VANCOUVER, Oct. 18, 2017 /CNW/ - NexGen Energy Ltd. ("NexGen" or the "Company")
(TSX:NXE, NYSEMKT:NXE) is pleased to report radioactivity results for sixteen holes from South Arrow as part of our on-going
summer drilling program on our 100% owned, Rook I property, in the Athabasca Basin, Saskatchewan.
South Arrow
Aggressive step out drilling at the recently discovered South Arrow has intersected significant off-scale
radioactivity in multiple holes, and has extended the strike length and vertical extent of high grade
mineralization to 240 m and 185 m, respectively. High grade uranium mineralization occurs as accumulations of
semi-massive to massive pitchblende similar to that seen in the High Grade Domains of the Arrow Deposit.
- AR-17-166c1 (250 m up-dip and southwest of discovery hole AR-17-151c1) intersected 41.0 m of total composite
mineralization including 6.2 m of total composite off-scale radioactivity (>10,000 to >61,000 cps) within a
54.0 m section (182.5 to 236.5 m). This is the shallowest significant off-scale mineralization encountered anywhere on the
Rook I property.
- AR-17-160c1 (203 m up-dip and southwest of discovery hole AR-17-151c1) intersected 30.0 m of total composite
mineralization including 3.5 m of total composite off-scale radioactivity (>10,000 to >61,000 cps) within a
157.0 m section (192.0 to 349.0 m).
- AR-17-163c1 (190 m up-dip and southwest of discovery hole AR-17-151c1) intersected 23.0 m of total composite
mineralization including 2.2 m of total composite off-scale radioactivity (>10,000 to >61,000 cps) within a
109.5 m section (162.5 to 272.0 m).
Two diamond drill rigs remain in operation at South Arrow as the Company continues to aggressively and systematically test
this encouraging new zone. A total of eighteen assays remain pending.
A South Arrow longitudinal section and plan map with drill hole locations are shown in Figures 1 and 2.
Garrett Ainsworth, Vice-President, Exploration and Development, commented: "Drill hole
AR-17-160c1 represents a highly successful 203 m step out to the southwest from the initial discovery hole at South
Arrow. The ability to hit high grade mineralization on an aggressive step out of this distance has been a common
characteristic of the Arrow Deposit, which is located 400 m to the north of South Arrow on a separate conductor. South Arrow
contains a broad alteration halo that surrounds multiple parallel stacked mineralized zones, which are two important features
observed at the Arrow Deposit. Hole AR-17-166c1 at South Arrow has encountered the shallowest significant high grade
mineralization anywhere on the Rook I property to date."
Leigh Curyer, Chief Executive Officer, commented: "The scale of these South Arrow results are very exciting considering its
very early in the discovery stage. They are unprecedented on the Rook I property and highlight the vast discovery potential of
our dominant portfolio in the Southwest Athabasca Basin. An additional 5,000m of drilling has
been allocated to South Arrow before the conclusion of the 2017 drilling program."
Table 1: South Arrow Drill Hole Data
|
Drill Hole
|
Athabasca
Group -
Basement
Unconformity
Depth (m)
|
Handheld Scintillometer Results (RS-120)
|
Hole ID
|
Azimuth
(From
Surface)
|
Dip
(From
Surface)
|
Total
Depth
(m)
|
From (m)
|
To (m)
|
Width (m)
|
CPS Range
|
AR-17-151c3
|
327
|
-70
|
405.00
|
103.30
|
280.5
|
281.5
|
1
|
<500 - 18000
|
|
|
|
|
|
290.5
|
292.5
|
2
|
<500 - 980
|
AR-17-152c1
|
327
|
-70
|
456.50
|
96.40
|
294.5
|
296
|
1.5
|
<500 - 1000
|
|
|
|
|
|
302.5
|
303
|
0.5
|
<500 - 810
|
AR-17-152c2
|
327
|
-70
|
540.50
|
96.40
|
333
|
337.5
|
4.5
|
<500 - 3300
|
|
|
|
|
|
341
|
342
|
1
|
<500 - 860
|
|
|
|
|
|
387.5
|
388
|
0.5
|
<500 - 520
|
|
|
|
|
|
405.5
|
406
|
0.5
|
<500 - 520
|
|
|
|
|
|
470.5
|
471
|
0.5
|
<500 - 540
|
|
|
|
|
|
481
|
482
|
1
|
<500 - 2200
|
AR-17-153c1
|
327
|
-67
|
546.00
|
97.80
|
373
|
373.5
|
0.5
|
500 - 3000
|
|
|
|
|
|
388.5
|
389
|
0.5
|
<500 - 730
|
|
|
|
|
|
391.5
|
393.5
|
2
|
<500 - 1100
|
|
|
|
|
|
414
|
417
|
3
|
<500 - 21000
|
|
|
|
|
|
454.5
|
455
|
0.5
|
<500 - 750
|
AR-17-153c2
|
327
|
-67
|
558.50
|
97.80
|
411
|
420
|
9
|
<500 - 6300
|
AR-17-157c1
|
327
|
-70
|
597.50
|
N/A
|
385
|
385.5
|
0.5
|
<500 - 530
|
|
|
|
|
|
388.5
|
389
|
0.5
|
<500 - 1300
|
|
|
|
|
|
396
|
396.5
|
0.5
|
<500 - 540
|
|
|
|
|
|
488
|
488.5
|
0.5
|
<500 - 530
|
|
|
|
|
|
528
|
528.5
|
0.5
|
<500 - 570
|
|
|
|
|
|
531.5
|
532
|
0.5
|
<500 - 800
|
AR-17-157c2
|
327
|
-70
|
639.00
|
N/A
|
400.5
|
402
|
1.5
|
<500 - 900
|
|
|
|
|
|
535.5
|
536
|
0.5
|
<500 - 700
|
|
|
|
|
|
543
|
544.5
|
1.5
|
<500 - 1800
|
|
|
|
|
|
547
|
548
|
1
|
<500 - 780
|
|
|
|
|
|
561.5
|
564.5
|
3
|
<500 - 680
|
|
|
|
|
|
577.5
|
579
|
1.5
|
<500 - 2690
|
AR-17-158c1
|
327
|
-70
|
600.00
|
N/A
|
438.5
|
439
|
0.5
|
<500 - 610
|
|
|
|
|
|
445
|
445.5
|
0.5
|
<500 - 950
|
|
|
|
|
|
452.5
|
460.5
|
8
|
<500 - 1750
|
AR-17-158c2
|
327
|
-70
|
579.50
|
N/A
|
486.5
|
488.5
|
2
|
<500 - 1450
|
|
|
|
|
|
496
|
497
|
1
|
<500 - 800
|
|
|
|
|
|
522.5
|
523
|
0.5
|
<500 - 600
|
AR-17-160c1
|
327
|
-68
|
393.00
|
97.60
|
192
|
211
|
19
|
<500 - 48000
|
|
|
|
|
|
223.5
|
233.5
|
10
|
<500 - >61000
|
|
|
|
|
|
241.5
|
242
|
0.5
|
<500 - 530
|
|
|
|
|
|
348.5
|
349
|
0.5
|
<500 - 3600
|
AR-17-162c1
|
315
|
-68
|
442.50
|
96.80
|
145
|
145.5
|
0.5
|
<500 - 1100
|
|
|
|
|
|
156
|
162
|
6
|
<500 - 56000
|
|
|
|
|
|
178.5
|
179
|
0.5
|
<500 - 970
|
|
|
|
|
|
199
|
200
|
1
|
<500 - 2200
|
|
|
|
|
|
254.5
|
256.5
|
2
|
<500 - 15000
|
AR-17-163c1
|
315
|
-68
|
438.00
|
96.15
|
162.5
|
163
|
0.5
|
<500 - 810
|
|
|
|
|
|
241.5
|
262.5
|
21
|
<500 - >61000
|
|
|
|
|
|
270.5
|
272
|
1.5
|
<500 - 4650
|
AR-17-165c1
|
315
|
-80
|
249.00
|
91.40
|
116
|
118
|
2
|
<500 - 5800
|
AR-17-166c1
|
310
|
-70
|
303.00
|
N/A
|
182.5
|
200.5
|
18
|
<500 - 42200
|
|
|
|
|
|
213.5
|
236.5
|
23
|
<500 - >61000
|
AR-17-168c1
|
315
|
-68
|
471.00
|
N/A
|
315
|
316.5
|
1.5
|
<500 - 2700
|
AR-17-169c1
|
315
|
-68
|
345.00
|
N/A
|
134.5
|
135
|
0.5
|
<500 - 630
|
|
|
|
|
|
138.5
|
144
|
5.5
|
<500 - >61000
|
|
|
|
|
|
152
|
153.5
|
1.5
|
<500 - 15000
|
Parameters:
|
|
• Maximum internal dilution 2.00 m downhole
|
• All depths and intervals are metres downhole, true thicknesses are yet to
be determined
|
• "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
|
• Directional drilling has often resulted in mineralization intersected at
a more favourable and shallower dip
|
South Arrow Drilling
AR-17-151c3
Hole AR-17-151c3 was a directional hole that departed pilot hole AR-17-151c1 at a depth of 123 m. It was designed to test the
South Arrow zone 30 m above AR-17-151c1. Directional drilling was initiated at 144 m and the mineralized horizons were
intersected at an inclination of -61°. Basement lithologies were intersected from the top of hole and dominantly consisted of
semi-pelitic gneiss and orthogneiss of variable composition. Several broad deformation zones were encountered throughout.
Extensive zones of hydrothermal alteration were also intersected which generally consisted of replacement- and hydrothermal
breccia-style clay, chlorite and silicification. The hole intersected visible disseminated, and foliation-controlled pitchblende
mineralization in close association with deformation and hydrothermal alteration. A total composite mineralization of 3.0 m
including 0.15 m of off-scale radioactivity (>10,000 to 18,000 cps) was intersected within a 12.0 m section (280.5 to 292.5 m)
before the hole was terminated at 405 m.
AR-17-152c1
Hole AR-17-152c1 was a directional hole collared from surface at an angled orientation (-70°) to the northwest (327° azimuth).
It was designed to test the South Arrow zone 40 m southwest of AR-17-151c1. Directional drilling was initiated at 132 m and the
mineralized horizons were intersected at an inclination of -58°. The hole intersected Athabasca Group sandstones between 91.3 m
and the unconformity at 96.4 m. Basement lithologies consisted of semi-pelitic gneiss and orthogneiss of variable
composition. Several broad deformation zones were encountered throughout. Extensive zones of hydrothermal alteration were also
intersected which generally consisted of replacement- and hydrothermal breccia-style clay, chlorite and silicification. The hole
intersected disseminated and fracture-hosted pitchblende mineralization in close association with deformation and hydrothermal
alteration. A total composite mineralization of 2.0 m was intersected between 294.5 m and 303.0 m. The hole was terminated at
456.5 m.
AR-17-152c2
Hole AR-17-152c2 was a directional hole that departed pilot hole AR-17-152c1 at 148 m. It was designed to test the South Arrow
zone 50 m below AR-17-152c1. Directional drilling was initiated at 159 m and the mineralized horizons were intersected at an
inclination of -68°. Basement lithologies were intersected from the top of the hole that included semi-pelitic gneiss and
orthogneiss of variable composition. Several broad deformation zones were encountered throughout. Extensive zones of hydrothermal
alteration were also intersected which generally consisted of replacement- and hydrothermal breccia-style clay, chlorite and
silicification. The hole intersected disseminated and fracture-hosted pitchblende mineralization in close association with
deformation and hydrothermal alteration. A total composite mineralization of 8.0 m was intersected within a 149.0 m section
(333.0 to 482.0 m) before the hole was terminated at 540.5 m.
AR-17-153c1
Hole AR-17-153c1 was a directional hole collared from surface at an angled orientation (-67°) to the northwest (327° azimuth).
It was designed to test South Arrow zone 50 m down-dip from AR-17-151c2. Directional drilling was initiated at 126 m and the
mineralized horizons were intersected at an inclination of -61°. The hole intersected Athabasca Group sandstones between 94.9 m
and the unconformity at 97.8 m. Basement lithologies consisted of semi-pelitic gneiss and orthogneiss of variable
composition. Several broad deformation zones were encountered throughout. Extensive zones of hydrothermal alteration were also
intersected which generally consisted of replacement- and hydrothermal breccia-style clay, chlorite and silicification. The hole
intersected visible disseminated, fracture-hosted, foliation-controlled, and mineral replacement style pitchblende mineralization
in close association with deformation and hydrothermal alteration. A total composite mineralization of 6.5 m including 0.55 m of
off-scale radioactivity (>10,000 to 21,000 cps) was intersected within an 82.0 m section (373.0 to 455.0 m). The hole was
terminated at 546 m.
AR-17-153c2
Hole AR-17-153c2 was a directional hole that departed pilot hole AR-17-152c1 at 294 m. Directional drilling was initiated at
126 m and the mineralized horizons were intersected at an inclination of -69°. It was designed to test the South Arrow zone 50 m
down-dip of AR-17-153c1. Basement lithologies were intersected from the top of the hole that included semi-pelitic gneiss and
orthogneiss of variable composition. Several broad deformation zones were encountered throughout. Extensive zones of hydrothermal
alteration were also intersected which generally consisted of replacement- and hydrothermal breccia-style clay, chlorite and
silicification. The hole intersected disseminated and fracture-hosted pitchblende mineralization in close association with
deformation and hydrothermal alteration. Continuous mineralization of 9.0 m was intersected between 411 and 420 m before the hole
was terminated at 558.5 m.
AR-17-157c1
Hole AR-17-157c1 was a directional hole collared from surface at an angled orientation (-70°) to the northwest (327° azimuth).
It was designed to test the South Arrow zone 50 m down-dip of AR-17-152c2. Directional drilling was initiated at 198 m and the
mineralized horizons were intersected at an inclination of -66°. The hole intersected Devonian-aged sandstones between 87.9 m and
93.7 m. No Athabasca Group sandstones were encountered. Basement lithologies consisted of semi-pelitic gneiss and orthogneiss of
variable composition. Several broad deformation zones were encountered throughout. Extensive zones of hydrothermal alteration
were also intersected which generally consisted of replacement- and hydrothermal breccia-style clay, chlorite and silicification.
The hole intersected disseminated and fracture-hosted pitchblende mineralization in close association with deformation and
hydrothermal alteration. A total composite mineralization of 3.0 m was intersected within a 147.0 m section (385.0 to 532.0 m)
before the hole was terminated at 597.5 m.
AR-17-157c2
Hole AR-17-157c2 was a directional hole that departed pilot hole AR-17-157c1 at 203 m. It was designed to test the South Arrow
zone down-dip of AR-17-157c1. Directional drilling was initiated at 264 m and the mineralized horizons were intersected at an
inclination of -70°. Basement lithologies were intersected from the top of the hole that included semi-pelitic gneiss and
orthogneiss of variable composition. Several broad deformation zones were encountered throughout. Extensive zones of hydrothermal
alteration were also intersected which generally consisted of replacement- and hydrothermal breccia-style clay, chlorite and
silicification. The hole intersected disseminated and fracture-hosted pitchblende mineralization in close association with
deformation and hydrothermal alteration. A total composite mineralization of 9.0 m was intersected within a 178.5 m section
(400.5 to 579.0 m) before the hole was terminated at 639.0 m.
AR-17-158c1
Hole AR-17-158c1 was a directional hole collared from surface at an angled orientation (-70°) to the northwest (327° azimuth).
It was designed to test the South Arrow zone 50 m down-dip and northeast of AR-17-153c2. Directional drilling was initiated at
150 m and the mineralized horizons were intersected at an inclination of -65°. The hole intersected Cretaceous-aged mudstone
between 71.8 m and 90.8 m. Basement lithologies consisted of semi-pelitic gneiss and orthogneiss of variable composition.
Several broad deformation zones were encountered throughout. Extensive zones of hydrothermal alteration were also intersected
which generally consisted of replacement- and hydrothermal breccia-style clay, chlorite and silicification. The hole intersected
disseminated and fracture-hosted pitchblende mineralization in close association with deformation and hydrothermal alteration. A
total composite mineralization of 9.0 m was intersected within a 22.0 m section (438.5.0 to 460.5 m) before the hole was
terminated at 600.0 m.
AR-17-158c2
Hole AR-17-158c2 was a directional hole that departed pilot hole AR-17-158c1 at 173 m. It was designed to test the South Arrow
discovery 50 m down-dip of AR-17-158c1. Directional drilling was initiated at 189 m and the mineralized horizons were intersected
at an inclination of -72°. Basement lithologies were intersected from the top of the hole that included semi-pelitic gneiss and
orthogneiss of variable composition. Several broad deformation zones were encountered throughout. Extensive zones of hydrothermal
alteration were also intersected which generally consisted of replacement- and hydrothermal breccia-style clay, chlorite and
silicification. The hole intersected disseminated and fracture-hosted pitchblende mineralization in close association with
deformation and hydrothermal alteration. A total composite mineralization of 3.5 m was intersected within a 36.5 m section (486.5
to 523.0 m) before the hole was terminated at 579.5 m.
AR-17-160c1
Hole AR-17-160c1 was collared from surface at an angled orientation (-68°) to the northwest (327° azimuth). It was designed to
test the South Arrow zone 190 m southwest of AR-17-151c3. The hole intersected Athabasca Group sandstones between 92.7 m and the
unconformity at 97.6 m. Basement lithologies consisted of semi-pelitic gneiss and orthogneiss of variable composition.
Several broad deformation zones were encountered throughout. Extensive zones of hydrothermal alteration were also intersected
which generally consisted of replacement- and hydrothermal breccia-style clay, chlorite and silicification. The hole intersected
visible disseminated, vein-style, and semi-massive pitchblende mineralization in close association with deformation and
hydrothermal alteration. A total composite mineralization of 30.0 m including 3.5 m of off-scale radioactivity (>10,000 to
>61,000 cps) was intersected within a 157.0 m section (192.0 to 349.0 m) before the hole was terminated at 393.0 m.
AR-17-162c1
Hole AR-17-162c1 was collared from surface at an angled orientation (-68°) to the northwest (315° azimuth). It was designed to
test the South Arrow zone 40 m up-dip of AR-17-162c1. The hole intersected Athabasca Group sandstones between 96.0 m and the
unconformity at 96.9 m. Basement lithologies consisted of semi-pelitic gneiss and orthogneiss of variable composition. Several
broad deformation zones were encountered throughout. Extensive zones of hydrothermal alteration were also intersected which
generally consisted of replacement- and hydrothermal breccia-style clay, chlorite and silicification. The hole intersected
visible disseminated, vein-style, and semi-massive pitchblende mineralization in close association with deformation and
hydrothermal alteration. A total composite mineralization of 10.0 m including 0.85 m of off-scale radioactivity (>10,000 to
56,000 cps) was intersected within a 111.5 m section (145.0 to 256.5 m) before the hole was terminated at 442.5 m.
AR-17-163c1
Hole AR-17-163c1 was collared from surface at an angled orientation (-68°) to the northwest (315° azimuth). It was designed to
test the South Arrow zone 50 m down-dip of AR-17-160c1. The hole intersected Athabasca sandstone
between 92.25 m and the unconformity at 96.2 m. Basement lithologies consisted of semi-pelitic gneiss and orthogneiss of
variable composition. Several broad deformation zones were encountered throughout. Extensive zones of hydrothermal alteration
were also intersected which generally consisted of replacement- and hydrothermal breccia-style clay, chlorite and silicification.
The hole intersected visible disseminated, vein-style, and semi-massive pitchblende mineralization in close association with
deformation and hydrothermal alteration. A total composite mineralization of 23.0 m including 2.2 m of off-scale radioactivity
(>10,000 to >61,000 cps) was intersected within a 109.5 m section (162.5 to 272.0 m) before the hole was terminated at
438.0 m.
AR-17-165c1
Hole AR-17-165c1 was collared from surface at a near vertical orientation (-80°) to the northwest (315° azimuth). The primary
target was flat lying mineralization at the unconformity 55 m up-dip from AR-17-162c1. Basement-hosted mineralization was also
expected immediately below the unconformity. No Athabasca Group sandstones were intersected indicating that the unconformity has
been eroded at this location. Basement lithologies consisted of semi-pelitic gneiss and orthogneiss of variable composition.
Several broad deformation zones were encountered throughout. Extensive zones of hydrothermal alteration were also intersected
which generally consisted of replacement- and hydrothermal breccia-style clay, chlorite and silicification. The hole intersected
visible disseminated, and fracture-hosted pitchblende mineralization in close association with deformation and hydrothermal
alteration. A total composite mineralization of 2.0 m was intersected between 116.0 m and 118.0 m before the hole was terminated
at 249.5 m.
AR-17-166c1
Hole AR-17-166c1 was collared from surface at an angled orientation (-70°) to the northwest (310° azimuth). It was designed to
test the South Arrow zone 50 m southwest of AR-17-160c1. Directional drilling was initiated at 120 m and the mineralized zones
were intersected at an inclination of -75° The hole intersected basement lithologies beginning at 94.2 m which consisted of
semi-pelitic gneiss and orthogneiss of variable composition. Several broad deformation zones were encountered throughout.
Extensive zones of hydrothermal alteration were also intersected which generally consisted of replacement- and hydrothermal
breccia-style clay, chlorite and silicification. The hole intersected visible disseminated, vein-style, and semi-massive
pitchblende mineralization in close association with deformation and hydrothermal alteration. A total composite mineralization of
41.0 m including 6.2 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 54.0 m section (182.5
to 236.5 m) before the hole was terminated at 303.0 m.
AR-17-168c1
Hole AR-17-168c1 was collared from surface at an angled orientation (-68°) to the northwest (315° azimuth). It was designed to
test the South Arrow zone 50 m down-dip from of AR-17-163c2. Directional drilling was initiated at 99 m and the mineralized zone
was intersected at an inclination of -55° The hole intersected basement lithologies beginning at 84.4 m which consisted of
semi-pelitic gneiss and orthogneiss of variable composition. Several broad deformation zones were encountered throughout.
Extensive zones of hydrothermal alteration were also intersected which generally consisted of replacement- and hydrothermal
breccia-style clay, chlorite and silicification. The hole intersected visible disseminated mineralization in close association
with deformation and hydrothermal alteration. A total composite mineralization of 1.5 m was intersected beginning at 315.0 m
before the hole was terminated at 471 m.
AR-17-169c1
Hole AR-17-169c1 was collared from surface at an angled orientation (-68°) to the northwest (315° azimuth). It was designed to
test the South Arrow zone 50 m up-dip from of AR-17-160c1. The hole intersected basement lithologies beginning at 96.5 m which
consisted of semi-pelitic gneiss and orthogneiss of variable composition. Several broad deformation zones were encountered
throughout. Extensive zones of hydrothermal alteration were also intersected which generally consisted of replacement- and
hydrothermal breccia-style clay, chlorite and silicification. The hole intersected visible disseminated, vein-style, and
semi-massive pitchblende mineralization in close association with deformation and hydrothermal alteration. A total composite
mineralization of 7.5 m including 0.5 m of off-scale radioactivity (>10,000 to >61,000 cps) was intersected within a 19.0 m
section (134.5 to 153.5 m) before the hole was terminated at 345.0 m.
About NexGen
NexGen is a British Columbia corporation with a focus on the acquisition, exploration and
development of Canadian uranium projects. NexGen has a highly experienced team of uranium industry professionals with a
successful track record in the discovery of uranium deposits and in developing projects through discovery to production.
NexGen owns a portfolio of prospective uranium exploration assets in the Athabasca Basin,
Saskatchewan, Canada, including a 100% interest in Rook I, location of the Arrow Deposit in
February 2014, the Bow discovery in March 2015, the Harpoon discovery
in August 2016 and the South Arrow discovery in July 2017. The Arrow
deposit's updated mineral resource estimate with an effective date of December 20, 2016 was
released in March 2017, and comprised 179.5 M lbs U3O8 contained in 1.18 M tonnes grading 6.88%
U3O8 in the Indicated Mineral Resource category and an additional 122.1 M lbs U3O8 contained in 4.25 M tonnes grading 1.30% U3O8
in the Inferred Mineral Resource category.
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.
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 please refer to the technical report entitled
"Technical Report on the Preliminary Economic Assessment of the Arrow Deposit, Rook 1 Property, Province of Saskatchewan, Canada" dated effective September 1, 2017 (the "Rook 1
Technical Report") prepared by Jason J. Cox, David M. Robson,
Mark B. Mathisen, David A. Ross, Val
Coetzee and Mark Wittrup, 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.
U.S. investors are advised that while the terms "indicated resources" and "inferred resources" are recognized and required by
Canadian regulations, the U.S. Securities and Exchange Commission does not recognize these terms. U.S. investors are cautioned
not to assume that any part or all of the material in these categories will ever be converted into mineral reserves.
Forward-Looking Information
The information contained herein contains "forward-looking statements" within the meaning of the United States Private
Securities Litigation Reform Act of 1995 and "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. 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 connotation thereof.
Forward-looking information and statements are based on the then current expectations, beliefs, assumptions, estimates and
forecasts about NexGen's business and the industry and markets in which it operates. Forward-looking information and statements
are made based upon numerous assumptions, including among others, that the proposed transaction will be completed, the results of
planned exploration activities are as anticipated, the price of uranium, the cost of planned exploration activities, that
financing will be available if and when needed and on reasonable terms, that third party contractors, equipment, supplies and
governmental and other approvals required to conduct NexGen's planned exploration activities will be available on reasonable
terms and in a timely manner and that general business and economic conditions will not change in a material adverse 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 results, performances and achievements of NexGen to differ materially from any projections of results,
performances and achievements of NexGen 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 the availability of additional
financing, the risk that pending assay results will not confirm previously announced preliminary results, imprecision of mineral
resource estimates, the appeal of alternate sources of energy and sustained low uranium prices, aboriginal title and consultation
issues, exploration risks, reliance upon key management and other personnel, deficiencies in the Company's title to its
properties, uninsurable risks, failure to manage conflicts of interest, failure to obtain or maintain required permits and
licenses, changes in laws, regulations and policy, competition for resources and financing, and other factors discussed or
referred to in the Company's Annual Information Form dated March 31, 2017 under " Risk
Factors ".
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.
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