralizing system within the Patterson Corridor continues onto the Hook-Carter property. Elevated radioactivity was noted in two holes, ranging up to 184 counts per second measured on a Mount Sopris 2GHF-1000 – Triple Gamma downhole probe. The summer drilling program, which commenced in mid-May, is expected to include 3,500 metres of diamond drilling in five to six drill holes designed to test high-priority geophysical targets on a regional scale.
The Hook-Carter property consists of 45 claims covering 20,522 hectares and is owned 80% by Denison and 20% by ALX Uranium Corp. (“ALX”). Denison has agreed to fund ALX’s share of the first CAD$12M in expenditures (see Denison’s Press Releases dated October 13 and November 7, 2016).
South Dufferin
The South Dufferin project is a 100% Denison owned property comprising 14,364 hectares in 6 claims and is located immediately south of the southern margin of the Athabasca Basin in northern Saskatchewan. The property covers the southern extension of the Virgin River Shear Zone, which hosts known high-grade uranium mineralization at Cameco Corp.’s Dufferin Lake zone approximately 13 kilometres to the north (highlight of 1.73% U3O8 over 6.5 metres) and Cameco Corp.’s Centennial deposit approximately 25 kilometres to the north (includes intersections up to 8.78% U3O8 over 33.9 metres). Exploration potential exists for basement-hosted uranium mineralization associated with the Dufferin Lake fault and parallel faults within the Virgin Lake Shear zone. Priority drill targets have been developed across the property from recent ground geochemical and geophysical surveying. The summer 2018 diamond drilling program is of a reconnaissance nature and is expected to include approximately 2,500 metres of drilling in 16 to 20 holes.
Qualified Persons
Dale Verran, MSc, P.Geo, Pr.Sci.Nat., Denison’s Vice President, Exploration, who is a Qualified Person in accordance with the requirements of NI 43-101, has reviewed and approved the technical information contained in this release.
About Denison
Denison is a uranium exploration and development company with interests focused in the Athabasca Basin region of northern Saskatchewan, Canada. In addition to its 63.3% owned Wheeler River project, which ranks as the largest undeveloped high-grade uranium project in the infrastructure rich eastern portion of the Athabasca Basin region, Denison’s Athabasca Basin exploration portfolio consists of numerous projects covering approximately 353,000 hectares. Denison’s interests in AthabascaBasin also include a 22.5% ownership interest in the McClean Lake joint venture (“MLJV”), which includes several uranium deposits and the McClean Lake uranium mill, which is currently processing ore from the Cigar Lake mine under a toll milling agreement, plus a 25.17% interest in the Midwest and Midwest A deposits, and a 64.22% interest in the J Zone deposit and Huskie discovery on the Waterbury Lake property. Each of Midwest, Midwest A, J Zone and Huskie are located within 20 kilometres of the McClean Lake mill.
Denison is also engaged in mine decommissioning and environmental services through its Denison Environmental Services division and is the manager of Uranium Participation Corp., a publicly traded company which invests in uranium oxide and uranium hexafluoride.
Source: Denison Mines Corp.
