NexGen Drills Intensive Radioactivity at Arrow - Rapid Expansion in the A2 and A3 High Grade Shears

 

VANCOUVER, July 16, 2015 /CNW/ - NexGen Energy Ltd. (TSX-V: NXE) ("NexGen" or the "Company") is pleased to announce the first set of results from our 25,000m summer 2015 drilling program on our 100% owned Rook I property, Athabasca Basin, Saskatchewan.

The program is off to a remarkable start with substantial step outs up-plunge and shallower than holes AR-15-41 and -44b. Results in this news release have returned substantial mineralization being intersected in the A2 and A3 high grade shears, particularly within the core of the A2 shear up plunge from AR-15-44b, which is characterized by the presence of very dense massive pitchblende.

Highlights:

Arrow - Southwest Extension

  • AR-15-49c2 has successfully extended the high grade mineralization intersected in AR-15-44b (56.5 m at 11.55% U3O8, see news release dated June 15, 2015) up-plunge to the northeast in the A2 shear by 41 m. Hole AR-15-49c2 intersected 73.5 m total composite mineralization including 23.05 m off-scale radioactivity (>10,000 to >61,000 cps) in the A2 shear, and 55.0 m total composite mineralization in the A3 shear all within a 475.0 m section (402.5 to 877.5 m). High grade mineralization in the A2 shear was observed as very dense accumulations of massive pitchblende. The strength of radioactivity encountered in the A2 shear with AR-15-49c2 is comparable to AR-15-44b, and is shown below:

Total composite mineralization =

73.50 m

Total offscale (>10,000 cps)* =

15.70 m

Total offscale (>30,000 cps)* =

5.20 m

Total offscale (>61,000 cps)* =

2.15 m

* minimum radioactivity using
RS-125 gamma spectrometer

  • AR-15-48c1 intersected 61.0 m total composite mineralization including 5.8 m of off-scale radioactivity in the A2 shear, and 57.65 m total composite mineralization including 7.8 m of off-scale radioactivity in the A3 shear all within a 346.5 m section (409.5 to 756.0 m). In the A2 shear this intercept is approximately 86 m shallower and to the southwest from AR-15-44b (56.5 m at 11.55% U3O8).

 Arrow – Northeast Extension

  • AR-15-50 has successfully increased the strike length of the Arrow zone by 35 m to the northeast; A total composite mineralization of 37.5 m including 0.20 m of off-scale radioactivity (>10,000 to 12,000 cps) was intersected within a 278.0 m section (502.0 to 780.0 m),
  • The Arrow zone now covers an area of 550 x 215 m with the vertical extent of mineralization commencing from 100 to 920 m, and it remains open in all directions and at depth (a 90 second 3D video of Arrow generated from Leapfrog is available for viewing on the Company website);
  • Five rigs continue to turn at Rook I as part of the 25,0000 m, $9 Million summer drill program which commenced June 8, 2015;

Drill hole locations, and the A2 and A3 long sections are shown in Figures 1 to 3, and Table 1 has a summary of the mineralized intervals.  Photos 1 through 4 show the intense and robust nature of uranium mineralization encountered in drill hole AR-15-49c2.

Garrett Ainsworth, NexGen's Vice-President, Exploration and Development, commented "Drilling in the A2 and A3 cores continues to impress us with the degree of strong, very dense mineralization encountered over wide intervals.  Our directional drilling program with TECH Directional became fully operational on June 26th and has quickly proven to be an optimal technology in efficiently testing the A2 and A3 high grade cores with exceptional pierce point accuracy, resulting in saved time and costs at Arrow. With these early summer results, we are very much looking forward to future drilling and further testing of both the southwest and northeast strikeextensions of Arrow."  

Leigh Curyer, Chief Executive Officer commented, "The 2015 summer drilling campaign is off to a great start in rapidly developing the Arrow zone. We are very confident in our drilling philosophy of rigorously testing Arrow. To date, it has continually proven to deliver when tested with large step outs. This point is highlighted in these latest holes which represent significant step outs up plunge, to the southwest and to the northeast and have all delivered intensive mineralization. "

Table 1: Arrow Zone Drill Hole Data




Drill Hole

Athabasca Group -
Basement
Unconformity Depth
(m)

Handheld Scintillometer Results (RS-120)  

Hole ID

Azimuth

Dip

Total
Depth
(m)

From (m)

To (m)

Width (m)

CPS Range

AR-15-46

140

-75

741.00

93.00

267.00

267.50

0.50

<500 -  950






273.00

287.50

14.50

<500 -  16000






349.00

352.50

3.50

<500 -  2000






395.50

413.50

18.00

<500 -  31000

AR-15-47

140

-75

768.00

93.60

308.00

312.50

4.50

<500 -  3100






316.00

318.50

2.50

<500 -  950






321.00

325.50

4.50

<500 -  1550






328.50

332.00

3.50

<500 -  890






335.00

336.50

1.50

<500 -  2200






339.50

340.50

1.00

<500 -  1500






350.00

351.00

1.00

<500 -  2300






375.00

375.50

0.50

<500 -  750






489.50

490.50

1.00

<500 -  5000

AR-15-48c1

146

-73.5

768.00

110.20

409.50

460.00

50.50

<500 -  44000






463.50

469.50

6.00

<500 -  1100






477.00

481.50

4.50

<500 -  2600






498.50

499.00

0.50

<500 -  600






504.00

505.00

1.00

<500 -  1500






520.50

521.00

0.50

<500 -  1800






548.50

549.00

0.50

<500 -  790






556.50

557.00

0.50

<500 -  1500






561.00

561.50

0.50

<500 -  1400






569.50

570.00

0.50

<500 -  1300






580.50

582.00

1.50

<500 -  750






585.50

586.50

1.00

<500 -  1700






589.00

590.00

1.00

<500 -  6000






595.50

619.50

24.00

<500 -  61000






626.80

629.00

2.20

<500 -  29000






637.00

639.00

2.00

<500 -  9500






642.00

642.60

0.60

<500 -  19000






649.00

654.00

5.00

<500 -  12000






658.00

659.50

1.50

<500 -  5500






662.00

669.00

7.00

<500 -  3000






675.00

684.00

9.00

<500 -  30000






700.15

701.00

0.85

<500 -  55350






713.50

719.00

5.50

<500 -  30500






755.50

756.00

0.50

<500 -  5150

AR-15-49c1

137

-73.6

504.00

110.00

399.00

399.50

0.50

<500 -  750






402.00

408.00

6.00

<500 -  2000






412.50

417.00

4.50

<500 -  2500






419.50

421.00

1.50

<500 -  850






423.50

425.00

1.50

<500 -  650






435.00

435.50

0.50

<500 -  700






447.00

454.00

7.00

<500 -  2100






457.00

457.50

0.50

<500 -  700






460.00

466.00

6.00

<500 -  950






471.00

472.00

1.00

<500 -  1200






479.50

484.50

5.00

<500 -  1600






488.00

488.50

0.50

<500 -  660






492.00

493.00

1.00

<500 -  605

AR-15-49c2

137

-73.6

901.00

110.00

403.50

404.00

0.50

<500 -  800






427.50

475.50

48.00

<500 -  61000






478.50

494.50

16.00

<500 -  45000






501.50

510.50

9.00

<500 -  2200






534.00

534.50

0.50

3000 -  3400






570.00

573.00

3.00

<500 -  2500






631.50

634.00

2.50

<500 -  2000






639.00

648.50

9.50

<500 -  1100






652.00

653.00

1.00

<500 -  1200






659.00

663.50

4.50

<500 -  4000






667.00

676.50

9.50

<500 -  3100






688.50

689.00

0.50

<500 -  800






714.00

717.50

3.50

<500 -  2200






722.00

731.00

9.00

<500 -  5500






740.00

743.50

3.50

<500 -  700






747.50

753.00

5.50

<500 -  5600






756.00

762.00

6.00

<500 -  4300






776.00

776.50

0.50

<500 -  500






780.50

781.00

0.50

<500 -  7500






792.50

793.00

0.50

<500 -  800






797.50

798.00

0.50

<500 -  1200






805.50

806.00

0.50

<500 -  4700






812.50

813.50

1.00

<500 -  8500






818.00

818.50

0.50

<500 -  600






827.50

829.50

2.00

<500 -  18000






833.00

834.00

1.00

<500 -  15000






849.50

850.00

0.50

<500 -  1500






876.50

877.50

1.00

<500 -  1500

AR-15-50

140

-75

855.85

93.60

502.00

503.00

1.00

<500 -  1700






702.50

704.50

2.00

<500 -  1500






725.00

744.00

19.00

<500 -  12000






750.50

751.00

0.50

<500 -  650






753.50

759.50

6.00

<500 -  3100






771.50

780.50

9.00

<500 -  2700

Parameters:

  • Maximum internal dilution 2.00 m downhole
  • All depths and intervals are meters downhole
  • "Anomalous" means >500 cps (counts per second) total count gamma readings by gamma scintillometer type RS-120
  • "Off-scale" means >10,000 cps (counts per second) total count gamma readings by gamma scintillometer type RS-120
  • Where "Min cps" is <500 cps, this refers to local low radiometric zones within the overall radioactive interval

Natural gamma radiation in drill core reported in this news release was measured in counts per second (cps) using a Radiation Solutions Inc. RS-120 gamma-ray scintillometer. The reader is cautioned that total count gamma readings may not be directly or uniformly related to uranium grades of the rock sample measured; they should be used only as a preliminary indication of the presence of radioactive minerals. All intersections are downhole. Core interval measurements and true thicknesses are yet to be determined.

Split core samples will be taken systematically, and intervals will be submitted to SRC Geoanalytical Laboratories (an SCC ISO/IEC 17025: 2005 Accredited Facility) of Saskatoon for analysis. All samples sent to SRC will be analyzed using ICP-MS for trace elements on the partial and total digestions, ICP-OES for major and minor elements on the total digestion, and fusion solution of boron by ICP-OES. Mineralized samples are analyzed for U3O8 by ICP-OES and select samples for gold by fire assay. Assay results will be released when received.

ARROW ZONE DRILLING

Southwest Extension

AR-15-48c1

Hole AR-15-48c1 was a directional drill hole collared at an angled orientation (-73.5° dip) to the southeast (146° azimuth). It was designed to test the A2 shear as a 40 m southwest step-out from AR-15-41 (2.31% U3O8 over 57.0 m in the A2 shear) and the A3 shear as a 55 m up-dip and southwest step-out from AR-14-41 (4.30% U3O8 over 20.5 m in the A3 shear). Directional drilling was initiated at 151 m. The A2 and A3 shears were intersected at dips of -64° and -69° respectively.  In the A2 shear this intercept is approximately 86 m shallower and to the southwest from AR-15-44b (56.5 m at 11.55% U3O8).

The hole intersected heavily bleached Athabasca Group sandstones between 97.9 m and the unconformity at 110.2 m. Basement lithologies consisted largely of semipelitic gneiss to granofel, and relatively narrow intervals of pelitic gneiss and mylonite (the A2 and A3 shears). The hole successfully intersected widespread weakly to strongly anomalous radioactivity within the A2 and A3 shears that was associated with semi-massive to massive veins, worm rock style, chemical solution fronts, stringers, blebs and flecks of pitchblende. A total composite mineralization of 126.65 m including 13.75 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 346.5 m section (409.5 to 756.0 m) before the hole was terminated at 768.0 m.

AR-15-49c1

Hole AR-15-49c1 was a directional drill hole collared at an angled orientation (-74° dip) to the southeast (137° azimuth). It was designed to test the A2 shear as a 40 m up-dip step-out from AR-15-41 (2.31% U3O8 over 57.0 m). Directional drilling was initiated at 181 m and the A2 shear was intersected at a dip of -64°.

The hole intersected desilicified and bleached Athabasca Group sandstones between 97.1 m and the unconformity at 110.0 m. Basement lithologies consisted largely of semipelitic gneiss to granofel, and relatively narrow intervals of pelitic gneiss and mylonite (the A2 shear). The hole encountered weakly to moderately anomalous radioactivity in the A2 shear. A total composite mineralization of 35.5 m was intersected within a 93.5 m section (399.0 to 492.5 m) before the hole was terminated at 504.0 m. The hole terminated immediately after the A2 shear to avoid twinning a hole already planned for the A3 shear.

AR-15-49c2

Hole AR-15-49c2 was a directional drill hole that departed from pilot hole AR-15-49c1 at a depth of 188.0 m. It tested the A2 shear 40 m up-plunge from AR-15-44b (11.55% U3O8 over 56.5 m) and the A3 shear 45 m down-dip of AR-15-41 (4.30% U3O8 over 20.5 m). Directional drilling was initiated at 324.0 m. The A2 and A3 shears were intersected at dips of -69.5° and -72° respectively.

Since this hole departed the pilot hole below the unconformity, no Athabasca Group sandstones were intersected. Basement lithologies consisted largely of semipelitic gneiss to granofel, and relatively narrow intervals of pelitic gneiss and mylonite (the A2 and A3 shears). Extensive uranium mineralization was intersected in the A2 shear that included dense accumulations of massive pitchblende along with semi-massive veins, worm rock-style, chemical solution fronts, stringers, blebs, and flecks of pitchblende and coffinite. Intermittent uranium mineralization was encountered in the A3 shear that consisted of occasional disseminations and fracture hosted pitchblende. A total composite mineralization of 140.5 m including 23.25 m of off-scale radioactivity was intersected within a 475.0 m section (402.5 to 877.5 m) before the hole was terminated at 901.0 m. The hole has successfully extended the high grade mineralization first intersected in AR-15-44b up-plunge by 41 m.  With directional drilling, hole AR-15-49c2 drilled across the sub-vertical A2 shear with an average dip of -69.5°, which represents an estimated true thickness of 25.7 m

Northeast Extension

AR-15-46

Hole AR-15-46 was drilled at an angled orientation (-75° dip) to the southeast (140° azimuth). It was designed to test the A2 shear as a 50 m down-plunge step-out from AR-14-05 (1.04% U3O8 over 29.0 m).

The hole intersected heavily bleached and desilicified Athabasca Group sandstones between 78.0 m and the unconformity at 93.0 m. Basement lithologies consisted largely of semipelitic gneiss to granofel, and relatively narrow intervals of pelitic gneiss and mylonite (the A2 and A3 shears). The hole successfully intersected mineralization in the A2 shear that was associated with visible vein hosted and disseminated pitchblende. A total composite mineralization of 36.5 m including 1.6 m of off-scale radioactivity (>10,000 to 31,000 cps) was intersected within a 146.5 m section (267.0 to 413.5 m) before the hole was terminated at 741.0 m.

AR-15-47

Hole AR-15-47 was drilled at an angled orientation (-75° dip) to the southeast (140° azimuth). It was designed to test the A2 shear as a 165 m up-dip step-out from AR-15-40b (0.99% U3O8 over 11.5 m).

The hole intersected heavily desilicified and bleached Athabasca Group sandstones between 81.0 m and the unconformity at 93.6 m. Basement lithologies consisted largely of semipelitic gneiss to granofel, and relatively narrow intervals of pelitic gneiss and mylonite (the A2 and A3 shears). The hole encountered weakly to moderately anomalous radioactivity in the A2 and A3 shears. A total composite mineralization of 20.0 m was intersected within a 182.5 m section (308.0 to 490.5 m) before the hole was terminated at 768.0 m.

AR-15-50

Hole AR-15-50 was drilled at an angled orientation (-75° dip) to the southeast (140° azimuth). It was designed to test the A2 shear as a 50 m up-plunge step-out from AR-15-40b (0.99% U3O8 over 11.5 m). However, the hole deviated downwards and pierced the A2 approximately 70 m down-dip and to the northeast of AR-15-40b.

The hole intersected heavily bleached and desilicified Athabasca Group sandstones between 72.0 m and the unconformity at 93.7m. Basement lithologies consisted largely of semipelitic gneiss to granofel, and relatively narrow intervals of pelitic gneiss and mylonite (the A2 and A3 shears). The hole encountered weakly to strongly anomalous radioactivity in the A2 and A3 shears. A total composite mineralization of 37.5 m including 0.20 m of off-scale radioactivity (>10,000 to 12,000 cps) was intersected within a 278.0 m section (502.0 to 780.0 m) before the hole was terminated at 855.85 m. AR-15-50 has successfully increased the strike length of the Arrow zone to the northeast by 35 m, which increases the strike length of Arrow from 515 to 550 m.

About NexGen

NexGen is a British Columbia corporation with a focus on the acquisition, exploration and development of Canadian uranium projects. NexGen has a highly experienced team of uranium industry professionals with a successful track record in the discovery of world class uranium deposits and in developing projects through discovery to production.

NexGen owns a portfolio of highly prospective uranium exploration assets in the Athabasca Basin, Saskatchewan, Canada, including a 100% interest in Rook I, location of the Arrow Discovery in February 2014 and Bow Discovery in March 2015

The technical information in this news release has been prepared in accordance with the Canadian regulatory requirements set out in National Instrument 43-101 and reviewed on behalf of NexGen Energy Ltd., by Garrett Ainsworth, P.Geo., Vice President – Exploration & Development, a qualified person.

Leigh Curyer,
Chief Executive Officer
NexGen Energy Ltd.
+1 604 428 4112
lcuryer@nexgenenergy.ca
www.nexgenenergy.ca

The TSXV has neither approved nor disapproved the contents of this press release. Neither the TSXV nor its Regulation Services Provider (as that term is defined in the policies of the TSXV) accepts responsibility for the adequacy or accuracy of this release.

Forward-Looking Information

This news release contains "forward-looking information" within the meaning of applicable Canadian securities laws. Generally, but not always, forward looking information is identifiable by the use of words such as "will" and planned" and similar expressions. Forward-looking information is based on the then current expectations, beliefs, assumptions, estimates and forecasts about the Company's business and the industry and markets in which it operates.  Such information is not a guarantee of future performance and undue reliance should not be placed on forward-looking information. Assumptions and factors underlying the Company's expectations regarding forward-looking information contained herein include, among others: that general business and economic conditions will not change in a material adverse manner; that financing will be available if and when needed on reasonable terms; that the Company's current exploration activities can be achieved and that its other corporate activities will proceed as expected; that third party contractors, equipment and supplies and governmental and other approvals required to conduct the Company's planned exploration activities will be available on reasonable terms and in a timely manner.

Although the assumptions made by the Company in providing forward looking information are considered reasonable by management at the time the forward-looking information is given, there can be no assurance that such assumptions will prove to be accurate. Forward-looking information also involves known and unknown risks and uncertainties and other factors, which may cause actual events or results in future periods to differ materially from any projections of future events or results expressed or implied by such forward-looking information, including, among others: risks related to the availability of financing on commercially reasonable terms and the expected use of the proceeds; changes in the market; potential downturns in economic conditions; industry conditions; actual results of exploration activities being different than anticipated; changes in exploration programs based upon results of exploration; future prices of metal; availability of third party contractors; availability of equipment and supplies; failure of equipment to operate as anticipated; accidents, effects of weather and other natural phenomena and other risks associated with the mineral exploration industry; environmental risks; changes in laws and regulations; community relations; and delays in obtaining governmental or other approvals or financing. There can be no assurance that forward-looking information will prove to be accurate, as actual results and future events could differ materially from those anticipated, estimated or intended. NexGen undertakes no obligation to update or reissue forward-looking information as a result of new information or events except as required by applicable securities laws. The reader is cautioned not to place undue reliance on forward-looking information.

SOURCE NexGen Energy Ltd.

Image with caption: "Photo 1: AR-15-49c2 – Massive Pitchblende Mineralization at 468.8 m (CNW Group/NexGen Energy Ltd.)". Image available at: http://photos.newswire.ca/images/download/20150716_C6388_PHOTO_EN_447280.jpg

Image with caption: "Figure 1: Arrow Zone Drill Hole Locations (CNW Group/NexGen Energy Ltd.)". Image available at: http://photos.newswire.ca/images/download/20150716_C6388_PHOTO_EN_447288.jpg

Image with caption: "Figure 2: A2 Mineralized Shear Long Section (CNW Group/NexGen Energy Ltd.)". Image available at: http://photos.newswire.ca/images/download/20150716_C6388_PHOTO_EN_447290.jpg

Image with caption: "Figure 3: A3 Mineralized Shear Long Section (CNW Group/NexGen Energy Ltd.)". Image available at: http://photos.newswire.ca/images/download/20150716_C6388_PHOTO_EN_447292.jpg

Image with caption: "Photo 2: AR-15-49c2 – Mineralization from 437.9 to 450.9 m (CNW Group/NexGen Energy Ltd.)". Image available at: http://photos.newswire.ca/images/download/20150716_C6388_PHOTO_EN_447282.jpg

Image with caption: "Photo 3: AR-15-49c2 – Mineralization from 450.9 to 468.3 m (CNW Group/NexGen Energy Ltd.)". Image available at: http://photos.newswire.ca/images/download/20150716_C6388_PHOTO_EN_447284.jpg

Image with caption: "Photo 4: AR-15-49c2 – Mineralization from 468.3 to 486.0 m (CNW Group/NexGen Energy Ltd.)". Image available at: http://photos.newswire.ca/images/download/20150716_C6388_PHOTO_EN_447286.jpg

For further information: Kin Communications, Tel: 604 684 6730, Toll free 1 866 684 6730, Email: nxe@kincommunications.com, Website: http://www.nexgenenergy.ca

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