Larvotto Resources Expands Clarks Gully Beyond Resource Model with 29m @ 6g/t AuEq
Key Takeaways
- Holes CLG140 and CLG141 both intersected mineralisation outside the existing Clarks Gully Mineral Resource Estimate, with CLG141 extending the ore shoot approximately 100 metres down plunge at depth.
- The two headline intercepts — 32.0m @ 5.68g/t AuEq and 29.1m @ 6.06g/t AuEq — each contain high-grade cores exceeding 13g/t AuEq, confirming grade quality alongside width.
- CLG141 confirmed multiple new hanging wall lodes above the principal structure, establishing Clarks Gully as a stacked, multi-lode system rather than a single-lode target.
- Tungsten grades are increasing with depth, with WO3 intercepts up to 11.13% recorded in CLG141, and metallurgical test work has already demonstrated approximately 90% tungsten recovery as a by-product.
- An updated Clarks Gully MRE is underway incorporating all 16 holes once final assays from CLG142 and CLG143 are received, with permitting for an underground operation already initiated.
Drilling at Clarks Gully pushes mineralisation beyond the existing resource model
Assay results from holes CLG138 to CLG141 at Clarks Gully have confirmed that the mineralised system at Larvotto Resources’ 100%-owned Hillgrove Antimony-Gold Project in New South Wales extends beyond the footprint of the current Mineral Resource Estimate (MRE). Holes CLG140 and CLG141 both intersected the interpreted ore shoot outside the existing resource model, with mineralisation remaining open at depth.
The two headline intercepts from this latest round of results are:
- CLG140: 32.0m @ 5.68g/t AuEq from 260.0m, including 8.0m @ 13.77g/t AuEq from 284.0m
- CLG141: 29.1m @ 6.06g/t AuEq from 339.4m, including 8.7m @ 14.83g/t AuEq from 349.3m
CLG141 extends the mineralised footprint approximately 100m down plunge at depth and along strike of the 2025 Clarks Gully MRE, reinforcing the potential for significant resource growth beyond the current model.
Managing Director Ron Heeks
“The excellent results from our ongoing drilling at Clarks continues to highlight the potential to expand the current resource. Interestingly, what we are seeing is the gold and tungsten grades appear to be increasing with depth. The potential for significant tungsten along with the already excellent gold and antimony grades certainly reinforces the potential of the orebody…”
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A stacked, multi-lode system with grade improving at depth
Multiple hanging wall lodes confirm a broader mineralised corridor
CLG141 confirmed multiple new high-grade hanging wall lodes (secondary mineralised structures sitting above the main lode) above the principal mineralised structure. This establishes Clarks Gully as a stacked, multi-lode system rather than a single-lode target, meaningfully broadening the scale of what the deposit could ultimately represent.
The hanging wall lode intercepts from CLG141 include:
- 4.4m @ 12.81g/t AuEq from 157.8m, including 0.4m @ 90.99g/t AuEq from 161.8m
- 6.0m @ 11.97g/t AuEq from 219.0m, including 0.8m @ 76.64g/t AuEq from 219.8m
- 7.0m @ 2.84g/t AuEq from 239.0m
- 2.0m @ 14.26g/t AuEq from 259.0m
- 1.0m @ 14.81g/t AuEq from 265.0m
- 17.0m @ 2.78g/t AuEq from 312.0m, including 0.5m @ 19.24g/t AuEq from 316.5m
Tungsten emerges as a persistent high-grade value driver
High-grade tungsten (WO3) mineralisation is proving persistent at depth and to the south of the current Clarks Gully MRE, establishing it as a meaningful value driver alongside the established gold-antimony system. Key tungsten intercepts from CLG141 include:
- 0.4m @ 11.13% WO3 from 161.8m
- 0.8m @ 9.47% WO3 from 219.8m
- 1.0m @ 3.38% WO3 from 260.0m
Metallurgical test work has already demonstrated approximately 90% tungsten recovery as a by-product, supporting the potential to produce a saleable tungsten concentrate (ASX release, 19 November 2025).
Larvotto has already defined an initial tungsten Mineral Resource at Hillgrove, providing a quantified baseline against which the depth extensions now being intersected at Clarks Gully will be measured when the updated MRE is completed.
| Hole ID | From (m) | Interval (m) | AuEq (g/t) | Highlight |
|---|---|---|---|---|
| CLG140 | 260.0 | 32.0 | 5.68 | Main lode intercept |
| CLG140 | 284.0 | 8.0 | 13.77 | High-grade zone within main lode |
| CLG141 | 339.4 | 29.1 | 6.06 | Main lode, ~100m down plunge of MRE |
| CLG141 | 349.3 | 8.7 | 14.83 | High-grade zone within main lode |
What is gold equivalent (AuEq) and why does it matter at Hillgrove?
AuEq, or gold equivalent, is a way of expressing the combined value of multiple metals in a single, comparable grade. Because Hillgrove contains gold, antimony, and tungsten, each with its own price point, quoting separate grades for each metal makes direct comparison between drill holes difficult. AuEq solves that by converting every metal into its notional gold equivalent, expressed in grams per tonne (g/t).
The formula used is: AuEq (g/t) = Au (g/t) + [Sb% × 2.48] + [WO3% × 8.06]. In practical terms, this means one percent of antimony in a rock sample adds 2.48 g/t to the AuEq grade, while one percent of tungsten trioxide (WO3) adds 8.06 g/t. The conversion factors reflect current metal prices — gold at US$3,900/oz, antimony at US$30,000/t, and tungsten at US$120,000/t — as well as estimated processing recoveries.
Tungsten’s high equivalency factor is why thin but very high-grade WO3 intercepts register so prominently in the AuEq numbers. The 0.4m @ 11.13% WO3 intercept in CLG141 translates to 90.99g/t AuEq precisely because tungsten at that grade carries exceptional value relative to its width. For investors comparing intercepts across a multi-commodity system like Hillgrove, AuEq provides the clearest like-for-like measure of grade significance.
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Updated MRE underway as Larvotto advances Clarks Gully toward production
The path forward at Clarks Gully involves three concurrent workstreams:
- Assays are pending for the final two holes in the 16-hole program, CLG142 and CLG143. Once received, all 16 holes will be incorporated into geological modelling and an updated Clarks Gully MRE, extending the resource model to reflect mineralisation beyond the current footprint and additional parallel structures.
- Advanced engineering and metallurgical studies are underway within granted Mining Lease ML1332 to support a maiden Mineral Reserve and a proposed underground mining application, with required reports and supporting data being prepared.
- Permitting has been initiated for a very low footprint underground operation at Clarks Gully, intended to bring the operation online as a secondary feed source for the Hillgrove processing plant, which is already in production as Australia’s largest antimony mine.
Beyond Clarks Gully, Larvotto is reviewing the broader tungsten potential across the Hillgrove mineral field following encouraging intercepts at multiple deposits, with Curry’s Block approved for drill testing. Growth at Clarks Gully, Blacklode, and the progression of the Midas Exploration Target collectively provide multiple pathways toward long-term resource expansion. With multiple drill rigs operating simultaneously across the project, the resource expansion programme at Hillgrove remains active and advancing on several fronts.
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