NexGen Drills Off-Scale in all Six New Holes within the 210 m step out from AR-15-44b and Expands Summer Program to 30,000 m

VANCOUVER, Aug. 26, 2015 /CNW/ - NexGen Energy Ltd. (TSX-V: NXE) ("NexGen" or the "Company") is pleased to announce radioactivity  results from our on-going summer 2015 drilling program on our 100% owned Rook I property, Athabasca Basin, Saskatchewan.  Additionally, the Company announces it has expanded the summer program by 5,000 m to 30,000 m in order to drill test the newly discovered 210 meter southwest extension of Arrow for inclusion in a maiden NI 43-101 resource estimate in first half 2016.

All six drill holes reported from the Arrow zone in this news release have returned significant visible mineralization and off-scale radioactivity. Importantly, step-out drilling in AR-15-54c1 has intersected substantial high grade mineralization in the A2 shear. Furthermore, step-out drilling in AR-15-56c1 has intersected widespread high grade mineralization in the A3 shear. The Arrow zone remains open in all directions and the Company's focus for the remainder of the summer season is defining the extensions of high-grade mineralization in both shear zones.

Highlights:

Arrow – A2 and A3 Extensions

  • AR-15-54c1 (87 m step-out up-dip and southwest from AR-15-44b) intersected 68.5 m of total composite mineralization including 10.35 m of off-scale radioactivity (>10,000 to >61,000 cps) within a 302.5 m section (437.5 to 740.0 m) marked by significant concentrations of massive pitchblende in the A2 shear.
  • AR-15-56c1 (81 m step-out up-dip and southwest from AR-15-44b) intersected 125.0 m of total composite mineralization including 10.95 m of off-scale radioactivity (>10,000 to >61,000 cps) within a 385.5 m section (550.0 to 935.5 m) highlighted by extensive and locally strong pitchblende mineralization in the A3 shear.
  • AR-15-54c2 (105 m step-out up-plunge southwest from AR-15-44b) intersected 114.0 m of total composite mineralization including 5.85 m off-scale radioactivity (>10,000 to 53,000) within a 307.0 m section (521.0 to 828.0 m) highlighted by extensive and locally strong pitchblende mineralization in the A3 shear.
  • AR-15-53c3 (155 m step-out down-dip from AR-15-44b) intersected 59.0 m of total composite mineralization including 5.5 m of off-scale radioactivity (>10,000 to >61,000 cps) within a 342.5 m section (549.5 to 892.0 m) marked by local concentrations of massive pitchblende in the A2 shear.

Arrow – A2 and A3 Core Delineation

  • AR-15-53c2 (91 m below AR-15-44b) intersected 61.5 m of total composite mineralization including 6.55 m of off-scale radioactivity (>10,000 to >61,000 cps) within a 215.5 m section (439.5 to 655.0 m) marked by local concentrations of massive pitchblende in the A2 shear.
  • The Arrow zone now covers an area of 645 x 215 m with a vertical extent of mineralization commencing from 100 to 920 m, and it remains open in all directions and at depth. Mineralization is hosted entirely in the basement (a 90 second 3D video of Arrow generated from Leapfrog is available for viewing on the Company website).
  • Due to the step out success, the drill program has been expanded to 30,000 m with all five rigs now focused on Arrow in order to incorporate the 210 m extension to the southwest from AR-15-44b into an initial resource estimate scheduled for the first half of 2016.

Garrett Ainsworth, NexGen's Vice-President, Exploration and Development, commented: "These latest results from our Arrow zone continue to impress us with four of the six reported drill holes encountering >61,000 cps radioactivity associated with dense accumulations of massive pitchblende. Of note, hole AR-15-54c1 drilled at a dip of -62° through the sub-vertical A2 high grade core zone, and returned 42 m of mineralization including 9.4 m of off-scale in the A2 shear demonstrating the high grade cores within Arrow continue to prove up well."  

Leigh Curyer, Chief Executive Officer commented: "The expansion of the summer drilling program to 30,000 m is a function of the successful discovery of broad zones of mineralization 50, 100 and 210 m southwest from AR-15-44b. Additional drilling is now required to include this new southwest extension in our maiden resource estimate which we anticipate within the first half of 2016. Also, the Rook I camp infrastructure is undergoing significant expansion in order to accommodate the expanded program, including additional core storage and personnel. This is a very exciting time for the team and our shareholders."

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.

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-15-53c2

141

-77

684.00

114.00

439.50

442.00

2.50

<500 -  1200






549.00

549.50

0.50

<500 -  900






563.50

567.50

4.00

<500 -  1550






570.50

572.50

2.00

<500 -  560






578.00

610.00

32.00

<500 -  >61000






613.50

614.00

0.50

<500 -  4100






616.50

619.00

2.50

<500 -  7200






623.00

628.00

5.00

<500 -  2800






642.50

655.00

12.50

<500 -  4200

AR-15-53c3

141

-77

936.00

114.00

549.50

550.00

0.50

<500 -  560






555.00

556.00

1.00

<500 -  680






588.50

589.00

0.50

<500 -  680






619.50

636.00

16.50

<500 - > 61000






639.00

640.50

1.50

<500 -  3700






644.00

645.00

1.00

<500 -  1750






651.00

657.00

6.00

<500 -  >61000






663.50

664.00

0.50

500 -  5500






676.50

685.50

9.00

<500 -  27500






772.00

774.50

2.50

<500 -  1700






777.50

778.50

1.00

<500 -  560






781.00

782.00

1.00

<500 -  4300






794.00

795.00

1.00

<500 -  1500






797.50

803.00

5.50

<500 -  2450






806.50

810.00

3.50

<500 -  13000






814.00

815.50

1.50

<500 -  2500






818.50

824.00

5.50

<500 -  9400






891.00

892.00

1.00

<500 -  570

AR-15-54c1

140

-76

816.00

109.00

437.50

438.00

0.50

<500 -  600






470.50

484.50

14.00

<500 -  19000






489.00

489.50

0.50

<500 -  590






493.00

514.50

21.50

<500 -  >61000






522.00

528.00

6.00

<500 -  700






615.00

622.50

7.50

<500 -  2500






625.00

626.00

1.00

<500 -  1100






629.00

636.50

7.50

<500 -  7000






639.50

640.00

0.50

500 -  2400






685.50

688.00

2.50

<500 -  1100






692.00

692.50

0.50

<500 -  13000






701.50

702.00

0.50

<500 -  1000






704.50

708.00

3.50

<500 -  7200






737.50

740.00

2.50

<500 -  33000

AR-15-54c2

140

-76

891.00

109.00

521.00

525.50

4.50

<500 -  3800






531.50

542.00

10.50

<500 -  20000






545.00

548.00

3.00

<500 -  800






557.50

559.00

1.50

<500 -  35000






564.00

565.50

1.50

<500 -  3400






592.50

599.00

6.50

<500 -  5300






602.50

603.00

0.50

<500 -  600






617.00

619.00

2.00

<500 -  2800






621.50

622.50

1.00

<500 -  1200






629.00

633.00

4.00

<500 -  46000






637.50

642.00

4.50

<500 -  3800






648.50

649.50

1.00

<500 -  550






655.00

664.00

9.00

<500 -  21000






670.50

685.50

15.00

<500 -  53000






688.00

698.00

10.00

<500 -  30000






700.50

708.50

8.00

<500 -  25000






718.00

720.00

2.00

<500 -  1800






725.00

725.50

0.50

<500 -  800






738.50

739.50

1.00

<500 -  3300






747.50

763.50

16.00

<500 -  6800






767.50

768.00

0.50

<500 -  1000






793.00

794.00

1.00

<500 -  800






801.50

802.00

0.50

<500 -  550






805.50

806.00

0.50

700 -  1800






810.50

817.50

7.00

<500 -  4000






825.50

828.00

2.50

<500 -  3500

AR-15-55

140

-75

924.00

103.60

550.00

552.00

2.00

<500 -  1700






556.50

557.00

0.50

<500 -  560






582.50

584.50

2.00

<500 -  12400






607.00

610.00

3.00

<500 -  6100






670.50

671.00

0.50

<500 -  550

AR-15-56c1

139

-76.5

996.00

110.40

550.00

551.50

1.50

<500 -  1500






555.00

558.00

3.00

<500 -  3000






560.50

569.00

8.50

<500 -  2500






580.50

588.00

7.50

<500 -  10000






594.00

598.50

4.50

<500 -  24000






602.50

605.00

2.50

<500 -  2000






619.00

619.50

0.50

<500 -  700






624.50

635.50

11.00

<500 -  16000






638.00

640.50

2.50

<500 -  2300






649.50

651.00

1.50

<500 -  6400






654.50

660.50

6.00

<500 -  >61000






663.50

664.50

1.00

<500 -  3000






667.50

668.50

1.00

<500 -  9700






685.50

686.00

0.50

<500 -  520






721.50

728.00

6.50

<500 -  >61000






748.50

752.00

3.50

<500 -  1800






755.00

756.00

1.00

<500 -  1000






761.00

761.50

0.50

<500 -  600






764.50

765.00

0.50

<500 -  800






770.50

779.00

8.50

<500 -  2600






781.50

794.50

13.00

<500 -  53000






797.00

797.50

0.50

<500 -  650






801.50

806.00

4.50

<500 -  1400






810.00

811.00

1.00

<500 -  2100






847.00

848.00

1.00

<500 -  1300






851.50

861.50

10.00

<500 -  34000






864.50

871.50

7.00

<500 -  15000






874.00

879.00

5.00

<500 -  12000






886.00

889.50

3.50

<500 -  6500






895.00

901.00

6.00

<500 -  21000






909.50

910.50

1.00

<500 -  1400






935.00

935.50

0.50

<500 -  1800

 

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

AR-15-53c2

Hole  AR-15-53c2 was  a  directional  drill hole  that  departed  from  pilot  hole  AR-15-53c1  at  a  depth  of 339.0 m. It tested the A2 shear 32 m up-dip from AR-15-39w1 (1.85% U3O8 over 26.0 m in the A2 shear). Directional drilling was initiated at 424.0 m and A2 shear was intersected at an inclination of -73°.

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 mylonite (the A2 shear). The hole successfully intersected widespread weakly to strongly anomalous radioactivity within the A2 shear 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 61.5 m including 6.55 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 215.5 m section (439.5 to 655.0 m). The hole was terminated immediately after the A2 shear at 684.0 m.

AR-15-53c3

Hole AR-15-53c3 was a directional hole that departed from pilot hole AR-15-53c2 at a depth of 425.0 m. It tested the A2 shear 33 m down-dip from AR-15-39 (2.82% U3O8 over 27.0 m in the A2 shear) and the A3 shear 42 m down-dip from AR-15-39 (2.27% U3O8 over 29.0 m in the A3 shear). Directional drilling was initiated at 472 m. The A2 and A3 shears were intersected at inclinations of -81° and -71°, respectively.

Since the 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). 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 59.0 m including 5.50 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 342.5 m section (549.5 to 892.0 m). In the A2 shear, 35.0 m of composite mineralization including 5.3 m of off-scale radioactivity was intersected. In the A3 shear, 11.5 m of composite mineralization including 0.2 m of off-scale radioactivity was intersected. The hole was terminated at 936.0 m and represents a 33 m step-out on the A2 shear.

AR-15-54c1

Hole AR-15-54c1 was a directional drill hole collared at an angled orientation (-76° dip) to the southeast (140° azimuth). It tested the A2 shear  57 m up-dip and southwest from AR-15-48c3 (12.45 m of off-scale radioactivity in the A2 shear; assays pending) and the A3 shear 65 m southwest from AR-15-48c1 (7.8 m of off-scale radioactivity in the A3 shear; assays pending). Directional drilling was initiated at 247 m. The A2 and A3 shears were intersected at dips of -62° and -61°, respectively.

The hole intersected bleached and locally heavily desilicified Athabasca Group sandstones between 96.0 m and the unconformity at 109.0 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 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. Mineralization was particularly intense in the A2 shear.  A total composite mineralization of 68.5 m including 10.35 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 302.5 m section (437.5 to 740.0 m). In the A2 shear, 42.0 m of composite mineralization including 9.4 m of off-scale radioactivity was intersected. In the A3 shear, 26.0 m of composite mineralization including 0.95 m of off-scale radioactivity was intersected. The hole was terminated at 816.0 m. It represents a 57 m step-out on the A2 shear and a 65 m step-out on the A3 shear.

AR-15-54c2

Hole AR-15-54c2 was a directional hole that departed from pilot hole AR-15-54c1 at a depth of 234 m. It tested the A2 shear 57 m down-plunge from AR-15-48c3 (12.45 m of off-scale radioactivity in the A2 shear; assays pending) and the A3 shear 30 m up-plunge from AR-15-51 (6.45 m of off-scale radioactivity in the A3 shear; assays pending). Directional drilling was initiated at 355 m. The A2 and A3 shears were both intersected at inclinations -67°.

Since the 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). The hole successfully intersected widespread weakly to strongly anomalous radioactivity within the A2 and A3 shears that was associated with semi-massive veins, worm rock style, chemical solution fronts, stringers, blebs and flecks of pitchblende. A total composite mineralization of 114.0 m including 5.85 m of off-scale radioactivity (>10,000 to 53,000 cps) was intersected within a 307.0 m section (521.0 to 828.0 m). In the A2 shear, 35.0 m of composite mineralization including 1.25 m of off-scale radioactivity was intersected. In the A3 shear, 73.0 m of composite mineralization including 4.6 m of off-scale radioactivity was intersected. The hole was terminated at 891.0m. It represents a 57 m step-out on the A2 shear and a 30 m step-out on the A3 shear. 

AR-15-55

Hole  AR-15-55  was  drilled  at  an  angled  orientation  (-75°  dip)  to  the  southeast  (140°  azimuth).  It was designed to test the A2 shear as a 45 m down-plunge step-out from AR-15-52 (1.05 m of off-scale radioactivity in the A2 shear; assays pending) and the A3 shear as a 60 m down-plunge step-out from AR-15-52 (2.95 m of off-scale radioactivity in the A3 shear; assays pending).

The hole intersected bleached Athabasca Group sandstones between 92.0 m and the unconformity at 103.6 m. Basement lithologies consisted largely of semi-pelitic gneiss to granofel, granodiorite and relatively  narrow  intervals  of  pelitic  gneiss  and  mylonite  (the  A1 through A3 shears). The hole successfully intersected weakly to locally strongly anomalous radioactivity on the A2 shear that was associated with fracture controlled and disseminated pitchblende mineralization. A total composite mineralization of 8.0 m including 0.2 m of off-scale radioactivity (>10,000 to 12,400 cps) was intersected within a 121.0 m section (550.0 to 671.0 m) before the hole was terminated at 924 m.

AR-15-56c1

Hole AR-15-56c1 was a directional hole collared at an angled orientation (-76.5° dip) to the southeast (139° azimuth). It tested the A2 shear 42 m down-plunge from AR-15-38 (0.90% U3O8 over 32.0 m in the A2 shear) and the A3 shear 51 m up-dip and southwest from AR-15-39w1 (0.72% U3O8 over 36.0 m in the A3 shear). Directional drilling was initiated at 277 m. The A2 and A3 shears were both intersected at inclinations of -74°.

The hole intersected bleached and locally heavily desilicified Athabasca Group sandstones between 97.8 m and the unconformity at 110.4 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 weakly to strongly anomalous radioactivity in 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 125.0 m including 10.95 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 385.5 m section (550.0 to 935.5 m). In the A2 shear, 49.0 m of composite mineralization including 2.6 m of off-scale radioactivity was intersected. In the A3 shear, 73.0 m of composite mineralization including 8.35 m of off-scale radioactivity was intersected. The hole was terminated at 996.0 m and represents 42 m step-out on the A2 shear and a 51 m step-out on the A3 shear.

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: "Figure 1: Arrow Zone Drill Hole Locations (CNW Group/NexGen Energy Ltd.)". Image available at: http://photos.newswire.ca/images/download/20150826_C8798_PHOTO_EN_484107.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/20150826_C8798_PHOTO_EN_484109.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/20150826_C8798_PHOTO_EN_484111.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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