NexGen 2021 Drilling Assay Results Confirm Uranium Mineralization Below Arrow At Depth and Commencement of 2022 Regional Exploration Program
NexGen 2021 Drilling Assay Results Confirm Uranium Mineralization Below Arrow At
Depth and Commencement of 2022 Regional Exploration Program
Vancouver, BC, July 28, 2022 - NexGen Energy Ltd. ("NexGen" or the "Company") (TSX: NXE) (NYSE:
NXE) (ASX: NXG) is pleased to announce drill assays from 2021 confirm discovery of a uranium mineralized
zone below the known Arrow Deposit and at Camp East:
• Below Arrow – multiple intersections of uranium mineralization were made significantly below
Arrow, including 0.10% U3O8 over 7.0 m in AR-21-268 from 1128 m to 1135 m down hole;
• Camp East – uranium concentration of 0.10% U3O8 in RK-21-140 from 166 m to 167 m down hole
in association with brittle structure and hydrothermal alteration.
Further, NexGen has commenced 2022 drilling focused on regional exploration targets at the 100% owned
Rook I project (the "Project"); and an extensive geophysical program over high priority areas of NexGen’s
mineral tenure in the southwest Athabasca Basin, Saskatchewan.
Leigh Curyer, Chief Executive Officer, commented: “ The intersection of mineralization below the known
Arrow Deposit and along trend at C amp East highlights the extent and potential for additional significant
discoveries at Rook I. The geology team led by Grant Greenwood are well positioned for the 2022 drilling
season which incorporates an extensive regional geophysical survey as a foundation for drilling in 2023 and
beyond.”
Grant Greenwood, Vice President, Exploration, commented: “ The 2021 exploration drilling successfully
intersected uranium mineralization. In addition to mineralization, these encouraging 2021 exploration
results share alteration and structural similarities to those intersected in the discovery hole at Arrow (AR -
14-01 or RK-14-21). NexGen is poised to advance high priority targets on the Rook I property in a systematic
fashion from Arrow proximal outwards. The geophysical survey plans are strategic initiatives in developing
highly prospective conductors in greenfield areas of the well situated NexGen mineral tenure in the
emerging southwest Athabasca Basin uranium district.”
2022 Drilling
The Rook I project – home to the Arrow Deposit – hosts numerous, underexplored electromagnetic
conductors (conductors) and structural corridors. While development of the Arrow Deposit is progressing
optimally, NexGen’s 2022 exploration program will focus on these underexplored targets towards making
additional material discoveries. The program will target high priority areas (Figure 1 ) and build off the
positive 2021 drilling results that intersected brittle structural disturbance and hydrothermal alteration on
multiple conductors.
This drill program – testing six (6) conductive trends – is designed to evaluate prospective targets
systematically with aggressive step-outs along high priority conductors.
Drilling targets areas (from West to East):
• Patterson Corridor (PLC) – Systematic testing along trend of Arrow, as well as at Camp East where
2021 drilling intersected anomalous radioactivity. This fertile trend has a strike length of
approximately 9 km on the Rook I property and remains highly prospective for further investigation.
• Mirror – Testing location with conductive response variation along the edge of a gravity low. The
Mirror conductor is parallel immediately to the east of the Arrow conductor and of high priority.
• PLC East – Tests of segmented conductive responses on edges of gravity lows. PLC East is located
proximal to the Arrow conductor with similar geometry.
• Derkson West – Follow-up of positive results from 2021 by testing along strike in both directions.
Similar geometry to the PLC with a northeast -southwest trending conductor along magnetic
gradient, coincident with local gravity lows.
• Derkson – Systematic drilling alo ng prospective conductors in gravity lows. This high priority
portion of the Derkson corridor for testing in 2022 contains discrete and strong conductive
responses with interpreted structural disruptions.
• Derkson East – Targeting significant flexure of an underexplored conductor within a gravity low
interpreted as localized structural disruption.
All target areas exhibit similar geophysical characteristics to Arrow, including strong conductive signatures
with numerous off -sets coincident with discrete gravi ty lows and steep magnetic gradients. Structural
interpretations across the property indicate several conductors lie along significant rheological/lithological
contrasts interpreted to possess structural conditions favourable for localized uranium minerali zation.
Additionally, analysis of previous drilling has also revealed several target areas containing prospective
alteration and geochemical signatures indicative of uranium bearing systems. The 2022 summer program
incorporates 3 rigs for 12,000 meters in total.
These prospective signatures are present within the 2021 Exploration drilling results, in which 18 holes were
completed for a total of 10,849.04 m (Figure 2). The program tested prospective electromagnetic
conductors near Arrow with 6,400.31 m and a further 4,448.73 m tested significantly below the current
outline of the Arrow Deposit resource (Figure 3). Brittle structural disturbance and hydrothermal alteration
were intersected in all targeted areas, including anomalous uranium concentration below Arrow in drill hole
AR-21-266 and -268, and at Camp East in drill hole RK-21-140 (see assay results in Table 1).
Strategic Geophysics
Covering prospective conductive trends on NexGen’s SW1, SW2, and SW3 properties in the southwest
Athabasca Basin (Figure 4), this extensive geophysic al program is designed to gain further resolution on
conductors and identify stacked geophysical anomalies for greenfields exploration drilling.
SW1 (Figure 5) – Ground electromagnetic survey along approximately 9 km conductor to further refine
prospective targets for follow-up drilling.
Continuity of the conductor suggests a well -developed structural trend with several breaks and jogs . The
ground electromagnetic survey is designed to focus high -resolution geophysical data over these
prospective features of the SW1 property and highlight specific areas for follow-up drilling.
SW2 (Figure 6) – Ground gravity survey to generate and prioritize targets by identifying stacked anomalies.
Through historic magnetic and electromagnetic surveys, t he SW2 property is highlighted by numerous
broad prospective trends. The addition of a ground gravity survey in the central portion of the property is
planned for focussing exploration attention to specific locations along these trends where geophysical
anomalies align for follow-up drilling.
SW3 (Figure 7) – Ground IP/Resistivity survey to generate and prioritize targets along approximately 6 km
of prospective conductor that straddles the Athabasca Basin boundary, south of Cameco’s Centennial
Deposit.
This ground IP/resistivity is designed to provide resolution over this ideally situated conductor at the edge
of the Athabasca Basin to optimize future drilling and advance the SW3 property towards discovery.
Figure 1: 2022 Exploration Target Areas
Figure 2: 2021 Exploration Drilling
Figure 3: 2021 Below Arrow Exploration – Drill holes Completed – Plan View (left)
and Cross Section looking Northeast (right)
Figure 4: NexGen’s Mineral Disposition Tenure in Southwest Athabasca Basin
Figure 5: 2022 Geophysical Program Planned for SW1
Figure 6: 2022 Geophysical Program Planned for SW2