Resolution Minerals Hits 14.8 g/t Gold as Horse Heaven Zone Widens to 600m
Key Takeaways
- Three new drill holes at Golden Gate South returned the highest gold grade ever recorded at Horse Heaven — 1.0m @ 14.8 g/t Au from 62.1m in hole HH-GG26-004C, alongside a 7.0 g/t Au high-grade core in HH-GG26-005C.
- All six holes completed on the southernmost drill section now confirm a gold mineralised zone approximately 600 metres wide, providing genuine scale to the Golden Gate South discovery.
- High-grade 1.0m intercepts are interpreted as feeder zones — structural conduits where gold concentrates before dispersing outward — suggesting higher-grade targets remain to be defined with follow-up drilling.
- The full 42-hole, 12,236m 2026 drill program is now complete, with assays still pending for 36 holes targeting both gold and tungsten mineralisation — representing a dense near-term news flow pipeline.
- Management interprets mineralisation as continuous from Golden Gate South to Golden Gate North, a key exploration upside that, if confirmed by pending assays, would materially extend the known system.
Highest gold grades yet recorded at Horse Heaven as Golden Gate South zone widens to 600 metres
New assay results from three additional drill holes have delivered the highest gold grades recorded to date in drilling at Resolution Minerals’ Horse Heaven Project in Idaho, USA. Holes HH-GG26-004C, HH-GG26-005C, and HH-GG26-006C returned a best intercept of 1.0m @ 14.8 g/t Au from 62.1m in HH-GG26-004C, with the results confirming a gold mineralised zone approximately 600 metres wide across all six holes now completed on the southernmost drill section at Golden Gate South.
The results mark a meaningful step forward in the 2026 drill program, which has now been fully completed at 42 holes for 12,236m. Gold mineralisation continues to take shape as the project’s primary near-term discovery story, with tungsten and antimony work also advancing in parallel.
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What the new assays reveal — intercepts, feeder zones, and zone geometry
Best intercepts from the three new holes
The three new holes returned a range of intercepts across the ~600-metre width of the Golden Gate South section, from shallow near-surface hits to a deeper western intercept in HH-GG26-006C.
| Drill Hole | From (m) | Intercept Length | Grade | Notes |
|---|---|---|---|---|
| HH-GG26-004C | 62.1m | 1.0m | 14.8 g/t Au + 12 g/t Ag | Highest gold grade at Horse Heaven to date |
| HH-GG26-004C | 58.1m | 7.2m | 2.35 g/t Au | Broader zone within same hole |
| HH-GG26-005C | 58.05m | 10.2m | 1.83 g/t Au | Most continuous new intercept |
| HH-GG26-005C | 58.05m | 1.0m | 7.0 g/t Au | High-grade core within above |
| HH-GG26-006C | 298.8m | 3.77m | 1.53 g/t Au (inc. 1.29m @ 4.01 g/t Au) | Deep intercept on western side |
The results sit on the same drill section as previously reported holes HH-GG26-001C, 002C, and 003C. HH-GG26-003C, reported in the 24 August 2026 ASX announcement, returned a remarkable 305.7m @ 0.64 g/t Au from surface, making the current high-grade spikes all the more geologically significant by comparison.
Feeder zones — what higher grades signal
The announcement notes that the high-grade 1.0m intercepts of 14.8 g/t Au and 7.0 g/t Au are noticeably different in style from the wide, lower-grade zones recorded across the section. Resolution Minerals interprets this stylistic difference as evidence of higher-grade “feeder zones.”
According to the announcement, gold mineralisation at Golden Gate South appears to be related to steeply dipping features that splay off the key regional structure, the Golden Gate Shear Zone. These features cut through sheared and faulted Cretaceous granodiorite of the Idaho Batholith.
Management’s view, as stated in the announcement, is that mineralisation is interpreted as continuous from Golden Gate South to Golden Gate North. This is a key exploration upside for the project, though it remains an interpretation at this stage of drilling.
What are gold feeder zones and why do they matter for investors?
Think of a gold deposit in layers. The broad, lower-grade zones you often see in early-stage drilling represent areas where gold-bearing hydrothermal fluids once spread out through surrounding rock, leaving behind a dispersed, mineralised halo. A feeder zone is different — it is the higher-grade structural conduit through which those fluids originally travelled. Gold concentrates heavily in feeder zones before dispersing outward.
Finding feeder zones early in an exploration program matters because they often represent the highest-value drilling targets and can indicate proximity to a primary mineralising source. They are, in short, what explorers look for when they want to understand whether a broad, low-grade system has a higher-grade heart worth chasing.
At Horse Heaven, the ~600-metre-wide zone at Golden Gate South provides real scale. The 14.8 g/t and 7.0 g/t feeder-style intercepts suggest the project may have higher-grade structural targets yet to be defined with further drilling. Resolution has stated that potential exists to locate broad gold mineralised zones adjacent to these feeder zones — a statement that frames the next phase of work well.
CEO comment
Craig Lindsay, CEO of US Operations, Resolution Minerals
“The assay results continue to show a wide gold mineralised zone at Golden Gate South, with high grade zones that may indicate something more – and all of this provides additional support to our view that mineralisation extends continuously from Golden Gate South to Golden Gate North. More results should be available soon. The gold story is developing well while we advance the critical minerals of tungsten and antimony in tandem.”
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What comes next — pending assays and the broader Horse Heaven picture
With the full 42-hole, 12,236m drill program now complete, the near-term catalyst pipeline at Horse Heaven is substantial. Assays remain pending for 36 drill holes that targeted a combination of gold and tungsten mineralisation. Results will be released on an ongoing basis as they are received.
The three commodity pillars at Horse Heaven currently sit as follows:
- Gold: Active discovery phase, new feeder zones identified, mineralised zone now approximately 600 metres wide at Golden Gate South, with mineralisation interpreted as continuing toward Golden Gate North.
- Tungsten: Initial assays from the 2026 program are pending and awaited to help define the scale of mineralisation.
- Antimony: Advancing in parallel at the Horse Heaven Project, which sits immediately adjacent to Perpetua Resources’ recently permitted Stibnite Gold Project in Idaho.
Antimony supply dynamics have shifted considerably in the past two years, with export restrictions from major producing nations elevating the strategic profile of projects like Horse Heaven that carry antimony mineralisation adjacent to a permitted gold operation.
The convergence of a developing gold discovery with critical minerals assets at Horse Heaven positions the project as a multi-commodity exploration story gaining genuine definition. With 36 holes worth of assay results still to come, the next several months represent a dense period of potential news flow for investors watching this project.
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