Trek Metals Confirms Shallow High-Grade Manganese at Kuro Prospect
Key Takeaways
- Trek Metals' maiden 72-hole RC program at Kuro returned 38 holes with significant manganese intercepts above 5% Mn, with 19 holes averaging above 20% Mn — confirming a high-grade system, not an isolated anomaly.
- All significant intercepts occur within 37 metres of surface, a geometry that makes open-pit mining methods a realistic development scenario and reduces projected capital intensity.
- Standout intercepts include 15m @ 20.5% Mn with a peak 1m assay of 55.1% Mn, and 6m @ 27.5% Mn including 3m @ 41.1% Mn — results that sit well above typical high-grade thresholds for this deposit style.
- Phase 2 assay results are expected within 6–8 weeks, targeting newly generated IP geophysical anomalies surrounding the Phase 1 discovery area and representing the most immediate catalyst for TKM investors.
- The Christmas Creek Project sits within an interpreted ~30km prospective Neoproterozoic basin, with the Leviathan prospect returning a 24.6% Mn surface rock chip and airborne magnetic data currently being processed — positioning this as a potential district-scale story beyond Kuro alone.
Phase 1 drilling confirms shallow, high-grade manganese system at Kuro
Trek Metals (ASX: TKM) has completed its maiden Phase 1 Reverse Circulation (RC) drilling program at the Kuro prospect, delivering results that confirm a shallow, high-grade manganese system at its 100%-owned Christmas Creek Project in Western Australia. The final assay batch brings the program-wide tally to 38 of 72 holes returning significant manganese intercepts above 5% Mn, with 19 of those holes averaging above 20% Mn.
All significant intercepts occur between surface and just 37m downhole, a geometry that carries meaningful economic implications for any future development scenario. Standout results from this final assay batch include:
- 15m @ 20.5% Mn from 6m (incl. 7m @ 32.3% Mn from 8m, with a peak 1m assay of 55.1% Mn) in 26XCRC065
- 6m @ 27.5% Mn from 12m (incl. 3m @ 41.1% Mn from 13m) in 26XCRC064
- 14m @ 19.5% Mn from 10m (incl. 5m @ 34.6% Mn from 11m) in 26XCRC051
- 12m @ 17.6% Mn from 8m (incl. 3m @ 29.0% Mn from 15m) in 26XCRC059
- 8m @ 19.8% Mn from 8m (incl. 2m @ 40.1% Mn from 9m) in 26XCRC058
It is important to note that this announcement reports Exploration Results only. No Mineral Resource has been estimated for the Kuro Prospect, and further drilling and evaluation is required before that becomes possible.
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What the Kuro results mean — understanding high-grade manganese
For investors without a geology background, the significance of these numbers deserves some context. Here are the key concepts at work:
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What manganese is used for. Manganese is a critical input in two large industrial markets: steelmaking, where it is used to harden steel alloys, and battery technology, where manganese is used in cathode materials for electric vehicle and energy storage applications.
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Why grade matters. The percentage figure (Mn%) tells you how much manganese is present in the rock by weight. Higher grades mean less waste rock to process and lower processing costs to extract a tonne of usable metal. Intercepts averaging above 20% Mn are considered high-grade for this style of deposit.
The manganese discovery at Christmas Creek has produced peak single-metre assays well above typical high-grade thresholds, with earlier program results returning values exceeding 58% Mn and reinforcing the system’s potential for exceptional local enrichment.
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What “shallow” means for project economics. All significant intercepts at Kuro sit between surface and 37m downhole. Mineralisation this close to surface is potentially accessible via open-pit mining methods, which typically carry lower capital costs and simpler logistics than underground mining.
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How RC drilling works and why 72 holes matter. Reverse Circulation (RC) drilling sends compressed air down the outside of the drill string and returns rock chips to surface through an inner tube, giving geologists a clean sample every metre. Running 72 holes across the Kuro prospect builds a three-dimensional picture of where the mineralisation sits and how it behaves — providing meaningful confidence in the system’s geometry.
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The cautionary note. The source announcement is explicit: no Mineral Resource has been estimated, and it remains uncertain whether further exploration will result in one. What Phase 1 has delivered is an encouraging body of Exploration Results, not a declared resource.
The mineralisation at Kuro is interpreted to represent structurally controlled hydrothermal “Woodie Woodie” style mineralisation, hosted in Neoproterozoic basin sediments overlying the Paleoproterozoic basement. This is a recognised style of high-grade manganese deposit in Australia, which provides useful geological framing for the discovery.
CEO perspective and standout intercepts
Derek Marshall, CEO, Trek Metals
“The final batch of drill assays from Phase 1 provide further evidence that Kuro is a significant shallow, high-grade manganese discovery. We are now looking forward to receiving the results from Phase 2, which targeted newly generated Induced Polarisation (IP) geophysical anomalies within an area surrounding the Phase 1 drill area.”
The table below summarises the standout intercepts from this final assay batch, verified directly from Table 1 of the announcement:
| Hole ID | From (m) | Width (m) | Mn (%) | Key Sub-Interval |
|---|---|---|---|---|
| 26XCRC065 | 6m | 15m | 20.5% | incl. 7m @ 32.3% from 8m |
| 26XCRC064 | 12m | 6m | 27.5% | incl. 3m @ 41.1% from 13m |
| 26XCRC058 | 8m | 8m | 19.8% | incl. 2m @ 40.1% from 9m |
| 26XCRC059 | 8m | 12m | 17.6% | incl. 3m @ 29.0% from 15m |
| 26XCRC051 | 10m | 14m | 19.5% | incl. 5m @ 34.6% from 11m |
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What’s next — Phase 2 results, Leviathan, and a 30km basin to explore
Phase 2 assays due in 6–8 weeks
Phase 2 drilling has been completed, targeting newly generated Induced Polarisation (IP) geophysical anomalies surrounding the Phase 1 discovery area. Assay results are expected within 6–8 weeks, making this the most immediate catalyst for TKM investors watching the Christmas Creek story develop. The Coogan copper-gold prospect also has samples at the laboratory, along with numerous regional targets.
Leviathan prospect shows early promise
At the Leviathan prospect, a recently completed ground-based IP survey has identified a large discrete chargeability anomaly that appears to correlate with an outcropping sedimentary unit within the Ruby Plains Group. A manganese-rich rock chip collected in the vicinity returned a peak result of 24.6% Mn (Table 4 of the announcement), providing early encouragement that the broader basin may host additional mineralised targets.
This is early-stage work. The announcement is clear that additional fieldwork is required, followed by a heritage survey, before this target can be properly evaluated. The current results provide encouragement rather than confirmation, and investors should frame Leviathan accordingly.
High-resolution magnetic and radiometric data to refine targets
A fixed-wing magnetic and radiometric survey has recently been completed over the interpreted ~30km prospective Neoproterozoic basin at Christmas Creek. The data is currently being processed. Ground reconnaissance has commenced across the broader land holding this week.
The pipeline of catalysts now in motion includes:
- Phase 2 assays: expected within 6–8 weeks
- Leviathan IP anomaly: heritage survey required before drill testing can proceed
- Airborne magnetic and radiometric data: processing underway
- Coogan copper-gold prospect: samples at the laboratory
- Regional targets: reconnaissance commenced across the interpreted ~30km basin
The systematic approach — completing Phase 1, running Phase 2, adding airborne geophysics, and beginning reconnaissance across a largely untested district — reflects a methodical expansion of the exploration program well beyond the original Kuro drill area.
The Kuro manganese basin sits within an interpreted ~30km prospective Neoproterozoic corridor, a scale that positions the Christmas Creek project well beyond a single-prospect story and into potential district-scale territory.
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