NGEx Minerals Ltd. (TSX: NGEX) (OTCQX: NGXXF) is pleased to announce additional drill results from its 100% owned Lunahuasi high-grade copper-gold-silver project in San Juan, Argentina. Assay results from four of the remaining eight drill holes of the Phase 3 drill program are presented below.

Highlights:

• Drillhole DPDH041 intersected:
  • 8.30m at 12.38% copper equivalent (“CuEq”) from 266.70m, plus:
  • 89.10m at 4.09% CuEq from 581.90m, including:
    • 38.10m at 7.07% CuEq from 605.40m
• Drillhole DPDH042 intersected:
  • 48.90m at 7.75% CuEq from 281.70m, including:
    • 12.55m at 19.05% CuEq from 292.25m, plus:
  • 2.30m at 23.82% CuEq from 509.10m
• Drillhole DPDH043 intersected:
  • 46.80m at 9.55% CuEq from 492.20m, including:
    • 15.80m at 19.08% CuEq from 492.20m, including:
      • 7.00m at 24.86% CuEq from 492.20m, and including:
      • 4.80m at 22.69% CuEq from 503.20m, and including:
      • 5.50m at 10.05% CuEq from 520.00m.

Wojtek Wodzicki, President and CEO, commented, “The drill results in this release confirm and extend the known zones of high-grade mineralization, improve our understanding of the associated porphyry system and have discovered new zones, all while expanding the boundaries of the Lunahuasi deposit. The 46.8m intersection at 9.55% CuEq in DPDH043 is particularly noteworthy and extends high-grade mineralization well to the north of previous drilling. We now have enough confidence in the size and shape of three of these zones to provide them with names – the Mars, Saturn and Jupiter zones. Each of these zones represents a significant volume of contiguous high-grade mineralization which we plan to further extend and define with the next phase of drilling.

Results to date indicate that these are just the first three of many additional zones that we have discovered in isolated drill intersections, and we are confident that additional closer spaced drilling will ultimately help to define them. With results from the final four holes of the program still to come and planning well underway for our fourth drill campaign, set to start in October, we are in a very strong position to continue increasing the value of this unique asset.”

Table 1: Significant Intersections

^{Copper equivalent (CuEq) for drill intersections is calculated based on US$3.00/lb Cu, US$1,500/oz Au and US$18/oz Ag, with 80% metallurgical recoveries assumed for all metals. The formula is: CuEq % = Cu % + (0.7292 * Au g/t) + (0.0088 * Ag g/t).}

^{Estimated true widths are rounded to the nearest metre for widths over 10m and to the nearest 0.1m for widths less than 10m, as this better reflects the precision of the estimates. True widths should be regarded as approximate as these are derived from an estimate that uses a preliminary interpretation of the geological model and are subject to change as more information becomes available. Intervals greater than 300m are interpreted as bulk disseminated and stockwork mineralization and drilled width is equal to estimated true width.}

DPDH040 was collared on a new platform at the western edge of the drill pattern and angled to the west at -46^o to explore the up-dip extension of the vein system. Several mineralized zones were intersected as shown in Table 1, all of which extend the deeper zones upwards and remain open to surface. For example, the intersection at 554.00m to 562.00m is 314m vertically above the intersection from 842.00m to 855.00m in hole DPDH039 and may be on the same structure. On a larger scale, the 133.30m interval at 2.10% CuEq from 523.00m correlates well with the 400.40m interval at 1.72% CuEq in hole DPDH039, over 300m below (News Release dated June 19, 2025).

Hole DPDH040 also intersected the far eastern edge of the porphyry system, starting at about 818m as indicated by the presence of porphyry veins and a transition indicated by the sequential copper analyses from enargite-dominated copper mineralization to chalcopyrite-dominated. The 359.30m interval from 818.00m to the end of the hole at 1,177.30m averaged 0.28% Cu and 0.12 g/t Au (0.40% CuEq) consistent with the distal part of the porphyry system. This interval is just over 400m north of the porphyry interval in DPDH027.

DPDH041 was collared from the same platform as DPDH018, 22, 28 and 34 and drilled towards the west at a dip of -56^o to test for a southern extension to the Saturn zone. The 89.10m intersection at 4.09% CuEq from 581.90m correlates well with the Saturn zone and is located 150m below and to the south of the interval in DPDH028 and 100m above and to the south of the interval in DPDH034, providing a significant expansion to the zone.

DPDH042 was drilled from a new platform on the eastern edge of the drill pattern and angled to the west at a dip of -48^o to test for both a northern extension to the Saturn zone and a southern extension to the Mars zone. The hole intersected a broad zone of very strong mineralization from 281.70m (48.9m at 7.75% CuEq), including a 12.55m section of 19.05% CuEq, which is interpreted as the southern continuation of the Mars zone structure. The intersection here is 100m south of the Mars zone intersection in DPDH032 (27.40m at 25.19% CuEq – see News Release dated March 13, 2025). The hole then continued to intersect a narrower, but high-grade intersection at 509.10m (12.20m at 9.36% CuEq, including 2.30m at 23.82% CuEq) which is interpreted to lie along the same structure as the Saturn zone 140m north of the key intersection in DPDH028. This interval includes a 0.90m sample at 68.0 g/t Au, consistent with the very high gold tenure of the Saturn zone.

DPDH043 was collared at the northern edge of the deposit from the same platform as DPDH038 and drilled at an azimuth of 316^o and a dip of -54^o to test the northern extent of the deposit. It intersected the interpreted continuation of the Mars zone at 198.40m with a broad zone (89.60m) at 2.42% CuEq including high-grade intervals of 3.00m at 14.29% CuEq from 202.00m and 10.60m at 5.78% CuEq from 257.80m. This intersection extends the Mars zone by 50m from DPDH038. The hole then went on to hit a much stronger zone at 492.20m (46.80m at 9.55% CuEq) which included several much higher-grade intervals as shown in Table 1 above. This interval is thought to represent the first intersection into a new high-grade zone and clearly indicates that the deposit is completely open to the north.

Discussion

With these latest results, we now have enough confidence in the location and continuity of the three initial zones discussed in earlier news releases to name them and begin designing drill holes specifically to understand their geometry and extent. These three zones have been named Jupiter, Saturn and Mars, and we believe that they represent the first group of what will ultimately become several distinct high-grade zones within the Lunahuasi deposit.

Jupiter is the initial high-grade zone discovered by hole DPDH002 – the first hole drilled into this part of the property. Mars is the shallow high-grade zone first discovered by hole DPDH014 and described in the March 13, 2025 news release. Saturn is currently the southernmost defined zone and was first intersected by hole DPDH028 and described in the news release dated April 24, 2025. All three of these zones, along with the entirety of the Lunahuasi deposit, remain open to expansion in all directions as we have yet to define any of the deposit’s limits.

In addition to these three zones, we have numerous isolated drill intersections that we are confident will develop into new zones. For example, Table 1 shows intersections from hole DPDH040 (8.00m at 11.42% CuEq) and DPDH043 (46.80m at 9.55% CuEq) which, along with multiple intersections in other holes, appear to represent additional high-grade zones which will be defined with more drilling.

The Phase 3 drill program was completed on May 8, 2025, with a total of 25,003m drilled in 24 holes and all field activities have now been concluded. We are now focused on advancing our geological interpretation and building out the deposit model during the austral winter season before finalizing and announcing our Phase 4 program plans in the upcoming months. Full assays for the final four holes of the Phase 3 program representing 2,360m of drill core are pending.

Table 2: Assay Intervals by News Release Date

Qualified Persons and Technical Notes

The scientific and technical disclosure included in this news release have been reviewed and approved by Bob Carmichael, B.A.Sc., P.Eng. who is the Qualified Person as defined by NI 43-101. Mr. Carmichael is Vice President, Exploration for the Company.

Samples were cut at NGEx’s operations base in San Juan, Argentina by Company personnel. Diamond drill core was sawed and then sampled in maximum 2-meter intervals, stopping at geological boundaries. Core diameter is a mix of PQ, HQ and NQ depending on the depth of the drill hole. Samples were bagged, tagged, and packaged for shipment by truck to the ALS preparation laboratory in Mendoza, Argentina where they were crushed and a 500g split was pulverized to 85% passing 200 mesh. The prepared sample splits were sent to the ALS assay laboratory in Lima, Peru for copper, gold and silver assays, and multi-element ICP. ALS is an accredited laboratory which is independent of the Company. Gold assays were by fire assay fusion with AAS finish on a 30g sample. Copper and silver were assayed by atomic absorption following a 4-acid digestion. Samples were also analyzed for a suite of 48 elements with ME-MS61 plus mercury and a sequential copper leach analysis was completed on each sample with copper greater than 500ppm (0.05%). Sequential copper analysis involves the sequential leaching of the sample by acid, followed by a cyanide solution. It can be used to differentiate copper speciation, with copper oxide minerals leachable with acid and secondary copper minerals (enargite, chalcocite, covellite) leachable by cyanide. The residual copper remaining following the sequential leaches it typically contained in chalcopyrite and bornite. Copper and gold standards as well as blanks and duplicates (field, preparation, and analysis) were randomly inserted into the sampling sequence for Quality Control. On average, 9% of the submitted samples are Quality Control samples. No data quality problems were indicated by the QA/QC program.

About NGEx Minerals

NGEx Minerals is a copper and gold exploration company based in Canada, focused on exploration of the Lunahuasi copper-gold-silver project in San Juan Province, Argentina, and the nearby Los Helados copper-gold project located approximately nine kilometres to the northeast in Chile’s Region III. Both projects are located within the Vicuña District, which includes the Caserones mine, and the Josemaria and Filo del Sol deposits.

NGEx owns 100% of Lunahuasi and is the majority partner and operator for the Los Helados project, subject to a Joint Exploration Agreement with Nippon Caserones Resources LLC, which is the indirect 30% owner of the operating Caserones open pit copper mine located approximately 17 kilometres north of Los Helados. Lundin Mining Corporation holds the remaining 70% stake in Caserones.

Lunahuasi Geology Drill Plan 2025 July A (CNW Group/NGEx Minerals Ltd.)