NexGen Energy Ltd. - Scissor Drilling at Arrow Intersects Substantial Off-Scale in the Higher Grade A2 Sub-Zone and the A1 Shear

VANCOUVER, Sept. 6, 2016 /CNW/ - NexGen Energy Ltd. ("NexGen" or the "Company") (TSX:NXE, OTCQX:NXGEF) is pleased to report radioactivity results from eight holes from our on-going summer drilling program on our 100% owned, Rook I property, Athabasca Basin, Saskatchewan.

Drilling at the Arrow Deposit continues to intersect extensive off-scale radioactivity in the higher grade A2 sub-zone (the "Sub-Zone"). Highlighting this batch of results, scissor hole AR-16-98c2 which was drilled towards the northwest and collared at the southeast, intersected 85.0 m of total composite mineralization including dense accumulations of massive pitchblende largely outside the margin of the A2 High Grade Domain.  This hole intersected 10.05 m of off-scale radioactivity including 5.75 m of minimum-greater-than-61,000 cps radioactivity of which 4.5 m was continuous.

Additionally, holes AR-16-92c3 and -93c2 drilled significant intervals of massive to semi-massive pitchblende in the A2 shear.  These holes, and the others reported in this news release, are expected to provide for further definition of the A2 High Grade Domain.   

Furthermore, drilling in the new high grade zone within the A1 shear continues to return strong visible uranium mineralization where AR-16-98c1 intersected 44.5 m of total composite mineralization including 9.45 m of off-scale radioactivity making it the most strongly mineralized hole drilled into the A1 shear to date.

Highlights:

A2 Sub-Zone

  • Scissor hole AR-16-98c2 (70 m up-dip from AR-15-44b) intersected 85.0 m of total composite mineralization including 10.05 m of total composite off-scale radioactivity (>10,000 to >61,000 cps) within a 128.0 m section (414.0 to 542.0 m), and featured 5.75 m of minimum-greater-than-61,000 cps in the Sub-Zone, 4.5 m of which was continuous.
  • Scissor hole AR-16-93c2 (109 m up-dip and northeast from AR-15-44b) intersected 69.5 m of total composite mineralization including 11.15 m of total composite off-scale radioactivity (>10,000 to >61,000 cps) within a 98.0 m section (427.0 to 525.0 m) and featured 1.5 m of minimum-greater-than-61,000 cps in the Sub-Zone.
  • AR-16-92c3 (91 m down-dip and southwest from AR-15-44b) intersected 49.5 m of total composite mineralization including 10.8 m of total composite off-scale radioactivity (>10,000 to >61,000 cps) within a 109.0 m section (531.0 to 640.0 m), and featured 2.3 m of minimum-greater-than-61,000 cps in the Sub-Zone.

A1 Shear

  • Scissor hole AR-16-98c1 (16 m southwest of AR-16-84c1) intersected 44.5 m of total composite mineralization including 9.45 m of total composite off-scale radioactivity (>10,000 to >61,000 cps) within a 134.0 m section (570.5 to 704.5 m) in the A1 shear.

Table 1: Higher Grade A2 Sub-Zone Angled Drill Holes


2015

AR-15-
59c22

AR-15-
54c12

AR-15-
58c12

AR-15-
622

AR-15-
44b2

AR-15-
49c22

AR-15-
57c32

Total composite mineralization =

75.5m

42.0m

86.0m

143.0m

135.6m

73.5m

62.5m

Total Off-scale (>10,000 to 29,999 cps)3 =

11.4m

5.9m

14.3m

17.8m

30.3m

15.7m

4.4m

Total Off-scale (>30,000 to 60,999 cps)3 =

4.5m

3.0m

3.9m

10.6m

7.8m

5.2m

2.5m

Total Off-scale (>61,000 cps)3 =

1.0m

0.5m

2.0m

2.0m

1.5m

2.2m

1.8m

Continuous GT (Grade x Thickness) =

371

277

200 and
345

787

655

605

319

 


Winter 2016

AR-16-
81c32

AR-16-
76c42

AR-16-
76c12

AR-16-
76c32

AR-16-
63c12

AR-16-
63c32

AR-16-
86c12

AR-16-
74c12

AR-16-
63c22

AR-16-
91c22

AR-16-
64c32

AR-16-
64c22

AR-16-
64c12

AR-16-
72c22

AR-16-
78c12

AR-16-
78c42

Total composite mineralization =

48.5m

105.7m

73.5m

67.5m

55.5m

147.0m

90.0m

88.0m

138.0m

89.0m

102.0m

76.0m

74.0m

93.0m

64.0m

120.5m

Total Off-scale (>10,000 to 29,999 cps)3 =

5.2m

19.9m

14.8m

14.9m

6.9m

22.1m

8.8m

21.2m

17.1m

13.4m

18.8m

16.0m

10.3m

7.0m

11.6m

25.8m

Total Off-scale (>30,000 to 60,999 cps)3 =

4.0m

1.0m

2.8m

5.0m

0.5m

3.0m

2.3m

1.2m

9.9m

6.0m

2.5m

4.7m

3.7m

0.5m

3.0m

6.2m

Total Off-scale (>61,000 cps)3 =

2.5m

0.0m

5.3m

4.5m

0.0m

0.5m

2.0m

0.0m

13.9m

3.0m

0.0m

5.5m

0.0m

1.7m

2.5m

5.5m

Continuous GT (Grade x Thickness) =

395

142 and
63

762

761

203

274 and
124

394

160 and
35

638 and
604

514

172 and
92

541

338

156 and
45

485

660
and 88
and 67

 

Summer 2016

AR-16-
92c3

AR-16-
98c2

AR-16-
93c2

Total composite mineralization =

49.5m

85.0m

69.5m

Total Off-scale (>10,000 to 29,999 cps)3 =

7.1m

3.3m

8.15m

Total Off-scale (>30,000 to 60,999 cps)3 =

1.4m

1.0m

1.5m

Total Off-scale (>61,000 cps)3 =

2.3m

5.75m

1.5m

Continuous GT (Grade x Thickness) =

Assays
Pending

Assays
Pending

Assays
Pending


1 radioactivity results previously released

2 radioactivity and assays results previously released

3 minimum radioactivity using RS-120 gamma spectrometer




 

Activities & Financial

  • The land-based and basement hosted Arrow Deposit currently covers an area of 870 m by 300 m with a vertical extent of mineralization commencing from 100 m to 920 m, and remains open in most directions and at depth.
  • The summer 2016 program comprising 35,000 m of drilling is continuing with seven drill rigs active.  
  • The Company has cash on hand of approximately $90 million.

A drill hole location map and an A2 long section featuring the A2 High Grade Domain are shown in Figures 1 and 2.

Garrett Ainsworth, Vice-President, Exploration and Development, commented: "These latest drill results show that Arrow continues to develop at a rapid pace with infill drilling confirming the strength of the mineralizing system across the Arrow deposit. The Sub-Zone continues to deliver strong results with scissor hole -98c2 providing the second largest amount of minimum-greater-than-61,000 cps radioactivity which is only surpassed by the best hole at Arrow; hole AR-16-63c2.  Furthermore, the high-grade area of the A1 shear continues to develop rapidly with hole -98c1 being our best hole in the A1 to date."

Leigh Curyer, Chief Executive Officer, commented: "Infill drilling at Arrow continues to both confirm the continuity of grade and thickness of the deposit, especially within the A2 High Grade Domain as well as expanding the known area of mineralization.  In addition to Arrow, regional drilling this summer has already successfully led to a significant new mineral discovery 4.7 km northeast of Arrow called Harpoon which we continue to drill test along with regional targets to the southwest of Arrow along the Patterson Corridor."

Table 2: Arrow Deposit 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-16-92c2

147

-67

1052.00

111.00

562.00

562.50

0.50

<500 -  700

567.00

568.00

1.00

<500 -  610

570.50

575.00

4.50

<500 -  1200

585.00

586.50

1.50

<500 -  770

592.00

592.50

0.50

510 -  7000

596.00

596.50

0.50

<500 -  1700

604.50

621.00

16.50

<500 -  25000

627.00

628.00

1.00

<500 -  12000

630.50

631.50

1.00

<500 -  1600

637.50

640.50

3.00

<500 -  37000

643.50

653.50

10.00

<500 - >61000

657.50

658.00

0.50

<500 -  530

664.50

665.00

0.50

<500 -  900

668.00

668.50

0.50

<500 -  2000

672.50

674.00

1.50

<500 -  1150

744.50

748.00

3.50

<500 -  2700

775.50

776.00

0.50

<500 -  1900

778.50

794.50

16.00

<500 -  7000

797.00

801.50

4.50

<500 -  2000

810.00

813.50

3.50

<500 -  1500

817.50

821.00

3.50

<500 -  2200

829.00

830.00

1.00

<500 -  1800

835.50

840.00

4.50

<500 -  4300

858.00

859.00

1.00

<500 -  1500

861.50

862.00

0.50

<500 -  1400

864.50

867.00

2.50

<500 -  1900

872.50

873.00

0.50

<500 -  520

875.50

876.00

0.50

<500 -  550

891.00

894.50

3.50

<500 -  3800

898.00

898.50

0.50

<500 -  900

902.50

907.00

4.50

<500 -  2900

910.50

914.50

4.00

<500 -  1000

917.00

919.50

2.50

<500 -  22000

922.50

925.50

3.00

<500 -  4400

931.00

931.50

0.50

<500 -  2600

939.00

944.50

5.50

<500 -  29000

971.00

978.00

7.00

<500 -  22000

983.50

984.50

1.00

<500 - >61000

988.00

989.50

1.50

<500 -  18000

997.50

1002.00

4.50

<500 - >61000

1007.00

1010.00

3.00

<500 -  2900

AR-16-92c3

147

-67

972.00

111.00

531.00

542.00

11.00

<500 -  3800

554.00

556.50

2.50

<500 -  4800

559.00

561.50

2.50

<500 -  1300

570.50

571.00

0.50

<500 -  1100

575.00

576.50

1.50

<500 -  815

599.00

599.50

0.50

<500 -  1050

602.00

608.00

6.00

<500 -  11000

611.50

625.00

13.50

<500 - >61000

629.00

640.50

11.50

<500 - >61000

645.50

655.00

9.50

<500 -  3000

657.50

660.00

2.50

<500 -  6800

664.50

665.50

1.00

<500 -  3000

668.50

669.50

1.00

<500 -  1800

673.50

674.50

1.00

<500 -  1300

686.50

687.00

0.50

<500 -  580

696.75

700.00

3.25

<500 -  12000

713.00

715.50

2.50

<500 -  850

722.50

723.00

0.50

<500 -  540

774.00

774.50

0.50

<500 -  1160

792.00

794.50

2.50

<500 -  1700

816.00

823.00

7.00

<500 -  2800

829.50

830.50

1.00

<500 -  11000

833.50

834.50

1.00

<500 -  7000

846.00

847.00

1.00

<500 -  38000

874.00

875.50

1.50

<500 -  4600

881.50

882.00

0.50

<500 -  3300

899.00

900.00

1.00

<500 -  770

AR-16-92c4

147

-67

1041.00

111.00

538.00

538.50

0.50

<500 -  570

594.50

603.50

9.00

<500 -  19000

608.00

609.00

1.00

600 -  1800

612.00

612.50

0.50

<500 -  2200

615.50

620.00

4.50

<500 -  41000

630.50

631.00

0.50

<500 -  560

637.00

642.50

5.50

<500 - >61000

645.00

652.00

7.00

<500 -  17000

654.50

658.50

4.00

<500 -  4800

661.50

667.50

6.00

<500 -  1000

674.50

676.00

1.50

<500 -  1600

680.50

713.50

33.00

<500 - >61000

716.00

725.50

9.50

<500 -  11000

757.00

757.50

0.50

<500 -  900

766.00

767.00

1.00

<500 -  800

798.00

798.50

0.50

<500 -  550

807.50

815.50

8.00

<500 -  1700

822.50

829.00

6.50

<500 -  1900

831.50

834.00

2.50

<500 -  4900

836.50

837.00

0.50

<500 -  560

839.50

842.50

3.00

<500 -  1600

851.00

853.00

2.00

<500 -  2000

869.00

872.50

3.50

<500 -  1500

891.00

892.00

1.00

<500 -  1100

895.00

896.50

1.50

<500 -  2200

902.00

906.00

4.00

<500 -  1400

919.00

919.50

0.50

<500 -  560

933.50

934.50

1.00

<500 -  1100

940.50

945.00

4.50

<500 -  14000

967.50

982.00

14.50

<500 -  42000

998.50

999.00

0.50

<500 -  3750

1011.00

1011.50

0.50

<500 -  3100

AR-16-93c1

327

-69

849.00

138.00

420.00

420.50

0.50

<500 -  940

424.50

425.50

1.00

<500 -  1150

429.00

436.00

7.00

<500 -  3200

442.50

444.00

1.50

<500 -  740

450.00

501.00

51.00

<500 - >61000

509.00

511.00

2.00

<500 -  12000

604.00

605.00

1.00

<500 -  1800

626.50

629.00

2.50

<500 -  4100

631.50

633.50

2.00

<500 -  2400

636.00

643.00

7.00

<500 -  2600

678.00

678.50

0.50

<500 -  530

695.00

711.50

16.50

<500 -  4700

746.00

749.50

3.50

<500 -  6450

AR-16-93c2

327

-69

834.00

138.00

400.50

401.50

1.00

<500 -  1250

412.50

414.00

1.50

<500 -  1650

427.00

430.50

3.50

<500 -  1000

437.00

444.00

7.00

<500 -  2400

447.00

448.00

1.00

<500 -  800

453.00

465.00

12.00

<500 -  7800

468.00

505.50

37.50

<500 - >61000

509.00

510.50

1.50

<500 -  3300

514.00

520.00

6.00

<500 - >61000

524.00

525.00

1.00

<500 -  690

564.00

564.50

0.50

<500 -  500

594.50

595.00

0.50

<500 -  880

609.50

611.50

2.00

<500 -  650

614.00

617.00

3.00

<500 -  2500

625.50

628.00

2.50

<500 -  15000

656.50

657.00

0.50

<500 -  740

659.50

661.50

2.00

<500 -  1100

665.00

669.00

4.00

<500 -  16000

679.00

681.00

2.00

<500 -  2300

697.50

713.00

15.50

<500 -  56000

716.50

719.50

3.00

<500 -  1950

734.50

736.50

2.00

<500 -  520

AR-16-96c1

147

-73

1026.00

108.00

398.50

400.00

1.50

<500 -  720

406.50

415.50

9.00

<500 -  1500

512.50

513.50

1.00

<500 -  1350

517.50

518.00

0.50

<500 -  1600

522.00

545.00

23.00

<500 - >61000

564.50

577.50

13.00

<500 -  5100

581.00

581.50

0.50

<500 -  930

589.00

596.50

7.50

<500 -  10500

606.50

623.50

17.00

<500 -  35000

627.50

662.00

34.50

<500 -  42000

665.00

667.50

2.50

<500 -  700

670.00

673.00

3.00

<500 -  5600

682.50

684.00

1.50

<500 -  750

693.00

695.50

2.50

<500 -  2800

707.50

708.00

0.50

<500 -  1700

721.00

721.50

0.50

<500 -  510

724.50

725.00

0.50

<500 -  560

733.00

733.50

0.50

<500 -  530

737.50

741.50

4.00

<500 -  1000

762.50

763.00

0.50

<500 -  720

765.50

768.00

2.50

<500 -  1000

776.00

779.00

3.00

<500 -  710

783.50

784.00

0.50

<500 -  520

792.00

792.50

0.50

<500 -  1900

796.00

796.50

0.50

<500 -  6300

937.50

938.00

0.50

<500 -  600

964.50

965.00

0.50

<500 -  960

AR-16-98c1

327

-73

804.00

130.60

386.50

387.00

0.50

<500 -  1150

405.50

412.50

7.00

<500 -  4300

415.50

419.50

4.00

<500 -  1950

423.50

430.00

6.50

<500 -  2400

437.50

440.00

2.50

<500 -  1900

451.50

454.00

2.50

<500 -  1800

459.50

497.50

38.00

<500 - >61000

501.00

519.00

18.00

<500 - >61000

528.50

529.00

0.50

<500 -  520

532.00

532.50

0.50

<500 -  1200

570.50

576.00

5.50

<500 -  1000

593.00

597.00

4.00

<500 -  2200

602.50

603.00

0.50

<500 -  16000

658.50

661.00

2.50

<500 -  2200

665.00

687.00

22.00

<500 - >61000

692.50

696.00

3.50

<500 -  15000

699.50

704.50

5.00

<500 -  27000

734.50

736.00

1.50

<500 -  5200

747.00

747.50

0.50

<500 -  1700

AR-16-98c2

327

-73

804.00

130.60

414.00

419.00

5.00

<500 -  3550

422.50

427.00

4.50

<500 -  1000

429.50

433.00

3.50

<500 -  7000

455.00

463.50

8.50

<500 -  1200

466.00

489.00

23.00

<500 -  5500

492.00

527.50

35.50

<500 - >61000

537.00

542.00

5.00

<500 -  13000

589.00

591.00

2.00

<500 -  1800

637.00

637.50

0.50

<500 -  580

674.00

676.50

2.50

<500 -  1200

706.00

708.50

2.50

<500 -  2100

715.50

725.50

10.00

<500 -  2350

733.00

734.00

1.00

<500 -  1400

758.50

759.00

0.50

<500 -  7800

787.00

787.50

0.50

<500 -  540

793.00

793.50

0.50

<500 -  550

796.50

798.50

2.00

<500 -  850

805.50

808.50

3.00

<500 -  950

 

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

 

ARROW DEPOSIT DRILLING

AR-16-92c2

Hole AR-16-92c2 was a directional hole that departed pilot hole AR-16-92c1 at a depth of 213 m. It tested the A2 shear 21 m down-dip and northeast of AR-16-92c1 (9.5 m of off-scale radioactivity in the A2; assays pending) and the A3 shear 26 m down-dip and northeast of the same hole. Directional drilling was initiated at 228 m. The A2 and A3 shears where intersected at inclinations of -63° and -69°, respectively.

Basement lithologies were intersected beginning at the top of the hole and consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite (the A2 through A5 shears).  Anomalous to strongly anomalous radioactivity was intersected in the A2 through A5 shears in association with semi-massive veins, stringers, disseminated and fracture-controlled pitchblende mineralization. A total composite mineralization of 126.0 m including 3.95 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 448.0 m section (562.0 to 1010.0 m). In the A2 shear, 40.0 m of composite mineralization including 2.9 m of off-scale radioactivity was intersected. In the A3 shear, 23.0 m of composite mineralization was intersected. In the A4 shear, 40 m of composite mineralization including 0.3 m of off-scale radioactivity was intersected. In the A5 shear, 23.0 m of composite mineralization including 0.75 of off-scale radioactivity was intersected. The hole was terminated at 1050 m.

AR-16-92c3

Hole AR-16-92c3 was a directional hole that departed pilot hole AR-16-92c3 at a depth of 231 m. It tested the A2 shear 27 m southwest of AR-16-92c1 and the A3 shear 38 m northeast of the same hole. Directional drilling was initiated at 243 m. The A2 and A3 shears where intersected at inclinations of -61° and -62°, respectively.

Basement lithologies were intersected beginning at the top of the hole and consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite (the A2 through A5 shears). Anomalous to strongly anomalous radioactivity was intersected in the A2 through A5 shears in association with semi-massive veins, stringers, disseminated and fracture-controlled pitchblende mineralization. A total composite mineralization of 87.25 m including 11.05 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 369.0 m section (531.0 to 900.0 m). In the A2 shear, 49.5 m of composite mineralization including 10.8 m of off-scale radioactivity was intersected featuring 2.3 m at a minimum exceeding 61,000 cps. In the A3 shear, 21.75 m of composite mineralization including 0.05 m of off-scale radioactivity was intersected. the A4 shear, 12.0 m of composite mineralization including 0.1 m of off-scale radioactivity was intersected. the A5 shear, 4.0 m of composite mineralization including 0.1 m of off-scale radioactivity was intersected. The hole was terminated at 900 m.

AR-16-92c4

Hole AR-16-92c4 was a directional hole that departed pilot hole AR-16-92c3 at a depth of 246 m. It tested the A2 shear 44 m down-dip of AR-16-92c1 and the A3 shear 51 m down-dip of the same hole. Directional drilling was initiated at 307 m. The A2 and A3 shears were intersected at inclinations of -65° and -64°, respectively.

Basement lithologies were intersected beginning at the top of the hole and consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite (the A2 through A5 shears). Anomalous to strongly anomalous radioactivity was intersected in the A2 through A5 shears in association with semi-massive veins, stringers, disseminated and fracture-controlled pitchblende mineralization. A total composite mineralization of 138.5 m including 5.6 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 473.5 m section (538.0 to 1011.5 m). In the A2 shear, 39.5 m of composite mineralization including 2.25 m of off-scale radioactivity was intersected. In the A3 shear, 44.5 m of composite mineralization including 1.45 m of off-scale radioactivity was intersected. In the A4 shear, 33.0 m of composite mineralization was intersected. In the A5 shear, 21.0 m of composite mineralization including 1.90 m of off-scale radioactivity was intersected. The hole was terminated at 1041 m.

AR-16-93c1

Hole AR-16-93c1 was a directional hole collared from surface at an angled orientation (-69°) to the northwest (327° Azimuth). It was designed as a scissor hole to both verify the thickness of near vertically dipping mineralization in the A2 shear and to test the A1 shear in an area of very little drilling. Directional drilling was initiated at 201 m. The A1 and A2 shears were both intersected at an inclination of -67°.

The hole intersected heavily bleached and desilicified Athabasca Group sandstones between 123.0 m and the unconformity at 138.0 m. Basement lithologies consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite (the A1 through A3 shears). The hole successfully intersected highly anomalous radioactivity in the A1 and A2 shears that was associated with semi-massive to massive veins, chemical solution fronts, blebs and flecks of pitchblende. A total composite mineralization of 96.0 m including 6.75 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 329.5 m section (420.0 to 749.5 m). In the A1 shear, 29.5 m of mineralization was intersected. In the A2 shear, 63.0 m of composite mineralization including 6.75 m of off-scale radioactivity was intersected. In addition, 3.5 m of mineralization was intersected to the northwest of the A1 shear. The hole was terminated at 849 m.

AR-16-93c2

Hole AR-16-93c2 was a directional hole that departed pilot hole AR-16-93c1 at a depth of 204 m. It was designed as a scissor hole to both verify the thickness of near vertically dipping mineralization in the A2 shear and to test the A1 shear in an area of very little drilling. Directional drilling was initiated at 216 m. The A1 and A2 shears were intersected at inclinations of -68° and -69°, respectively.

Basement lithologies were intersected beginning at the top of the hole and consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite (the A1 through A3 shears).  The hole successfully intersected highly anomalous radioactivity in the A1 through A3 shears that was associated with semi-massive to massive veins, chemical solution fronts, blebs and flecks of pitchblende. A total composite mineralization of 109.5 m including 14.6 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 335 m section (400.5 to 736.5 m). In the A1 shear, 35.5 m of mineralization including 3.45 m of off-scale radioactivity was intersected. In the A2 shear, 69.5 m of composite mineralization including 11.15 m of off-scale radioactivity was intersected. In the A3 shear, 2.5 m of composite mineralization was intersected. In addition, 2.0 m of mineralization was intersected to the northwest of the A1 shear. The hole was terminated at 834 m.

AR-16-96c1

Hole AR-16-93c1 was a directional hole collared from surface at an angled orientation (-73°) to the southeast (147° Azimuth). It tested the A2 shear 25 m down-dip of AR-16-78c4 (17.60% U3O8 over 37.5 m in the A2 shear) and the A3 shear 22 m down-dip and southwest of AR-15-43a. Directional drilling was initiated at 291 m. The A2 and A3 shears were intersected at inclinations of -70° and -71°, respectively.

The hole intersected bleached Athabasca Group sandstones between 105.0 m and the unconformity at 108.0 m. Basement lithologies consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite (the A1 through A4 shears). Anomalous to strongly anomalous radioactivity was intersected in the A1 through A4 shears in association with semi-massive veins, stringers, disseminated and fracture-controlled pitchblende mineralization. A total composite mineralization of 131.5 m including 10.2 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 566.5 m section (398.5 to 965.0 m). In the A1 shear, 10.5 m of composite mineralization was intersected. In the A2 shear, 106.5 m of composite mineralization including 10.2 m of off-scale radioactivity was intersected. In the A3 shear, 13.5 m of composite mineralization was intersected. In the A4 shear, 1.0 m of composite mineralization was intersected. The hole was terminated at 1026 m.

AR-16-98c1

Hole AR-16-98c1 was a directional hole collared from surface at an angled orientation (-73°) to the northwest (327° Azimuth). It was designed as a scissor hole to both verify the thickness of near vertically dipping mineralization in the A2 shear and to test the A1 shear in the area of AR-16-84c1 (2.13% U3O8 over 28.5 m and 0.98% U3O8 over 18.0 m). Directional drilling was initiated at 249 m. The A1 and A2 shears were intersected at -69° and -72°, respectively.

The hole intersected heavily bleached and desilicified Athabasca Group sandstones between 110.6 m and the unconformity at 130.6 m. Basement lithologies consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite (the A1 and A3 shears). The hole successfully intersected highly anomalous radioactivity in the A1 and A2 shears that was associated with semi-massive to massive veins, chemical solution fronts, blebs and flecks of pitchblende. A total composite mineralization of 125.0 m including 15.85 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 492.5 m section (386.5 to 747.5 m). In the A2 shear, 80.0 m of composite mineralization including 6.4 m of off-scale radioactivity was intersected. In the A1 shear, 43.0 m of composite mineralization including 9.45 m of off-scale radioactivity was intersected. In addition, 2.0 m of mineralization was intersected northwest of the A1 shear. The hole was terminated at 804 m.

AR-16-98c2

Hole AR-16-98c2 was a directional hole that departed pilot hole AR-16-98c1 at a depth of 255 m. It was designed as a scissor hole to both verify the thickness of near vertically dipping mineralization in the A2 shear and to test the A1 shear in the area of AR-16-84c1. Directional drilling was initiated at 273 m. The A1 and A2 shears were both intersected at an inclination of -72°.

Basement lithologies were intersected beginning at the top of the hole and consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite (the A1 through A3 shears).  The hole successfully intersected highly anomalous radioactivity in the A1 and A2 shears that was associated with semi-massive to massive veins, chemical solution fronts, blebs and flecks of pitchblende. A total composite mineralization of 110.0 m including 10.05 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 394.5 m section (414.0 to 808.5 m). In the A1 shear 18.5 m of composite mineralization was intersected. In the A2 shear, 85.0 m of composite mineralization including 10.05 m of off-scale radioactivity was intersected. Mineralization in the A2 featured dense accumulations of massive pitchblende and 5.75 m at a minimum radioactivity exceeding 61,000 cps, 4.5 m of which was continuous. In addition, 6.5 m of mineralization was intersected to the northwest of the A1 shear. The hole was terminated at 923 m.

Technical Information

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. 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 partial and total digestions, ICP-OES for major and minor elements on a 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 and after stringent internal QA/QC protocols are passed.

All scientific and technical information in this news release has been prepared by or reviewed and approved by Mr. Garrett Ainsworth, P.Geo., Vice President – Exploration & Development for NexGen. Mr. Ainsworth is a qualified person for the purposes of National Instrument 43-101 Standards of Disclosure for Mineral Projects ("NI 43-101"), and has verified the sampling, analytical, and test data underlying the information or opinions contained herein by reviewing original data certificates and monitoring all of the data collection protocols.

For details of the Rook I Project including the quality assurance program and quality control measures applied and key assumptions, parameters and methods used to estimate the mineral resource set forth above please refer to the technical report entitled "Technical Report on the Rook 1 Property, Saskatchewan, Canada" dated effective April 13, 2016 (the "Rook 1 Technical Report") prepared by Mark B. Mathisen and David Ross, each of whom is a "qualified person" under NI 43-101. The Rook I Technical Report is available for review under the Company's profile on SEDAR at www.sedar.com.

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 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, Bow Discovery in March 2015 and Harpoon Discovery in August 2016. The Arrow Deposit's maiden Inferred mineral resource estimate is 201.9 M lbs U3O8 contained in 3.48 M tonnes grading 2.63% U3O8.

This news release contains "forward-looking information" within the meaning of applicable Canadian securities legislation.  "Forward-looking information" includes, but is not limited to, statements with respect to the activities, events or developments that the Company expects or anticipates will or may occur in the future, including, without limitation, the proposed use of proceeds and planned exploration activities. Generally, but not always, forward-looking information and statements can be identified by the use of words such as "plans", "expects", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates", or "believes" or the negative connotation thereof or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" or the negative connation thereof.

Such forward-looking information and statements are based on numerous assumptions, including among others, that the results of planned exploration activities are as anticipated, the price of uranium, the anticipated cost of planned exploration activities, that general business and economic conditions will not change in a material adverse manner, that financing will be available if and when needed and on reasonable terms, and 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 or making forward-looking statements are considered reasonable by management at the time, there can be no assurance that such assumptions will prove to be accurate.

Forward-looking information and statements also involve 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 or statements, including, among others: negative operating cash flow and dependence on third party financing, uncertainty of additional financing, no known mineral reserves or resources, pending assay results may not be consistent with preliminary results, discretion in the use of proceeds, alternative sources of energy, aboriginal title and consultation issues, reliance on key management and other personnel, potential downturns in economic conditions, actual results of exploration activities being different than anticipated, changes in exploration programs based upon results, 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.

Although the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in the forward-looking information or implied by forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that forward-looking information and statements will prove to be accurate, as actual results and future events could differ materially from those anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking statements or information.  The Company 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.

SOURCE NexGen Energy Ltd.

Image with caption: "Figure 1: Arrow Deposit Drill Hole Location (CNW Group/NexGen Energy Ltd.)". Image available at: http://photos.newswire.ca/images/download/20160906_C3331_PHOTO_EN_765569.jpg

Image with caption: "Figure 3: A2 Mineralized Shear Long Section (Close Up of the A2 High Grade Domain) (CNW Group/NexGen Energy Ltd.)". Image available at: http://photos.newswire.ca/images/download/20160906_C3331_PHOTO_EN_765571.jpg

For further information: Leigh Curyer, Chief Executive Officer, NexGen Energy Ltd., +1 604 428 4112, lcuryer@nexgenenergy.ca, www.nexgenenergy.ca; Travis McPherson, Corporate Development Manager, NexGen Energy Ltd., +1 604 428 4112, tmcpherson@nexgenenergy.ca, http://www.nexgenenergy.ca

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