Resolution Minerals Ltd (ASX:RML, OTC:RLMLF, FRA:NC3) has reported further broad gold intersections and a significant tungsten hit from final assays of its 2025 drilling campaign at the Golden Gate Fault Zone within the 100%-owned Horse Heaven Gold–Antimony–Tungsten–Silver Project in Idaho, USA.
Horse Heaven Project location map, highlighting the location of the two current major antimony-gold-silver tungsten targets, the Golden Gate Target (where the Phase 1 Core Drilling Program was conducted) and the Antimony Ridge Target. Also highlighted is the fully-permitted Stibnite Gold Project, which is only 16km east of Horse Heaven. Note: Coordinates are UTM metres north and east metric system, not latitude/longitude.
The latest results from reverse circulation (RC) and diamond core drilling at Golden Gate North and South continue to demonstrate near-surface, open-ended gold mineralisation, with tungsten identified in one RC hole — adding a potential by-product dimension to the emerging district-scale discovery.
The new assays cover RC holes HH-GG25-011R to HH-GG25-014R and diamond core hole HH-GG25-006C, marking the completion of the company’s 2025 program.
Drill hole location plan for the Golden Gate North and Golden Gate South Prospects, highlighting the five holes with the latest assay results, the subject of this announcement, HH-GG25-011R, HH-GG25-012R, HH-GG25-013R, drilled at Golden Gate North, and HH-GG25-014R, drilled at Golden Gate South, and HH-GG25-006C drilled Golden Gate North. Also showing the location of the drill hole cross sections A-A', B-B', C-C' and D-D'. Golden Gate South is located 600m south of Golden Gate North. The NE-SE orientation of the gold mineralisation at Golden Gate closely parallels the many faults that traverse the greater prospect area.
Broad near-surface gold in RC drilling
At Golden Gate North, RC hole HH-GG25-012R returned a broad 99.1-metre interval grading 0.23 g/t gold from surface, including 20 metres at 0.35 g/t and 9.1 metres at 0.65 g/t. The hole ended in mineralisation, with a final 1.5 metres grading 0.80 g/t gold.
Notably, the same hole delivered a 21-metre tungsten (W) intercept grading 0.06% W from 70.1 metres, including 8 metres at 0.14% W. The company said this confirms the extension of high-grade tungsten mineralisation from historic mine workings immediately to the north.
Schematic drill hole cross section HH-GG25-012R (and HH-GG25-004C) showing the local geology, highlighting the significant gold intersections, and pre-RML RC drill hole (87-GGR-31 and 87-GGR-35) intersection draw into the plane of the cross section. It is interesting to note that the strongest gold grades in HH-GG25-012R are at the bottom of the hole and that they appear associated with tungsten.
RC hole HH-GG25-013R intersected 99.1 metres at 0.38 g/t gold from surface, including 9.1 metres at 0.54 g/t, and also ended in mineralisation.
Schematic drill hole cross section HH-GG25-013R (and HH-GG25-007C) showing the local geology, highlighting the significant gold intersections, and RML diamond drill hole (and HH-GG25-004C – Refer also to Figure 4) intersection draw into the plane of the cross section.
HH-GG25-011R returned 50.3 metres at 0.13 g/t gold across the entire hole length, while HH-GG25-014R at Golden Gate South encountered anomalous to low-grade gold throughout, including 9.1 metres at 0.35g/t.
Schematic drill hole cross section HH-GG25-011R (and HH-GG25-002C) showing the local geology, highlighting the significant gold intersections, and pre-RML RC drill hole (87-GGR-33) intersection draw into the plane of the cross section. HH-GG25-011R was collared into and finished in volcanics.
All RC holes intercepted gold mineralisation and were stopped at the water table under existing permit conditions.
Resolution said the RC program was designed to validate near-surface mineralisation, collect preliminary hydrogeological data and assess RC drilling as a faster, lower-cost alternative to diamond drilling. The results support the presence of broad oxidised gold zones near surface and will inform future drill planning.
Diamond core program reinforces scale
Final assays from diamond core hole HH-GG25-006C also confirmed extensive mineralisation, returning 103.5 metres at 0.27 g/t gold from surface and a deeper 133.7-metre interval at 0.55 g/t from 376.5 metres, including 15.6 metres at 1.10 g/t. The hole ended in mineralisation.
Schematic drill hole cross section HH-GG25-006C showing the local geology, highlighting the significant gold intersections. The aplite dyke is interpreted as a late-intrusion that post-dates mineralisation.
With this result, all 10 diamond core holes completed in 2025 have intercepted significant gold mineralisation. Previously reported standout intersections include 253 metres at 1.50 g/t gold from surface in HH-GG25-003C and 197.5 metres at 1.26 g/t gold from 34 metres in HH-GG25-001C.
Mineralisation across the Golden Gate Fault Zone now spans a strike length of about 1.5 kilometres and a width of around 300 metres, with gold encountered from surface in many holes and remaining open along strike and at depth.
Two deposits emerging
Drilling to date has defined gold mineralisation at both Golden Gate North and Golden Gate South, with further work required to determine whether the zones connect into a single continuous deposit or represent fault-offset or parallel systems.
“The drilling accomplished at the Horse Heaven Project in our first season was exceptional,” said RML’s CEO of US Operations, Craig Lindsay.
“We have encountered gold discoveries at both the north and south ends of the Golden Gate Prospect, which is now emerging as a district-scale discovery,” he added. “Golden Gate is only in early days and is emerging into what we feel is a very large gold deposit.”
Schematic representations of the possible gold distribution models at Golden Gate, copied and unmodified from ASX announcement dated 9 February 2026. The gold mineralisation at Golden Gate North and Golden Gate South may be either: continuous between prospects, two discrete bodies, potentially fault-set, or are two separate but parallel systems. There is insufficient evidence to determine which model is most appropriate. The models are important in planning follow up exploration to test the shape of the gold mineralisation at Golden Gate North and Golden Gate South. This follow-up exploration is planned in the up-coming field season.
Executive director Aharon Zaetz highlighted that every hole drilled in 2025 intercepted significant gold mineralisation, from HH-GG25-001C through to HH-GG25-014R.
“It is easy to conclude that the 2025 drilling campaign has resulted in a major gold discovery, currently open ended in all directions,” Zaetz said, adding that the results align with the company’s intrusive-related, shear-hosted gold exploration model.
The company believes the mineralisation represents a sheared granite-hosted, fault-controlled disseminated gold–silver–tungsten system, sharing similarities with intrusive-related gold deposits in the region.
2026 program to focus on resource definition
With the 2025 campaign complete, Resolution is preparing for an expanded 2026 drill program aimed at defining the size and shape of the Golden Gate North and South deposits and progressing towards a maiden resource.
Planned work includes step-out drilling between the northern and southern zones, extensions along strike to the northeast and southwest, and deeper drilling below known mineralisation.
The company also intends to lodge an expanded Plan of Operations to allow for a larger drill footprint across the Golden Gate Fault Zone, alongside a separate plan for drilling and bulk sampling at the nearby Antimony Ridge target.
Schematic IRGS cross section showing the relative positions of the Stibnite Mining District Hanger Flats and Yellow Pipe deposits (Right half) and the Antimony Ridge and Golden Gate prospects (Left half). This cross section is modified from Lang et al 2000.
Metallurgical testing is ongoing and will be ramped up in line with drilling milestones as Resolution seeks to advance what it now describes as a very large and open-ended gold system at Horse Heaven.