FORTY-TWO DIAMOND CORE DRILL HOLES COMPLETED AT GOLDEN GATE.
MAJOR DRILL PROGRAM OVER 12,200M TARGETED EXTENSIONS OF GOLD AND TUNGSTEN MINERALISATION
HIGHLIGHTS
- Forty-Two drill holes completed at Horse Heaven’s Golden Gate Prospect: 42 diamond core holes have been drilled for 12,236m (40,144 ft) successfully completing the planned 2026 drill program at Golden Gate, part of the Horse Heaven Project. The average hole depth is approximately 290m.
- Assay results pending on 39 holes: Assay results pending for gold and tungsten from 39 drillholes, with results to be reported over coming months as they are received.
- Wide intercepts of gold mineralisation previously reported: Gold mineralisation has been previously reported from Golden Gate from the first three holes of the 2026 drill program and the 2025 program, including:
- Best gold intercept this year to date: 305.7 metres @ 0.64 g/t gold (Au) from surface in HH-GG26-003C, including 17.25m @ 1.19g/t Au from 264.85m (ASX announcement 24 August 2026).
- Best gold intercepts in last year’s drill program were: 189.2m @ 1.30 g/t Au from 34.1m, in HH-GG25-001C, including 70.8m @ 2.24 g/t Au from 128.8m and 253m @ 1.5 g/t Au in HH-GG25-003C (ASX announcements 2 December 2025 & 18 March 2026).
- Major extension to gold mineralisation previously reported at Golden Gate South: Results from the first three holes released to date this year have extended gold mineralisation at least 2,000 metres south of Golden Gate North, confirming “discovery status” at Golden Gate South (see ASX announcement 24 August 2026).
- Target tungsten mineralisation: The drilling program was also designed to identify the extent of tungsten mineralisation around previous mine workings at the historical Golden Gate Tungsten mine and explore a broad tungsten anomaly in soil samples at Golden Gate South. Known scheelite occurrences in early drillholes were identified visually using a shortwave ultraviolet light (see ASX announcement 1 July 2026 and 13 July 2026).
- Core logging and sample dispatch: All the drilled core has been logged and the final drill hole samples will be dispatched for multi-element analysis within the coming week.
- NASDAQ trading successful: RML has been well-received by the US market, as demonstrated by the stock achieving its highest-ever value traded on its first day trading on NASDAQ (9 September 2026). RML.NAS is trading as an ADR (200:1), which has boosted the Company’s visibility and exposure to U.S. investors, institutions and U.S. government organisations and personnel. This elevated presence in the U.S. is expected to benefit RML as it develops Horse Heaven into a potential supplier of American-made tungsten and antimony and aims to provide critical metal supply chain security to the U.S. Administration.
September 10, 2026 (Source) — Resolution Minerals Ltd (ASX: RML; NASDAQ: RML) (“Resolution” or the “Company”) is pleased to report that a total of forty two (42) diamond core holes have been completed at the Golden Gate North and Golden Gate South Prospects, for a total of 12,236m (40,144 ft) to finish the planned 2026 drill program at the Horse Heaven antimony-tungsten-gold-silver project (“Horse Heaven”), Idaho, USA (Figure 1).
Core logging is complete, recording geology, alteration and mineralisation. All drill metres have been logged (and photographed) by Company geologists or full-time contractors, including inspection by UV light to identify scheelite, a tungsten ore-mineral.
Craig Lindsay, Resolution’s CEO of US Operations, stated:
“I am exceedingly pleased to announce the completion of all the planned drillholes at Golden Gate. We await gold and tungsten assay results from the drillhole samples with anticipation. The 2026 drill program marks the largest exploration program ever conducted at Horse Heaven. I thank the team and the drillers for this accomplishment. This work marks a major step forward in the development of the project.”
Golden Gate is located within Resolution’s Horse Heaven Antimony-Tungsten-Gold-Silver Project in Idaho, USA, and immediately adjacent to Perpetua Resources’ Stibnite Gold Project, a large, recently permitted Antimony-Gold project. Both Golden Gate and Antimony Ridge have been selected for FAST-41 Transparency Coverage from the US Permitting Council, accelerating the permitting timelines for an ongoing permitting program at both prospects and the entire Horse Heaven project.
Wide intercepts of gold mineralisation, previously reported, with higher grade zones:
Gold mineralisation has been identified in all three previously reported diamond core drill holes with assay results from this year’s drilling, extending gold mineralisation at least 2000 metres south from Golden Gate North to Golden Gate South. The best gold intercept in this year’s drilling to date shows gold mineralisation extending from surface downhole to the base of hole in drill hole HH-GG26-003C.
Drill hole HH-GG26-003C: 305.7 metres @ 0.64 g/t Au from surface;
Including: 6.5m @ 1.33g/t Au from 62.0m downhole;
17.25m @ 1.19g/t Au from 264.85m downhole;
Major extension to gold mineralisation confirms discovery status at Golden Gate South
Significant pervasive gold mineralisation was identified in all three diamond core drill holes with reported assay results to date from this season’s drilling. Results extended gold mineralisation at least 2,000 metres south of Golden Gate North, confirming “discovery status” at Golden Gate South. Drilling assay results, soil sampling, geophysics and geological mapping has now confirmed the discovery and presence of gold mineralisation at Golden Gate South (ASX announcement 24 August 2026).
Successful Phase 1 drilling last year (2025) for gold mineralisation
This season’s drilling follows the successful Phase 1 drilling campaign in 2025, which totalled 3,780 metres (10,100 ft) across 14 drill holes. All Phase 1 drill holes intersected gold mineralisation from surface and delivered multiple broad gold intercepts, including:
253m @ 1.5 g/t Au (HH-GG25-003C);
189.2m @ 1.30 g/t Au (HH-GG25-001C);
265.2m @ 0.60 g/t Au (HH-GG25-002C); and
240.8m @ 0.64 g/t Au (HH-GG25-004C) (ASX announcements 2 December 2025 & 18 March 2026).
Table 1: Completed drill hole details for 2026 drill program for a total of 12,236m (40,144 ft)
| Hole ID | Drill Type | Diameter | Grid | Datum | Zone | Easting | Northing | Elevation (m) | Dip | Az | EOH (m) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| HH-GG26-01C | Core | HQ3 | UTM | NAD83 | 11T | 619623.1 | 4977156.8 | 1567.9 | -60 | 300 | 245.06 |
| HH-GG26-02C | Core | HQ3 | UTM | NAD83 | 11T | 619623.1 | 4977156.8 | 1567.9 | -60 | 120 | 210.45 |
| HH-GG26-03C | Core | HQ3 | UTM | NAD83 | 11T | 619623.1 | 4977156.8 | 1567.9 | -60 | 90 | 308.10 |
| HH-GG26-04C | Core | HQ3 | UTM | NAD83 | 11T | 619395.0 | 4977319.0 | 1612.6 | -50 | 300 | 274.50 |
| HH-GG26-05C | Core | HQ3 | UTM | NAD83 | 11T | 619395.0 | 4977319.0 | 1612.6 | -50 | 340 | 274.50 |
| HH-GG26-06C | Core | HQ3 | UTM | NAD83 | 11T | 619395.0 | 4977319.0 | 1612.6 | -50 | 120 | 304.80 |
| HH-GG26-07C | Core | HQ3 | UTM | NAD83 | 11T | 619515.5 | 4977528.4 | 1700.8 | -45 | 300 | 256.20 |
| HH-GG26-08C | Core | HQ3 | UTM | NAD83 | 11T | 619515.5 | 4977528.4 | 1700.8 | -60 | 340 | 304.80 |
| HH-GG26-09C | Core | HQ3 | UTM | NAD83 | 11T | 619515.5 | 4977528.4 | 1700.8 | -50 | 120 | 304.80 |
| HH-GG26-10C | Core | HQ3 | UTM | NAD83 | 11T | 619499.5 | 4977661.6 | 1761.6 | -45 | 300 | 200.65 |
| HH-GG26-11C | Core | HQ3 | UTM | NAD83 | 11T | 619499.5 | 4977661.6 | 1761.6 | -60 | 300 | 260.00 |
| HH-GG26-12C | Core | HQ3 | UTM | NAD83 | 11T | 619499.5 | 4977661.6 | 1761.6 | -50 | 340 | 260.80 |
| HH-GG26-13C | Core | HQ3 | UTM | NAD83 | 11T | 619611.9 | 4977632.2 | 1772.1 | -50 | 300 | 301.30 |
| HH-GG26-14C | Core | HQ3 | UTM | NAD83 | 11T | 619611.9 | 4977632.2 | 1772.1 | -50 | 340 | 305.00 |
| HH-GG26-15C | Core | HQ3 | UTM | NAD83 | 11T | 619611.9 | 4977632.2 | 1772.1 | -50 | 120 | 305.00 |
| HH-GG26-16C | Core | HQ3 | UTM | NAD83 | 11T | 619748.8 | 4977512.2 | 1790.9 | -50 | 300 | 304.80 |
| HH-GG26-17C | Core | HQ3 | UTM | NAD83 | 11T | 619748.8 | 4977512.2 | 1790.9 | -50 | 120 | 304.80 |
| HH-GG26-18C | Core | HQ3 | UTM | NAD83 | 11T | 619748.8 | 4977512.2 | 1790.9 | -60 | 240 | 304.80 |
| HH-GG26-19C | Core | HQ3 | UTM | NAD83 | 11T | 619844.2 | 4977512.6 | 1791.8 | -60 | 120 | 304.80 |
| HH-GG26-20C | Core | HQ3 | UTM | NAD83 | 11T | 619844.2 | 4977512.6 | 1791.8 | -50 | 300 | 304.80 |
| HH-GG26-21C | Core | HQ3 | UTM | NAD83 | 11T | 619894.2 | 4977540.1 | 1803.8 | -60 | 120 | 304.80 |
| HH-GG26-22C | Core | HQ3 | UTM | NAD83 | 11T | 619894.2 | 4977540.1 | 1803.8 | -60 | 300 | 304.80 |
| HH-GG26-23C | Core | HQ3 | UTM | NAD83 | 11T | 619940.0 | 4977622.6 | 1873.6 | -65 | 270 | 304.80 |
| HH-GG26-24C | Core | HQ3 | UTM | NAD83 | 11T | 619940.0 | 4977622.6 | 1873.6 | -50 | 70 | 304.80 |
| HH-GG26-25C | Core | HQ3 | UTM | NAD83 | 11T | 619983.9 | 4977754.6 | 1915.2 | -60 | 140 | 304.80 |
| HH-GG26-26C | Core | HQ3 | UTM | NAD83 | 11T | 619714.3 | 4978906.7 | 1962.9 | -50 | 340 | 228.35 |
| HH-GG26-27C | Core | HQ3 | UTM | NAD83 | 11T | 619714.3 | 4978906.7 | 1962.9 | -50 | 300 | 241.90 |
| HH-GG26-28C | Core | HQ3 | UTM | NAD83 | 11T | 619714.3 | 4978906.7 | 1962.9 | -60 | 255 | 207.40 |
| HH-GG26-29C | Core | HQ3 | UTM | NAD83 | 11T | 619803.5 | 4979032.4 | 1986.1 | -45 | 300 | 213.55 |
| HH-GG26-30C | Core | HQ3 | UTM | NAD83 | 11T | 619803.5 | 4979032.4 | 1986.1 | -75 | 300 | 364.50 |
| HH-GG26-31C | Core | HQ3 | UTM | NAD83 | 11T | 619804.5 | 4978699.0 | 1989.4 | -75 | 270 | 383.65 |
| HH-GG26-32C | Core | HQ3 | UTM | NAD83 | 11T | 619804.5 | 4978699.0 | 1989.4 | -75 | 340 | 360.65 |
| HH-GG26-33C | Core | HQ3 | UTM | NAD83 | 11T | 619853.3 | 4978813.0 | 1984.5 | -45 | 300 | 305.00 |
| HH-GG26-34C | Core | HQ3 | UTM | NAD83 | 11T | 619853.3 | 4978813.0 | 1984.5 | -70 | 300 | 390.10 |
| HH-GG26-35C | Core | HQ3 | UTM | NAD83 | 11T | 619853.3 | 4978813.0 | 1984.5 | -60 | 270 | 305.65 |
| HH-GG26-36C | Core | HQ3 | UTM | NAD83 | 11T | 619908.1 | 4978949.2 | 1978.6 | -45 | 300 | 292.80 |
| HH-GG26-37C | Core | HQ3 | UTM | NAD83 | 11T | 619908.1 | 4978949.2 | 1978.6 | -75 | 300 | 305.00 |
| HH-GG26-38C | Core | HQ3 | UTM | NAD83 | 11T | 619908.1 | 4978949.2 | 1978.6 | -55 | 340 | 324.85 |
| HH-GG26-39C | Core | HQ3 | UTM | NAD83 | 11T | 619858.5 | 4979095.6 | 1967.2 | -50 | 340 | 221.15 |
| HH-GG26-40C | Core | HQ3 | UTM | NAD83 | 11T | 619858.5 | 4979095.6 | 1967.2 | -50 | 270 | 243.80 |
| HH-GG26-41C | Core | HQ3 | UTM | NAD83 | 11T | 619858.5 | 4979095.6 | 1967.2 | -60 | 120 | 375.35 |
| HH-GG26-42C | Core | HQ3 | UTM | NAD83 | 11T | 619916.9 | 4979078.9 | 1972.3 | -60 | 20 | 308.05 |
Drill holes targeted tungsten and gold mineralisation at Golden Gate
Drill holes have targeted both gold and tungsten mineralisation, including a significant tungsten in soil anomaly identified at Golden Gate South and around previously mined scheelite at Golden Gate North.
Scheelite is known to occur at Golden Gate (ASX Announcement 8 September 2025). In 2025 diamond core drilling scheelite is reported to occur with quartz and manganese in veins in heavily oxidised quartz-feldspar altered granite. In the Company’s 2026 drill program at Golden Gate, scheelite has again been identified. Known scheelite occurrences in the early drillholes were identified visually using a shortwave ultraviolet light (ASX announcement 1 July 2026 and 13 July 2026). The Company anticipates assay results from this core in coming weeks.
Objectives of the 2026 Drill Program
The objectives of RML’s large 2026 Golden Gate Drill Program, of over 12,000 metres (40,000 ft) of diamond core drilling, across 42 holes, was to target and define the scale and extent of tungsten and gold mineralisation at Golden Gate, starting at Golden Gate South. Golden Gate is located within RML’s Horse Heaven Antimony-Tungsten-Gold-Silver Project in Idaho, USA, immediately adjacent to the recently permitted Perpetua Resources’ Stibnite Gold Project.
Figure 1: Resolution’s Horse Heaven Antimony-Tungsten-Gold-Silver Project – Antimony Ridge (Sb) with Golden Gate (Au) and Golden Gate Tungsten (W).
Figure 2: Resolution’s last drillhole HH-GG26-042C of the 2026 program at Golden Gate North.
Figure 3: Resolution’s Golden Gate South and Golden Gate North within the Horse Heaven Project – Location of drill holes over coloured gold-in-soil-samples with the location of Cross section in Figure 2. Gold-in-soil-samples emphasises the continuity of gold mineralisation between Golden Gate South and Golden Gate North and between drilled areas (from ASX announcement 24 August 2026 and 11 June 2025).
Figure 4: Resolution’s Golden Gate South – Location of drill holes over coloured gold-in-soil-samples and interpreted mineralisation and alteration with three reported drill hole gold assays as histograms (red) and location of Cross section in Figure 2. Gold-in-soil-samples emphasises the continuity of gold mineralisation between drilled areas (from ASX announcement 24 August 2026 and 11 June 2025).
Authorised for release by the Board of Resolution Minerals Ltd.
For further information, please contact:
Aharon Zaetz
Executive Director
Resolution Minerals Ltd
M: +61 424 743 098
[email protected]
Jane Morgan
Investor Relations
Jane Morgan Management
M: +61 405 555 618
[email protected]
Forward Looking Statements
This announcement may contain forward-looking statements. These statements relate to the Company’s expectations, beliefs, intentions or strategies regarding the future. These statements can be identified by the use of words like “anticipate”, “believe”, “intend”, “estimate”, “expect”, “may”, “plan”, “project”, “will”, “should”, “seek” and similar words or expressions containing same. These forward-looking statements reflect the Company’s views and assumptions with respect to future events as of the date of this release and are subject to a variety of unpredictable risks, uncertainties, and other unknowns. Actual and future results and trends could differ materially from those set forth in such statements due to various factors, many of which are beyond our ability to control or predict. These include, but are not limited to, risks or uncertainties associated with the acquisition and divestment of projects, joint venture and other contractual risks, metal prices, exploration, development and operating risks, competition, production risks, sovereign risks, regulatory risks including environmental regulation and liability and potential title disputes, availability and terms of capital and general economic and business conditions.
Given these uncertainties, no one should place undue reliance on any forward-looking statements attributable to the Company, or any of its affiliates or persons acting on its behalf. Subject to any continuing obligations under applicable law, the Company disclaims any obligation or undertaking to disseminate any updates or revisions to any forward-looking statements in this announcement to reflect any change in expectations in relation to any forward-looking statements or any change in events, conditions or circumstances on which any such statement is based.
JORC cross references
The Company confirms it is not aware of any new information or data that materially affects the information cross referenced in this announcement and further to “Agreement to Acquire Major US Antimony Project and Placement” on 11 June 2025, “Drilling to Expand Footprint at Horse Heaven” on 8 September 2025, “Exceptional Rock Chip and Soil Results from Antimony Ridge” on 15 September 2025, “Exceptional Rock Chip and Soil Results Update” on 24 September 2025, “Significant Gold Discovery at Horse Heaven Project” on 28 October 2025, “Significant Gold Discoveries Continue at Golden Gate” on 3 November 2025, “Golden Gate Discovery Grows with Multiple Gold Intercepts” on 2 December 2025, “Further Ultra High Grade Antimony and Silver Results” on 14 January 2026, “New Gold Discovery at Golden Gate South” on 9 February 2026, “Gold & Significant Tungsten Mineralisation in Drilling” on 17 February 2026, “Major Drilling Program Planned to Test Golden Gate Scale” on 18 March 2026, “Exceptional Tungsten Grade Identified in Stockpile Material” on 26 March 2026, “Antimony Ridge Model Shows Extensive Vein Swarms” on 10 April 2026, “Antimony Trioxide Produced from Antimony Ridge“ on 14 April 2026, “Tungsten Concentrates Produced from Golden Gate“ on 28 April 2026, ”Tungsten and Gold Drilling Underway and High Gold Recoveries” on 15 May 2026, and “First 2026 Gold and Tungsten Drilling Proving Encouraging” on 21 May 2026, “Drill Program Progressing Well at Horse Heaven” on 1 July2026 and clarified on 13 July 2026, and “Major Gold Extension Confirmed at Golden Gate” on 24 August 2026. The Company confirms that the form and context in which the Competent Person’s findings are presented have not been materially modified from the original announcements.
Competent Person’s Statement
The information in this report that relates to exploration results relating to metallurgy, is based on and fairly represents information reviewed and compiled by Mr Ross Brown BSc (Hons), M AusIMM, Principal Geologist/director of exploration consulting firm, Riviere Minerals Pty. Ltd, who is a Member of the Australasian Institute of Mining and Metallurgy. Mr Brown has sufficient experience, which is relevant to the exploration activities, style of mineralisation and types of deposits under consideration, and to the activity which has been undertaken, to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Riviere Minerals is consulting to Resolutions Minerals Limited and consents to the inclusion in this announcement of the matters based on their information in the form and context in which it appears.
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