NexGen Announces Best Hole to Date (RK-24-222) and High-Grade Expansion at Patterson Corridor East Concluding a Successful 2024 Drilling Program
NexGen Announces Best Hole to Date (RK-24-222) and High-Grade Expansion at Patterson
Corridor East Concluding a Successful 2024 Drilling Program
• NexGen’s 2024 exploration campaign delivered a new discovery on Rook I at Patterson
Corridor East (“PCE”) 3.5km east of Arrow.
• Subsequent drilling has materially expanded the mineralized zone to 600 m strike length
and 600 m vertical extent with 19 of 30 holes intersecting mineralization including 10
holes with multiple intervals >10,000 cps.
• Today’s announcement highlights the best hole to date at PCE (RK-24-222) returns
17.0 m wide vein with multiple high intensity (>61,000 cps) occurrences.
• In 2024, PCE is the largest drill program in the Athabasca Basin by any Company at
34,000 meters (m).
Vancouver, BC, November 12, 2024 – NexGen Energy Ltd. ("NexGen" or the "Company")
(TSX: NXE) (NYSE: NXE) (ASX: NXG) is proud to announce the completion of its 2024 drilling
campaign at Patterson Corridor East (PCE) that included more than 34,000 m across a total of 46
drillholes. Upon initial discovery of intense uranium mineralization at PCE (see March 11 News
Release), the Company directed all drilling activity to focus exclusively on PCE, whereby 19 of 30
holes intersected mineralization. Bold and systematic spacing of drillhole intercepts have quickly
grown the discovery from a single hole to a broad and continuous new uranium discovery. Real-
time evaluation of results throughout the duration of the program focused on determining the
overall outer extents of the mineralized zone and in parallel, precisely targeting high-grade sub-
domains (Figures 1 and 2, Table 1).
In late October, a high-grade portion has presented itself within the overall mineralized zone with
upgraded intensity of mineralization in the now best hole to date, RK-24-222 (Figure 3). A 17.0 m
wide vein with multiple occurrences of off-scale (>61,000 cps) mineralization (Table1, Figure 3).
In addition, RK-24-220 and -223 intersected strong mineralization up to 41,000 cps and 40,000
cps, respectively including multiple intercepts of >10,000 cps. System strength is confirmed by
these zones characterized by semi-massive to massive replacement by uraninite. A high-grade
sub-domain of the mineralized footprint now covers 100 m of strike and 170 m of depth extent
with potential growth in all directions (Figure 2). The high-grade intersection in RK-24-222
represents the fifth drillhole at PCE to return off-scale (>61,000 cps) mineralization, joining
previous significant intersections in RK-24-183, -197, -202, and -207.
Leigh Curyer, Chief Executive Officer, commented: “ This focused effort has elevated the
materiality of PCE and today’s results highlight the increasing potential of the PCE system with
RK-24-222. With 600 m of strike length and 600 m of depth extent, this new zone located entirely
within competent basement rock only 3.5 km from the flagship world-class Arrow deposit has
emerged as a compelling and prospective addition to NexGen’s dominant portfolio in the south
western section of the Athabasca Basin.
NexGen's disciplined dual focus on the advancement of the Rook I Project and the expanded
exploration at PCE demonstrates the Company’s commitment to unlocking the full potential of this
major uranium district at a time where the need for clean affordable safe baseload energy has
never been more evident. With the world’s leading tech companies all committing to nuclear
power in recent month’s the outlook is incredibly exciting in the nuclear fuel space.”
Assays from disclosed intersections are expected in Q4 2024 and Q1 2025, with reporting to
follow. Exploration activity will resume in January 2025 with planning underway for a significant
drill program at PCE where the prospectivity for material growth is clearly evident.
Figure 1: Map view of PCE target area with the mineralized footprint wireframe shown in red; as of November 11, 2024
Figure 2: Schematic long section comparison from mid-summer 2024 to November 2024 of mineralized footprint at
PCE; additional drilling has maintained internal continuity with modest expansion in most directions
Figure 3: Core photo from RK-24-222; high-grade mineralization is hosted near continuously within an overall vein width
of 17.0 m from 604.5 to 621.5 m with a secondary vein below from 623.0 to 626.0 m; yellow outlines >1,000 cps while
red outlines >10,000 cps
Figure 4: RK-24-222 close-up of off-scale (>61,000 cps) massive replacement by uraninite haloed by hematite at 607.4
m
Figure 5: RK-24-222 semi-massive replacement by uraninite accompanied by argillization and hematite at 618.5 m, max
peak of >61,000 cps
Table 1: 2024 Spectrometer results since previous release on August 8, 2024
Drillhole
Unconformity
Depth (m)
Handheld Spectrometer Results (RS-125)
Hole ID Azimuth Dip Total
Depth (m)
From
(m) To (m) Width
(m) CPS Range
RK-24-208 310 -70 756 104.3 435 435.5 0.5 <500
435.5 436 0.5 <500 - 710
522 522.5 0.5 <500
523 523.5 0.5 <500
655 655.5 0.5 <500 - 750
655.5 656 0.5 <500
657.5 658 0.5 <500
658.5 659 0.5 <500
665.5 666 0.5 <500
666 666.5 0.5 <500 - 610
669.5 670.5 1 <500
670.5 671 0.5 560 - 950
671 671.5 0.5 1400 - 3560
673 673.5 0.5 <500 - 690
673.5 674 0.5 500 - 1140
674 675 1 <500
680 681 1 <500
685.5 686 0.5 <500 - 600
686.5 687 0.5 600 - 800
687 687.5 0.5 900 - 3000
687.5 688 0.5 <500 - 3000
689 689.5 0.5 <500 - 500
689.5 690 0.5 1300 - 5700
690 690.5 0.5 <500 - 2400
690.5 691 0.5 <500
691.5 692 0.5 <500 - 1800
692 692.5 0.5 <500 - 1600
692.5 693 0.5 <500
693 693.5 0.5 <500 - 1300
693.5 694 0.5 <500 - 500
694 694.5 0.5 <500 - 610
694.5 695 0.5 <500 - 600
695 695.5 0.5 550 - 1500
695.5 696 0.5 <500 - 3500
696 696.5 0.5 <500 - 810
697.5 698.5 1 <500
RK-24-209 310 -70 840 110.7 395 396 1 <500
627.5 628 0.5 <500 - 510
695 695.5 0.5 <500
759 759.5 0.5 <500 - 600
RK-24-210 310 -70 1095 102.4 639 639.5 0.5 <500
639.5 640 0.5 <500 - 510
640 640.5 0.5 <500
854 854.5 0.5 <500 - 700
854.5 855 0.5 <500
855.5 856 0.5 <500 - 1600
856 856.5 0.5 <500 - 1800
857.5 858 0.5 <500
858 858.5 0.5 <500 - 1600
862 862.5 0.5 <500 - 950
863.5 864 0.5 <500 - 700
869 869.5 0.5 <500 - 600
869.5 870 0.5 <500 - 500
874.5 875 0.5 <500 - 550
875.5 876 0.5 <500 - 3800
876 876.5 0.5 2700 - 6500
876.5 877 0.5 <500 - 1100
877 879 2 <500
879 879.5 0.5 <500 - 1200
879.5 880 0.5 <500 - 700
880 880.5 0.5 <500 - 750
880.5 881 0.5 600 - 1200
881 881.5 0.5 <500 - 600
881.5 882 0.5 <500 - 900
882 882.5 0.5 <500 - 1500
882.5 883 0.5 800 - 3400
883 883.5 0.5 <500 - 520
884.5 885 0.5 <500
885.5 886 0.5 <500 - 600
886 886.5 0.5 <500 - 1100
886.5 887 0.5 <500 - 1600
888 888.5 0.5 <500
888.5 889 0.5 <500 - 900
915.5 916.5 1 <500
920 920.5 0.5 <500 - 500
921 921.5 0.5 <500 - 700
921.5 922 0.5 <500
RK-24-211 310 -70 1302 103.1 776.5 777 0.5 <500
784 784.5 0.5 <500
1116.5 1117 0.5 <500
RK-24-212 315 -70 137 121 No Significant Intersections
RK-24-213 310 -70 936 87 No Significant Intersections
RK-24-214 310 -70 989 111.6 463 463.5 0.5 <500
466.5 467 0.5 <500
859.5 860 0.5 <500
862.5 863.5 1 <500
863.5 864 0.5 <500 - 950
865 865.5 0.5 <500
865.5 866 0.5 <500 - 540
866 866.5 0.5 <500 - 1400
867.5 868 0.5 <500
868 868.5 0.5 <500 - 650
868.5 869 0.5 <500 - 2200
869.5 870 0.5 <500
RK-24-215 310 -70 840 114.8 542 542.5 0.5 600 - 1300
542.5 543 0.5 2200 - 3200
543 543.5 0.5 6000 - 11000
543.5 544 0.5 <500 - 5000
544 544.5 0.5 <500 - 700
544.5 545 0.5 600 - 3500
545 545.5 0.5 500 - 1800
545.5 546 0.5 <500 - 700
546 546.5 0.5 <500 - 1400
546.5 547 0.5 <500 - 1150
547 547.5 0.5 <500
551.5 552 0.5 <500 - 1700
552 553.5 1.5 <500
564.5 565 0.5 <500 - 700
570 570.5 0.5 <500
570.5 571 0.5 <500 - 800
571 571.5 0.5 <500
571.5 572 0.5 <500 - 600
572 572.5 0.5 <500
583.5 584 0.5 <500
584.5 585 0.5 <500
585 585.5 0.5 600 - 1500
585.5 586 0.5 <500 - 550
586 586.5 0.5 <500 - 700
586.5 587 0.5 <500 - 800
587 588 1 <500
588 588.5 0.5 600 - 2000
588.5 589 0.5 700 - 2100
589 589.5 0.5 <500 - 1300
589.5 590 0.5 1200 - 1500
590.5 591 0.5 <500
600 600.5 0.5 <500 - 500
604.5 605 0.5 <500
608.5 609 0.5 <500
609 609.5 0.5 800 - 2850
609.5 610 0.5 <500
610 610.5 0.5 <500 - 850
621.5 622 0.5 <500 - 1500
622 622.5 0.5 <500 - 700
643 643.5 0.5 <500
646 646.5 0.5 <500 - 700
646.5 647 0.5 <500 - 1300
647 647.5 0.5 <500 - 2500
647.5 648 0.5 <500 - 700
648 649 1 <500
657 657.5 0.5 <500 - 1200
658 658.5 0.5 <500 - 500
658.5 659 0.5 <500 - 500
659 659.5 0.5 <500 - 1950
665.5 666 0.5 <500 - 600
681 681.5 0.5 <500 - 900
681.5 682 0.5 <500 - 850
RK-24-216 310 -70 1071 99.7 787 787.5 0.5 <500 - 600
787.5 788 0.5 1100 - 3700