NexGen Expands A2 High Grade Domain to Northeast and Intersects Strong Mineralization Between Arrow and 180 m Southwest Area

 

VANCOUVER, Nov. 2, 2016 /CNW/ - NexGen Energy Ltd. ("NexGen" or the "Company") (TSX:NXE, OTCQX:NXGEF) is pleased to report radioactivity results from our on-going summer drilling program on our 100% owned, Rook I property, Athabasca Basin, Saskatchewan.

Step out drilling from the Arrow Deposit has returned substantial off-scale radioactivity in multiple holes. Two holes intersected extensive mineralization northeast of the A2 High Grade Domain, highlighted by drill hole AR-16-108c2, which intersected 69.5 m of total composite mineralization including 18.05 m of off-scale radioactivity (>10,000 to >61,000 cps) in the A2 shear that was anchored by local accumulations of dense massive pitchblende mineralization and was drilled 30 m northeast of AR-14-30 (see News Release dated October 6, 2014).  Drilling confirms that A2 Sub-Zone style mineralization extends northeast of drill hole -30, where very little drilling has been completed to-date. 

Additionally, three holes (AR-16-103, -97, -100) completed between the Arrow Deposit and the new mineralized area 180 m to the southwest each intersected strong mineralization over significant lengths and off-scale radioactivity that locally exceeded 61,000 cps. Of specific importance, drill hole AR-16-103 intersected 66.0 m of total composite mineralization including 5.5 m of off-scale radioactivity (>10,000 - >61,000 cps).  Furthermore, drilling continues to highlight that the area 180 m southwest of Arrow is highly prospective as multiple holes in this area intersected broad zones of mineralization including local concentrations of off-scale radioactivity.

In total, 26 holes have now been drilled up to 240 m southwest from the maiden NI 43-101 Arrow Deposit Inferred Mineral Resource. Numerous holes intersected multiple mineralized shears akin to the Arrow Deposit, which are likely extensions of the Arrow shear zones. Drilling reported in this news release indicates continuous mineralization along this 240 m southwest extension.  Arrow's total strike length now extending 895 m.  Mineralization remains open further along strike to the southwest, and is also open laterally and vertically.

Highlights:

A2 Shear:

  • Hole AR-16-108c2 (106 m down-dip and northeast from AR-15-44b) intersected 69.5 m of total composite mineralization including 18.05 m of total composite off-scale radioactivity (>10,000 to >61,000 cps) within a 117.0 m section (518.5 to 635.5 m) in the A2 shear. A total of 12.65 m of the composite off-scale radioactivity was intersected within a 13.8 m section that featured local accumulations of dense massive pitchblende (591.2 to 605.0 m).
  • Hole AR-16-108c1 (100 m down-dip and northeast from AR-15-44b) intersected 68.5 m of total composite mineralization including 9.7 m of total composite off-scale radioactivity (>10,000 to >61,000 cps) within a 119.5 m section (555.0 to 674.5 m) in the A2 shear.

Southwest Mineralized Zone:

  • Hole AR-16-103 (265 m down-dip and northeast from AR-16-90c3) intersected 66.0 m of total composite mineralization including 5.5 m of total composite off-scale radioactivity (>10,000 to >61,000 cps) within a 231.5 m section (654.0 to 885.5 m). A total of 4.55 m of the composite off-scale radioactivity was intersected within 16.5 m of continuous mineralization (717.0 - 733.5 m).
  • Hole AR-16-97 (145 m down-dip and northeast from AR-16-90c3) intersected 73.5 m of total composite mineralization including 3.9 m of total composite off-scale radioactivity (>10,000 to >61,000 cps) within a 299.5 m section (637.5 to 937.0 m). A total of 2.55 m of the composite off-scale radioactivity was intersected within 18.0 m of continuous mineralization (750.5 - 768.5 m).
  • Hole AR-16-100 (280 m down-dip and northeast from AR-16-90c3) intersected 87.5 m of total composite mineralization including 0.25 m of total composite off-scale radioactivity (>10,000 to 15,000 cps) within a 439.0 m section (502.5 to 941.5 m).

Activities & Financial

  • The summer 2016 program of seven drill rigs continues and will conclude early November 2016.  
  • The Company has cash on hand of approximately $75 million.

A2 and schematic long sections showing the southwest mineralized area as well as a plan maps are shown in Figures 1 to 4. Table 1 shows a summary of Arrow mineralized intervals.

Garrett Ainsworth, Vice-President, Exploration and Development, commented: "The substantial high grade mineralization drilled in holes AR-16-108c1 and -108c2 have very positive implications for the growth of the A2 High Grade Domain. The width and strength of mineralized intervals at the 180 m southwest area continue to display the significant potential that is open further to the southwest.  The regional northeast to southwest trend that controls much of the mineralization at Arrow has delivered strong continuity with all three drill holes testing the gap between the Arrow Deposit and the 180 m southwest area intersecting strong uranium mineralization.  Additionally, regional drilling has uncovered two highly prospective areas with strong alteration and anomalous radioactivity, that will be drilled in the winter 2017 drill program."

Leigh Curyer, Chief Executive Officer commented: "Arrow continues to expand rapidly. With the discovery of high-grade mineralization northeast of AR-14-30 and the confirmation that mineralization is continuous between Arrow and the 180 m southwest area highlights significant drilling is required to ultimately assess the ultimate size and scale of Arrow.  The summer 2016 program is scheduled to complete mid November and has been the largest to-date on the project.  With ~$75M in the treasury, the Company is well funded for the 2017 programs including an updated resource estimate, continued infill, expansion and regional drilling as well as the maiden pre-feasibility study scheduled for H2 2017."

Table 1: 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-16-90c4

140

-75

932.00

N/A

685.50

688.00

2.50

<500 -  2100

703.50

704.00

0.50

<500 -  1700

706.50

731.00

24.50

<500 -  4100

735.50

753.00

17.50

<500 -  5100

758.00

759.50

1.50

<500 -  1400

780.50

781.50

1.00

<500 -  800

787.50

788.50

1.00

<500 -  780

833.00

833.50

0.50

<500 -  850

AR-16-90c5

140

-75

882.00

N/A

709.00

709.50

0.50

<500 -  950

715.50

716.00

0.50

<500 -  1050

721.00

721.50

0.50

<500 -  550

741.50

743.00

1.50

<500 -  1200

751.50

752.00

0.50

<500 -  2300

756.00

756.50

0.50

<500 -  1100

784.50

785.50

1.00

<500 -  1200

789.00

791.50

2.50

<500 -  6800

796.00

797.00

1.00

<500 -  720

800.50

802.50

2.00

<500 -  860

806.50

807.00

0.50

<500 -  720

AR-16-90c6

140

-75

966.00

N/A

636.50

646.50

10.00

<500 -  1800

677.00

677.50

0.50

<500 -  1050

682.00

682.50

0.50

<500 -  550

685.00

685.50

0.50

<500 -  660

688.00

694.00

6.00

<500 -  3350

700.00

711.50

11.50

<500 -  3700

718.50

727.00

8.50

<500 -  3200

733.50

736.50

3.00

<500 -  1250

744.50

750.50

6.00

<500 -  2700

753.00

758.50

5.50

<500 -  2100

764.00

780.50

16.50

<500 -  2800

792.00

792.50

0.50

<500 -  550

841.00

842.00

1.00

<500 -  550

910.00

910.50

0.50

<500 -  1250

AR-16-94c1

147

-70

921.00

98.80

760.00

760.50

0.50

<500 -  1300

773.00

779.00

6.00

<500 -  2100

795.00

796.00

1.00

<500 -  1200

854.00

854.50

0.50

<500 -  510

860.00

863.00

3.00

<500 -  3000

AR-16-94c2

147

-70

223.00

N/A

ABANDONED

AR-16-95c1

147

-70

1044.00

94.50

617.00

618.50

1.50

<500 -  730

685.50

689.00

3.50

<500 -  3600

694.00

694.50

0.50

<500 -  510

704.50

706.00

1.50

<500 -  1850

715.00

715.50

0.50

<500 -  560

723.50

728.50

5.00

<500 -  5400

734.00

739.50

5.50

<500 -  2050

743.50

752.00

8.50

<500 -  18500

756.50

757.50

1.00

<500 -  1150

770.00

771.50

1.50

<500 -  730

774.00

781.50

7.50

<500 -  10200

784.00

785.00

1.00

<500 -  6200

845.50

846.00

0.50

<500 -  630

854.50

855.00

0.50

<500 -  1600

864.00

864.50

0.50

<500 -  2200

867.00

867.50

0.50

<500 -  550

872.50

873.00

0.50

<500 -  520

891.00

891.50

0.50

<500 -  660

897.00

902.00

5.00

<500 -  1650

911.50

912.50

1.00

<500 -  650

927.00

927.50

0.50

<500 -  700

943.50

947.50

4.00

<500 -  2100

AR-16-95c2

147

-70

807.00

N/A

300.50

303.50

3.00

<500 -  610

693.50

695.00

1.50

<500 -  1250

700.00

700.50

0.50

<500 -  650

721.50

726.50

5.00

<500 -  9100

AR-16-97

147

-73

1005.00

93.70

637.50

640.00

2.50

<500 -  11000

652.50

654.00

1.50

<500 -  1200

659.00

660.00

1.00

<500 -  6000

672.50

673.00

0.50

<500 -  670

678.00

678.50

0.50

<500 -  525

684.50

696.00

11.50

<500 -  35000

699.50

711.50

12.00

<500 -  4500

714.50

715.50

1.00

<500 -  560

733.50

734.00

0.50

<500 -  790

739.50

740.50

1.00

<500 -  2500

747.00

748.00

1.00

<500 -  4500

750.50

768.50

18.00

<500 -  >61000

793.50

794.00

0.50

<500 -  5200

805.00

805.50

0.50

<500 -  1300

812.50

815.50

3.00

<500 -  2050

818.50

825.50

7.00

<500 -  2350

833.00

834.50

1.50

<500 -  2100

837.00

838.50

1.50

<500 -  900

862.00

863.50

1.50

<500 -  700

866.00

866.50

0.50

<500 -  650

908.00

908.50

0.50

<500 -  1100

911.50

916.50

5.00

<500 -  900

927.50

928.00

0.50

<500 -  5600

936.50

937.00

0.50

<500 -  1100

AR-16-99c1

327

-70

998.00

N/A

732.00

734.00

2.00

<500 -  5400

738.00

763.00

25.00

<500 -  30000

768.00

776.50

8.50

<500 -  2900

785.50

787.00

1.50

<500 -  1200

832.00

835.50

3.50

<500 -  1000

848.00

849.00

1.00

<500 -  560

851.50

853.00

1.50

<500 -  1600

861.00

865.50

4.50

<500 -  1400

871.50

872.50

1.00

<500 -  900

878.50

879.50

1.00

<500 -  1300

884.00

888.00

4.00

<500 -  980

917.00

920.00

3.00

<500 -  620

949.00

949.50

0.50

<500 -  900

AR-16-99c2

327

-70

966.00

N/A

723.00

724.00

1.00

<500 -  1900

740.50

747.50

7.00

<500 -  29000

751.50

771.00

19.50

<500 -  6300

775.50

776.00

0.50

<500 -  680

811.00

811.50

0.50

<500 -  510

863.00

864.50

1.50

<500 -  2200

875.00

891.50

16.50

<500 -  2100

894.50

895.00

0.50

<500 -  650

905.50

907.00

1.50

<500 -  800

921.00

921.50

0.50

<500 -  650

AR-16-99c3

327

-70

1013.00

N/A

707.50

708.00

0.50

<500 -  800

730.50

731.00

0.50

<500 -  530

749.00

752.50

3.50

<500 -  5000

759.00

759.50

0.50

<500 -  9000

762.50

767.50

5.00

<500 -  1950

770.00

779.50

9.50

<500 -  2700

794.50

801.00

6.50

<500 -  3800

808.00

812.50

4.50

<500 -  1250

893.50

894.00

0.50

<500 -  750

918.00

918.50

0.50

<500 -  700

930.50

931.00

0.50

<500 -  540

978.00

978.50

0.50

<500 -  760

AR-16-100

147

-73

978.00

102.00

502.50

503.00

0.50

<500 -  2400

628.50

638.50

10.00

<500 -  4400

641.50

653.50

12.00

<500 -  11000

660.00

671.00

11.00

<500 -  15000

676.50

678.00

1.50

<500 -  2850

681.00

690.00

9.00

<500 -  4900

698.50

699.50

1.00

<500 -  2600

772.50

773.50

1.00

<500 -  1250

780.00

788.50

8.50

<500 -  3200

792.50

797.00

4.50

<500 -  4500

801.50

806.00

4.50

<500 -  2450

809.50

810.50

1.00

<500 -  2400

847.50

848.50

1.00

<500 -  550

853.50

871.00

17.50

<500 -  2450

874.50

875.00

0.50

<500 -  790

879.50

880.00

0.50

<500 -  1950

913.50

916.00

2.50

<500 -  1700

921.50

922.00

0.50

<500 -  520

941.00

941.50

0.50

<500 -  1100

AR-16-103

147

-73

951.00

97.70

654.00

658.50

4.50

<500 -  1200

662.00

666.00

4.00

<500 -  1000

669.50

670.00

0.50

<500 -  700

681.00

689.50

8.50

<500 -  13000

717.00

733.50

16.50

<500 -  61000

736.00

736.50

0.50

<500 -  800

744.00

744.50

0.50

<500 -  1000

748.50

757.00

8.50

<500 -  43000

786.00

786.50

0.50

<500 -  1200

810.00

811.00

1.00

<500 -  2900

813.50

820.00

6.50

<500 -  3700

851.50

861.50

10.00

<500 -  14000

871.00

871.50

0.50

<500 -  510

881.50

885.50

4.00

<500 -  2900

AR-16-108c1

147

-70

828.50

115.50

381.00

386.50

5.50

<500 -  1100

390.00

393.50

3.50

<500 -  550

396.50

398.00

1.50

<500 -  950

402.50

418.00

15.50

<500 -  1500

555.00

575.00

20.00

<500 -  >61000

578.50

588.00

9.50

<500 -  28000

602.00

606.50

4.50

<500 -  4000

609.00

611.00

2.00

<500 -  1400

616.00

617.00

1.00

<500 -  800

640.50

660.50

20.00

<500 -  50000

663.00

674.50

11.50

<500 -  1850

685.00

691.50

6.50

<500 -  2050

704.00

705.50

1.50

<500 -  2900

713.50

715.00

1.50

<500 -  1650

775.50

776.50

1.00

<500 -  660

779.50

780.00

0.50

<500 -  1550

807.50

808.00

0.50

<500 -  550

812.00

812.50

0.50

<500 -  1600

AR-16-108c2

147

-70

957.50

115.50

372.00

372.50

0.50

<500 -  780

377.50

379.50

2.00

<500 -  1550

384.00

387.50

3.50

<500 -  1500

391.00

394.50

3.50

<500 -  4500

397.50

413.00

15.50

<500 -  31000

518.50

519.00

0.50

<500 -  530

522.00

541.00

19.00

<500 -  36500

549.00

551.50

2.50

<500 -  15000

588.00

635.50

47.50

<500 -  >61000

646.00

647.00

1.00

<500 -  1200

687.50

688.00

0.50

<500 -  688

697.00

699.50

2.50

<500 -  820

705.00

705.50

0.50

<500 -  1300

726.50

727.50

1.00

<500 -  960

732.00

733.00

1.00

<500 -  1050

741.00

741.50

0.50

<500 -  540

745.00

750.50

5.50

<500 -  1300

812.50

817.00

4.50

<500 -  2900

823.50

828.00

4.50

<500 -  >61000

830.50

832.50

2.00

<500 -  30000

836.50

844.00

7.50

<500 -  32600

859.50

860.00

0.50

<500 -  1400

878.50

879.50

1.00

<500 -  3100

887.50

888.00

0.50

<500 -  2000

934.50

935.50

1.00

<500 -  660

 

Parameters:

  • Maximum internal dilution 2.00 m downhole
  • All depths and intervals are meters downhole, true thicknesses will not be known until the next updated Arrow Deposit mineral resource estimate
  • "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-16-90c4

Hole AR-16-90c4 was a directional hole that departed pilot hole AR-16-90c3 at a depth of 408 m. It tested the mineralized area 180 m southwest of Arrow, and was located 67 m down-dip of AR-16-90c3 (8.09% U3O8 over 13.0 m and 14.35% U3O8 over 5.0m). Directional drilling was initiated at 417 m. The mineralized area 180 m southwest of Arrow was 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, with relatively narrow intervals of pelitic gneiss and mylonite. A total composite mineralization of 49.0 m was intersected within a 148.0 m section (685.5 to 833.5 m) before the hole was terminated at 932 m.

AR-16-90c5

Hole AR-16-90c5 was a directional hole that departed pilot hole AR-16-90c4 at a depth of 421 m. It tested the mineralized area 180 m southwest of Arrow, and was located 32 m up-dip of AR-16-90c3. Directional drilling was initiated at 432 m. The mineralized area 180 m southwest of Arrow was intersected at an inclination of -68°.

Basement lithologies were intersected beginning at the top of the hole and consisted largely of semipelitic gneiss to granofel, with relatively narrow intervals of pelitic gneiss and mylonite. A total composite mineralization of 11.0 m was intersected within a 148.0 m section (709.0 to 807.0 m) before the hole was terminated at 882 m.

AR-16-90c6

Hole AR-16-90c6 was a directional hole that departed pilot hole AR-16-90c5 at a depth of 435 m. It tested the mineralized area 180 m southwest of Arrow, and was located 28 m down-dip of AR-16-90c3. Directional drilling was initiated at 450 m. The mineralized area 180 m southwest of Arrow was intersected at an inclination of -71°.

Basement lithologies were intersected beginning at the top of the hole and consisted largely of semipelitic gneiss to granofel, with relatively narrow intervals of pelitic gneiss and mylonite. A total composite mineralization of 70.5 m was intersected within a 274.0 m section (636.5 to 910.5 m) before the hole was terminated at 882 m.

AR-16-94c1

Hole AR-16-94c1 was a directional hole collared from surface at an angled orientation (-70°) to the southeast (147° azimuth). It tested the mineralized area 180 m southwest of Arrow, and was located 30 m up-dip and southwest of AR-16-90c3. Directional drilling was initiated at 201 m. The mineralized area 180 m southwest of Arrow was intersected at an inclination of -69°.

The hole intersected heavily bleached and desilicified Athabasca Group sandstones between 95.2 m and the unconformity at 98.8 m. Basement lithologies consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite. A total composite mineralization of 11.0 m was intersected within a 103.0 m section (760.0 to 863.0 m) before the hole was terminated at 921.0 m.

AR-16-94c2

Hole AR-16-94c2 was a directional hole that departed pilot hole AR-16-94c1 at a depth of 201 m. It was abandoned at 223 m due to poor ground conditions.

AR-16-95c1

Hole AR-16-95c1 was a directional hole collared from surface at an angled orientation (-70°) to the southeast (147° azimuth). It tested the mineralized area 180 m southwest of Arrow, and was located 36 m northeast of AR-16-90c3. Directional drilling was initiated at 501 m. The mineralized area 180 m southwest of Arrow was intersected at an inclination of -70°.

The hole intersected heavily bleached and desilicified Athabasca Group sandstones between 93.5 m and the unconformity at 94.5 m. Basement lithologies consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite. A total composite mineralization of 51.0 m including 0.7 m of off-scale radioactivity (>10,000 to 18,500 cps) was intersected within a 330.5 m section (617.0 to 947.5 m) before the hole was terminated at 1,044 m.

AR-16-95c2

Hole AR-16-95c2 was a directional hole that departed pilot hole AR-16-95c1 at a depth of 189.0 m. It tested the mineralized area 180 m southwest of Arrow, and was located 57 m northeast of AR-16-90c3. Directional drilling was initiated at 339 m. The mineralized area 180 m southwest of Arrow was intersected at an inclination of -69°.

Basement lithologies were intersected beginning at the top of the hole and consisted largely of semipelitic gneiss to granofel, with relatively narrow intervals of pelitic gneiss and mylonite. A total composite mineralization of 10.0 m was intersected within a 426.0 m section (300.5 to 726.5 m) before the hole was terminated at 807 m.

AR-16-97

Hole AR-16-97 was a directional hole collared from surface at an angled orientation (-73°) to the southeast (147° azimuth). It tested the gap between the Arrow Deposit and the mineralized area 180 m to the southwest 145 m down-dip and northeast of AR-16-90c3. Directional drilling was initiated at 228 m. The extensions of the Arrow shear zones were intersected at inclinations between -70° and -72°.

The hole intersected a thin veneer of heavily bleached Athabasca Group sandstones between 93.6 m and the unconformity at 93.7 m. Basement lithologies consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite. A total composite mineralization of 73.5 m including 3.9 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 299.5 m section (637.5 to 937.0 m) before the hole was terminated at 1,005 m. A total of 2.55 m of composite off scale radioactivity was intersected within an 18.0 m interval of continuous mineralization between 750.5 and 768.5 m.

AR-16-99c1

Hole AR-16-99c1 was a directional hole collared from surface at an angled orientation (-70°) to the northwest (327° azimuth). It was drilled as a scissor hole to test the dip direction of mineralization in the area 180 m southwest of the Arrow Deposit and tested that area 17 m down-dip and northeast of AR-16-90c3. Directional drilling was initiated at 165 m. The mineralized area 180 m southwest of Arrow was intersected at an inclination of -62°.

Basement lithologies were intersected beginning immediately beneath glacial overburden at 99.7 m and consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite. A total composite mineralization of 57.0 m including 0.4 m of off-scale radioactivity (>10,000 to 30,000 cps) was intersected within a 217.5 m section (732.0 to 949.5 m) before the hole was terminated at 980 m.

AR-16-99c2

Hole AR-16-99c2 was a directional hole that departed pilot hole AR-16-99c1 at a depth of 456 m. It tested the mineralized area 180 m southwest of Arrow, and was located 43 m down-dip of AR-16-90c3. Directional drilling was initiated at 471 m. The mineralized area 180 m southwest of Arrow was intersected at an inclination of -65°.

Basement lithologies were intersected beginning at the top of the hole and consisted largely of semipelitic gneiss to granofel, with relatively narrow intervals of pelitic gneiss and mylonite. A total composite mineralization of 49.0 m including 0.35 m of off-scale radioactivity (>10,000 to 29,000 cps) was intersected within a 198.5 m section (723.0 to 921.5 m) before the hole was terminated at 966 m.

AR-16-99c3

Hole AR-16-99c3 was a directional hole that departed pilot hole AR-16-99c2 at a depth of 474 m. It tested the mineralized area 180 m southwest of Arrow, and was located 70 m down-dip of AR-16-90c3. Directional drilling was initiated at 486 m. The mineralized area 180 m southwest of Arrow was intersected at an inclination of -67°.

Basement lithologies were intersected beginning at the top of the hole and consisted largely of semipelitic gneiss to granofel, with relatively narrow intervals of pelitic gneiss and mylonite. A total composite mineralization of 32.5 m was intersected within a 271.0 m section (707.5 to 978.5 m) before the hole was terminated at 1,013m.

AR-16-100

Hole AR-16-100 was a directional hole collared from surface at an angled orientation (-73°) to the southeast (147° azimuth). It tested the gap between the Arrow Deposit and the mineralized area 180 m to the southwest 135 m down-dip and northeast of AR-16-97 (3.9 m of off-scale radioactivity; assays pending). Directional drilling was initiated at 216 m. The extensions of the Arrow shear zones were intersected at inclinations between -71 and -75°.

The hole intersected heavily bleached and desilicified Athabasca Group sandstones between 96.5 m and the unconformity at 102.0 m. Basement lithologies consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite. A total composite mineralization of 87.5 m including 0.25 m of off-scale radioactivity (>10,000 to 15,000 cps) was intersected within a 439 m section (502.5 to 941.5 m) before the hole was terminated at 978 m.

AR-16-103

Hole AR-16-103 was a directional hole collared from surface at an angled orientation (-73°) to the southeast (147° azimuth). It tested the gap between the Arrow Deposit and the mineralized area 180 m to the southwest 175 m down-dip of AR-16-97. Directional drilling was initiated at 294 m. The extensions of the Arrow shear zones were intersected at inclinations between -72 and -74°.

The hole intersected bleached and desilicified Athabasca Group sandstones between 91.6 m and the unconformity at 97.7 m. Basement lithologies consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite. A total composite mineralization of 66.0 m including 5.5 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 231.5 m section (654.0 to 885.5 m) before the hole was terminated at 978 m. A total of 4.55 m of composite off scale radioactivity was intersected within a 16.5 m interval of continuous mineralization between 717.0 and 733.5 m.

AR-16-108c1

Hole AR-16-108c1 was a directional hole collared from surface at an angled orientation (-70°) to the southeast (147° Azimuth). It tested the A1 shear 75 m up-dip and southwest of AR-14-26 (0.47% U3O8 over 47.5 m in the A1 shear) and the A2 shear 15 m northeast of vertical hole AR-14-30 (5.88% U3O8 over 24.0 m in the A2 shear). Directional drilling was initiated at 333 m. The A1 and A2 shears were intersected at inclinations of -71° and -69°, respectively.

The hole intersected bleached and desilicified Athabasca Group sandstones between 102.0 m and the unconformity at 115.5 m.  Basement lithologies consisted largely of semipelitic gneiss to granofel and relatively narrow intervals of pelitic gneiss and mylonite (the A1 through A3 shears). Anomalous to strongly anomalous radioactivity was intersected in the A1 through A3 shears in association with massive to semi-massive veins, stringers, disseminated and fracture-controlled pitchblende mineralization. A total composite mineralization of 106.5 m including 9.7 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 431.5 m section (381.0 to 812.5 m). In the A1 shear, 26.0 m of total composite mineralization was intersected. In the A2 shear, 68.5 m of composite mineralization including 9.7 m of off-scale radioactivity was intersected. In the A3 shear, 12.0 m of composite mineralization was intersected. The hole was terminated at 828.5 m.

AR-16-108c2

Hole AR-16-108c2 was a directional hole that departed pilot hole AR-16-108c1 at a depth of 341 m. It tested the A1 shear 78 m up-dip and southwest of AR-14-26 (0.47% U3O8 over 47.5 m in the A1 shear) and the A2 shear 25 m northeast of AR-14-15 (3.42% U3O8 over 22.35 m and 1.52% U3O8 over 32.0 m in the A2 shear). Directional drilling was initiated at 351 m. The A1 and A2 shears were both intersected at an inclination of -68°.

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 A4 shears). Anomalous to strongly anomalous radioactivity was intersected in the A1 through A4 shears in association with massive to semi-massive veins, stringers, disseminated and fracture-controlled pitchblende mineralization. A total composite mineralization of 128.5 m including 20.9 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 563.5 m section (372.0 to 935.5 m). In the A1 shear, 25.0 m of total composite mineralization including 1.25 m of off-scale radioactivity was intersected. In the A2 shear, 69.5 m of total composite mineralization including 18.05 m of off-scale radioactivity was intersected. In the A3 shear, 12.5 m of total composite mineralization was intersected. In the A4 shear, 20.5 m of total composite mineralization including 1.6 m of off-scale mineralization was intersected. In the A5 shear, 1.0 m of total composite mineralization was intersected. The hole was terminated at 957.5 m.

REGIONAL DRILLING

The Company completed 12 regional drill holes (not including the Harpoon discovery area) on the Patterson Corridor during the summer program. Strong alteration and anomalous radioactivity associated with uranium (using handheld RS-125 spectrometer) was intersected in two separate areas located 1.1 km southwest and 2.3 km south-southwest of the Arrow Deposit.

1.1 km Southwest of Arrow

Holes RK-16-110 through RK-16-113 were drilled as a southeast fence (140° azimuth) at angled orientations (-70° inclination) to test for mineralization within the interpreted extensions of the Arrow shear zones 1.1 km southwest of the Arrow Deposit. Drilling targeted a large airborne resistivity anomaly and other favourable geophysical features, at and around the same elevation as the higher grade A2 Sub-Zone at Arrow where a similar airborne resistivity anomaly has also been identified.

Quaternary glacial overburden, Cretaceous mudstones to siltstones and Devonian sandstones of the La Loche Formation were intersected in holes RK-16-110 through RK-16-112 immediately above basement lithologies, which consisted largely of semi-pelitic and pelitic gneiss as well orthogneiss. Hole RK-16-113 also intersected a thin veneer of Athabasca Group sandstones immediately above the basement. The resistivity anomaly was sourced in heavily graphitic, pyritic and mylonitic pelitic gneiss first encountered in RK-16-111.

Hydrothermal alteration was first intersected in RK-16-111 where subtle widespread, pervasively disseminated clay-sericite alteration was observed beginning at 721 m. It was hosted within siliceous garnet pseudomorph rich semi-pelitic gneiss very similar and likely equivalent to the rocks hosting the Arrow Deposit. Hole RK-16-112 then intersected an intermittent strong clay alteration zone over 65 m (783 to 848 m) where stronger alteration was closely associated with increased brittle and ductile deformation. Anomalous radioactivity of 120 cps to 205 cps was intersected from 790.0 to 790.5 m.  Again, the alteration was hosted within Arrow-like semi-pelitic gneiss.

The four-hole fence has located the likely extensions of the Arrow shears, and has shown that the Arrow alteration system continues at least 1.1 km southwest from the deposit into an area with very little drilling. Analytical results remain pending.

2.3 km South-Southwest of Arrow

Holes RK-16-98, -100, -102, -104, -106, and -108 were drilled between 1.9 and 2.2 km south-southwest of the Arrow Deposit on a separate VTEM conductor within the Patterson Corridor.  The target area tested a disrupted VTEM conductor and gravity low situated along a steep magnetic gradient, which is a similar geophysical signature associated with Arrow.  All six holes were collared from surface at angled orientations between -60° and -75° towards both the northwest and southeast.  Bleached and weakly desilicified Athabasca Group sandstones were intersected in one hole (RK-16-98). The remainder intersected basement lithologies below Quaternary glacial overburden, with several holes intersecting Cretaceous mudstones to siltstones and/or Devonian sandstones of the La Loche Formation between the basement and the Quaternary overburden. Basement lithologies intersected in the six holes consisted largely of semi-pelitic to pelitic gneiss and orthogneiss. Locally graphitic brittle and ductile deformation zones with widths ranging from one to tens of metres were intersected in each hole.  

Hole RK-16-108 intersected anomalous uraniferous radioactivity (80 to 320 cps from 327.0 to 327.5 m, and 80 to 350 cps from 356.0 to 357.0 m) within a zone of strong hydrothermal alteration that extended nearly continuously from the top of basement rock at 60.0 to 430.0 m. Two distinctive alteration features were present in the hole including (1) near complete silica replacement with accessory clay and hematite and (2) moderate to intense clay alteration where near complete to complete clay replacement was observed over core lengths up to 12 m.

In addition, hole RK-16-98 also intersected anomalous uraniferous radioactivity (90 to 175 cps) in association with extensive strong to intense hydrothermal alteration very similar to what was intersected in drill hole RK-16-108. However, hole RK-16-98 also intersected a zone of dravite alteration between 200 and 250 m, which has been an excellent vector for uranium mineralization at the Arrow Deposit.  

Drill holes RK-16-100, -102, -104, and -106 did not intersect anomalous radioactivity associated with uranium, but strong alteration was intersected in each hole akin to the styles intersected in holes RK-16-98 and -108.  This intense alteration zone remains open in all directions.

Lastly, drill holes RK-16-99 and -101 were completed 1.2 km and 1.0 km west-southwest of the previously described alteration zone. Both holes were drilled at angled orientations (-70° inclination) to the northwest (320° azimuth), and intersected basement lithologies immediately below Quaternary glacial overburden that consisted largely of orthogneiss. The VTEM conductor targeted in both holes and was marked by a strongly graphitic brittle deformation zone. No anomalous radioactivity was intersected in either hole.

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.

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 preparation of a pre-feasibility study 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, 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: A2 Mineralized Shear Long Section (CNW Group/NexGen Energy Ltd.)". Image available at: http://photos.newswire.ca/images/download/20161102_C7220_PHOTO_EN_809727.jpg

Image with caption: "Figure 2: Schematic Longitudinal Section of the Arrow Deposit and the Mineralized Area to the SW (CNW Group/NexGen Energy Ltd.)". Image available at: http://photos.newswire.ca/images/download/20161102_C7220_PHOTO_EN_809729.jpg

Image with caption: "Figure 3: Arrow Drill Hole Locations (CNW Group/NexGen Energy Ltd.)". Image available at: http://photos.newswire.ca/images/download/20161102_C7220_PHOTO_EN_809731.jpg

Image with caption: "Figure 4: Regional Drill Hole Locations (CNW Group/NexGen Energy Ltd.)". Image available at: http://photos.newswire.ca/images/download/20161102_C7220_PHOTO_EN_809733.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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