NexGen Energy Expands A2 and A3 Shear Zones at the Arrow Zone, Rook I

- March 23rd, 2015

NexGen Energy Ltd. (TSXV:NXE) announced that high grade cores within the A2 and A3 zone have been significantly expanded by angled drill holes AR-15-39w1 and AR-15-41. The intersection of mineralization in the A2 and A3 shears show true widths of approximately 27.5 m and 78.6 m, respectively. According to VP for Exploration and Development, Garrett Ainsworth, “The high grade sections of the A2 and A3 shears are taking shape beautifully into what is heading towards a world class uranium asset in the southwest Athabasca Basin. Initial testing of the A3 shear with drill holes AR-15-39, -39w1, and -41 shows A3 is significantly larger in size than A2 and just as mineralized.”

NexGen Energy Ltd. (TSXV:NXE) announced that high grade cores within the A2 and A3 zone have been significantly expanded by angled drill holes AR-15-39w1 and AR-15-41. The intersection of mineralization in the A2 and A3 shears show true widths of approximately 27.5 m and 78.6 m, respectively. According to VP for Exploration and Development, Garrett Ainsworth, “The high grade sections of the A2 and A3 shears are taking shape beautifully into what is heading towards a world class uranium asset in the southwest Athabasca Basin. Initial testing of the A3 shear with drill holes AR-15-39, -39w1, and -41 shows A3 is significantly larger in size than A2 and just as mineralized.”

As quoted in the press release:

The high grade cores within A2 and A3 have been significantly expanded by angled drill holes AR-15-39w1 (wedged hole) and AR-15-41. Angled drill hole AR-15-40b has intersected off-scale (>10,000 to 50,000 cps) radioactivity on the northeast edge of the Arrow zone, which is approximately 100 m northeast from off-scale radioactivity in AR-14-05 (29.0 m at 1.04% U3O8).

As previously mentioned in the February 24th, 2015 news release, internal nomenclature for the Arrow zone has been developed, and is based on the three prominent northeast to southwest trending structures that are associated with mineralization at Arrow. The A1 (northernmost) to A3 (southernmost) mineralized shears are shown in Figure 1, and have been designated to assist with better describing the multiple high grade sections within the Arrow zone.

Highlights:

  • Angled drill hole AR-15-41 intersected 205.20 m total composite mineralization including 24.52 m off-scale radioactivity (>10,000 to >61,000 cps) within a 439.0 m section (384.5 to 823.5 m). Mineralization intersected in the A2 and A3 shears show true widths of approximately 27.5 m and 78.6 m, respectively;
  • Angled drill hole AR-15-39w1 intersected 124.5 m total composite mineralization including 8.35 m off-scale radioactivity (>10,000 to 53,000 cps) within a 514.5 m section (438.0 to 952.5 m), which has extended mineralization at Arrow to vertical depths ranging from 100 to 905 m. Mineralization intersected in the A2 and A3 shears show true widths of approximately 22.1 m and 61.5 m, respectively;
  • Angled drill hole AR-15-40b intersected 15.0 m total composite mineralization including 1.3 m off-scale radioactivity (>10,000 to 50,000 cps) within a 321.5 m section (373.0 to 694.5 m), which delineates Arrow with off-scale radioactivity at its defined northeastern limit;
  • The high grade core of the A2 shear is thus far defined by an 88 m strike length, 340 m vertical extent, and true widths ranging from approximately 11.0 to 27.5 m.
  • The high grade core of the A3 shear is thus far defined by a 73 m strike length, 420 m vertical extent, and true widths ranging from approximately 30.0 to 78.6 m.
  • The Arrow zone is currently defined by an area of 515 x 215 m with the vertical extent of mineralization commencing from 100 to 905 m, and it remains open in all directions and at depth.
  • 40 of 42 drill holes completed at Arrow to date have intersected uranium mineralization (as defined by uranium assay or the presence of >500 cps radioactivity using an RS-125 gamma spectrometer).
  • A fourth drill rig was mobilized during the month onto the Rook I property.

Garrett Ainsworth, NexGen’s Vice-President, Exploration and Development, commented “The high grade sections of the A2 and A3 shears are taking shape beautifully into what is heading towards a world class uranium asset in the southwest Athabasca Basin. Initial testing of the A3 shear with drill holes AR-15-39, -39w1, and -41 shows A3 is significantly larger in size than A2 and just as mineralized. This coupled with the successful strike of off-scale radioactivity with AR-15-40b at the current northeast edge of Arrow, strongly suggests that Arrow will continue to grow to the northeast.”

Leigh Curyer, Chief Executive Officer commented, “The team’s confidence in drilling large step outs has well and truly been rewarded in consistently hitting wide zones of mineralization with high grade. The dimensions of Arrow are expanding significantly with every hole, whilst gaining a solid understanding on the high grade core zones within the project. The rate of development is unprecedented and confidently expected to continue as we develop Arrow and the regional targets on the Rook I property. I would like to take the opportunity on behalf of the Company to acknowledge the outstanding work of our drill contractor, Aggressive Drilling. Aggressive have proven to be amongst the elite drill contractors based on their technical expertise to handle challenging conditions, and setting wedges seamlessly whilst being committed to high standards in health, safety, and environment during our ongoing winter campaign.”

At Arrow, a total of 8,206.9 m has now been reported on from the winter 2015 drill program.

Click here to read the NexGen Energy Ltd. (TSXV:NXE) press release
Click here to see the NexGen Energy Ltd. (TSXV:NXE) profile.

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