Resolution Minerals Ltd (ASX: RML | OTCQB: RLMLF) has strengthened its 2025 drilling success at the Horse Heaven Project in Idaho, USA, after identifying additional broad gold mineralisation and a significant tungsten intercept at Golden Gate North. The latest assay results confirm near-surface gold across multiple reverse circulation (RC) holes and strong mineralisation in the final diamond core hole of the season.
The Company has now completed its 2025 drilling campaign at Golden Gate, with every hole intersecting gold mineralisation. Management believes the Golden Gate Fault Zone now hosts a major open-ended gold discovery with associated tungsten potential.
Figure 1: Horse Heaven Project map showing the Golden Gate and Antimony Ridge targets, plus the fully permitted Stibnite Gold Project 16km east (UTM coordinates shown). [Resolution Minerals]
Strong Finish to the 2025 Drilling Campaign
The final assay results relate to RC holes HH-GG25-011R, HH-GG25-012R, HH-GG25-013R, HH-GG25-014R and diamond core hole HH-GG25-006C.
The results confirm:
- Broad, near-surface gold mineralisation
- Significant tungsten mineralisation in HH-GG25-012R
- Multiple holes ending in mineralisation
- Gold continuity across Golden Gate North and South
RML’s CEO of US Operations, Craig Lindsay, commented:
“The drilling accomplished at the Horse Heaven Project in our first season was exceptional. 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. We are very excited about the potential to significantly grow both gold and tungsten mineralization. Golden Gate is only in early days and is emerging into what we feel is a very large gold deposit.”
The Company has now confirmed gold mineralisation from the first hole, HH-GG25-001C, through to the last hole, HH-GG25-014R.
Reverse Circulation Program Delivers Near-Surface Gold and Tungsten
The 2025 trial RC program pursued three clear objectives:
- Validate near-surface mineralisation
- Test groundwater conditions
- Assess RC drilling efficiency versus diamond drilling
The program completed four RC holes. Each hole intersected gold mineralisation.
HH-GG25-012R – Significant Tungsten and Gold
HH-GG25-012R delivered a standout tungsten intercept:
- 21m @ 0.06% W
- Including 8m @ 0.14% W
The hole also returned:
- 99.1m @ 0.23g/t Au from surface
- 20m @ 0.35g/t Au
- 9.1m @ 0.65g/t Au
- Ended with 0.80g/t Au over 1.5m
The tungsten intercept confirms the extension of high-grade W mineralisation from historic mine workings to the north.
The Company plans to reanalyse tungsten-bearing samples using lithium-borate fusion and XRF analysis to ensure maximum accuracy.
Figure 2: Cross section of HH-GG25-012R (and HH-GG25-004C) showing geology, key gold intercepts and historic RC holes; highest gold grades occur at the bottom and align with tungsten. [Resolution Minerals]
HH-GG25-013R – Broad Gold From Surface
HH-GG25-013R returned:
- 99.1m @ 0.38g/t Au from surface
- Including 9.1m @ 0.54g/t Au
The hole ended in mineralisation and confirmed near-surface oxidised gold to the east of previous drilling. The results extend mineralisation across Golden Gate Hill and remain open eastward and at depth.
HH-GG25-011R and HH-GG25-014R – Mineralisation Throughout
HH-GG25-011R intersected:
- 50.3m @ 0.13g/t Au
The hole encountered groundwater earlier than expected but returned consistent gold values throughout.
HH-GG25-014R at Golden Gate South returned:
- 9.1m @ 0.35g/t Au
- Ended in mineralisation at 59m
These results confirm mineralisation within the Vibika Creek Fault Zone and reinforce continuity between Golden Gate North and South.
Figure 3: Schematic cross section of HH-GG25-013R (and HH-GG25-007C) displaying local geology, key gold intercepts, and projected intersections from RML diamond drill holes, including HH-GG25-004C. [Resolution Minerals]
Figure 4: Schematic cross-section of HH-GG25-014R (and HH-GG25-008C) illustrating local geology and highlighting significant gold intercepts. [Resolution Minerals]
Diamond Core Hole HH-GG25-006C Confirms Depth Continuity
Diamond core hole HH-GG25-006C marked the final hole of the 2025 core program. The hole delivered:
- 103.5m @ 0.37g/t Au
- 133.7m @ 0.55g/t Au from 376.5m
- Including 15.6m @ 1.10g/t Au
The hole ended in mineralisation and filled a drilling gap between earlier core holes. The mineralisation shows strong association with pyrite and arsenopyrite, consistent with the intrusive-related gold (IRG) model.
The Company has now confirmed that all ten diamond core holes drilled in 2025 intercepted significant gold.
Figure 5: Schematic cross-section of HH-GG25-006C showing local geology and significant gold intercepts. The aplite dyke represents a late-stage intrusion that post-dates the mineralisation. [Resolution Minerals]
Major Gold Discovery Across 1.5km Strike
Executive Director Aharon Zaetz emphasised the scale of the discovery:
“It is sometimes difficult to comprehend but immensely pleasing to consider the fact that every hole drilled by us at Golden Gate intercepted significant intervals of gold mineralisation. From our first hole HH-GG25-001C to our last hole 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.”
He further added:
“It is a gold discovery totally in keeping with the intrusive related, shear-hosted gold exploration model we have for the original Golden Gate Fault Zone, and it is a credit to our technical team for recognising such potential. The fast-approaching 2026 drilling campaign will seek to define a maiden resource at Golden Gate.”
Gold mineralisation now spans:
- 1,500 metres strike length
- 300 metres width
- Open at depth
- Open along strike northeast and southwest
The Company continues to assess whether Golden Gate North and South represent one continuous system or parallel fault-offset deposits.
Figure 6: Schematic gold distribution models at Golden Gate (from the 9 February 2026 ASX announcement) showing possible scenarios: continuous mineralisation, two discrete fault-offset bodies, or parallel systems. Further drilling next field season will test the most accurate model. [Resolution Minerals]
Exploration Model Strengthens
The Company interprets Golden Gate as a shear-hosted intrusive-related gold system. The northeast-southwest fault orientation controls mineralisation and alteration.
Management believes Golden Gate shares similarities with deposits in the nearby Stibnite Mining District. The geological setting supports potential scale growth through further drilling.
Figure 7: IRGS cross section showing Hanger Flats and Yellow Pine (right) and Antimony Ridge and Golden Gate (left), adapted from Lang et al. (2000) and first released in RML’s 11 June 2025 announcement. [Resolution Minerals]
2026 Drilling and Development Plans
The Company will intensify drilling in 2026 with a focus on:
- Strike extensions between Golden Gate North and South
- Northeast strike extensions from Golden Gate North
- Southwest strike extensions from Golden Gate South
- Deeper extensions below the current drill depth
RML will also lodge a new Plan of Operation to expand its drilling footprint and reopen historic access routes.
In parallel, the Company will advance exploration at Antimony Ridge, including drilling and bulk sampling of high-grade antimony mineralisation.
Metallurgical testing continues and will accelerate alongside drilling milestones.
Share Price Activity (ASX)
- Last Price: $0.042
- 1-Year Performance: +366.67%
- Vs Sector (1 year): +334.40%
- Vs ASX 200 (1 year): +367.10%
- Market Capitalisation: $90.89 million
The Company has delivered exceptional share price growth over the past year, significantly outperforming both the broader sector and the ASX 200.
Investors Outlook
Resolution Minerals has transitioned from exploration targeting to confirmed gold discovery at Golden Gate. Every 2025 drill hole intercepted gold mineralisation, and multiple holes ended in mineralisation, signalling strong expansion potential.
Major investment considerations include:
- Open-ended mineralisation in all directions
- Near-surface oxidised gold suitable for potential open-pit scenarios
- Emerging tungsten credit potential
- 1.5km strike already defined
- 2026 program targeting maiden resource definition
Management now focuses on defining scale and continuity with aggressive follow-up drilling. If the Company converts the current envelope into a maiden JORC-compliant resource, the market may reassess valuation relative to its $90.89 million market capitalisation.
