How big is the gold zone Resolution Minerals (ASX:RML) has outlined at Golden Gate North in Idaho?

Sonal Goyal

28 October 2026 11:24 PM AEDT

How big is the gold zone Resolution Minerals (ASX:RML) has outlined at Golden Gate North in Idaho?

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Key Highlights

• New assays from 2026 diamond drilling confirmed a gold zone at Golden Gate North at least 500 metres long and at least 200 metres wide.

• The zone is open at depth for at least 300 metres, within the 100 per cent owned Horse Heaven project.

• Horse Heaven sits next to Perpetua Resources' recently permitted Stibnite Gold Project in central Idaho.

Resolution Minerals Ltd (ASX:RML) says new assays from its 2026 diamond drilling have confirmed a gold zone at least 500 metres long at Golden Gate North, part of its Horse Heaven antimony-tungsten-gold-silver project in Idaho, USA. The company reported the results on 26 October 2026.

Golden Gate sits within the 100%-owned Horse Heaven project, next to Perpetua Resources' recently permitted Stibnite Gold Project in central Idaho. Resolution, which is also listed on Nasdaq, has been drilling the area to test the scale of both gold and tungsten mineralisation.

The size of the zone

According to the release, the gold zone at Golden Gate North is at least 500 metres long, at least 200 metres wide and open at depth for at least 300 metres. The company said mineralisation remains open to the north-east and south-west for a further 500 metres, and earlier gold-in-soil results suggest it could extend roughly 500 metres north and a similar distance south.

These are geological dimensions interpreted from drilling and soil sampling. They are not a mineral resource or an exploration target, and Resolution has not yet published a resource estimate for Golden Gate.

Latest drill results

The newly reported holes returned long intervals of low-grade gold. Hole HH-GG26-032C returned 324 metres at 0.49 g/t gold from surface, including 92.4 metres at 0.54 g/t gold from 215.7 metres and 25.5 metres at 0.82 g/t gold from 190.2 metres. Hole HH-GG26-031C returned 322 metres at 0.37 g/t gold from surface, including 30.8 metres at 0.88 g/t gold from 76.2 metres. Hole HH-GG26-039C returned 134.2 metres at 0.40 g/t gold from surface, including 51.7 metres at 0.53 g/t gold from 82.5 metres.

All intervals are downhole lengths and the company has not stated true widths. The results add to 2025 drilling, which included 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.

Golden Gate South, about two kilometres away, has returned narrower higher-grade intervals such as 10.2 metres at 1.83 g/t gold from 58.05 metres. Resolution suggested the Golden Gate North zone may extend towards the southern area along a gold-in-soil anomaly, although that link has not been drill-tested.

CEO of US operations Craig Lindsay said Golden Gate was developing into "a large gold system".

Why it matters

Bulk-tonnage, lower-grade gold systems can become economically meaningful if they prove large and continuous, particularly near infrastructure and where metallurgy is favourable. Resolution's location beside an advanced development project adds regional context. However, grades in the latest holes are mostly below 1 g/t, so the eventual economics will depend on tonnage, recoveries, strip ratios and costs that have not yet been assessed.

The release did not report tungsten, antimony or silver grades, despite the project's multi-commodity focus. Initial tungsten assays are expected soon, it said.

Pending assays and next steps

Resolution has completed 42 diamond holes for 12,236 metres in its 2026 programme, with an average depth of about 290 metres. The company said results for a further 32 holes are still to be released, meaning the current picture is incomplete.

Permitting for a 2027 drilling programme is progressing through an environmental assessment. That programme is planned to test a 2,000-metre corridor linking Golden Gate North and South, step out north of the current zone and include infill drilling. The company is also advancing permitting and field studies at Antimony Ridge, developing a plan to process existing tungsten stockpiles and continuing metallurgical testing.

Outstanding assays, the first tungsten results and any move towards a maiden resource will determine whether the drilling to date translates into a defined deposit. Permitting timelines in Idaho also remain a factor for the pace of future work.

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