Aruma Resources Maps Three Copper Targets at Fiery Creek With New 3D Model
Key Takeaways
- Aruma Resources (ASX: AAJ) has completed an independent 3D geological and structural model at its 100%-owned Fiery Creek Copper-Gold Project in Queensland's Mt Isa copper belt, defining three new high-priority Regions of Interest (ROIs).
- The study, completed by Dr Tony Webster of GeoDiscovery Group, confirmed the presence of the Mt Oxide Chert marker horizon within Fiery Creek's tenure — the same host rock associated with major nearby copper deposits including Mt Oxide (ASX: TNC) and Gunpowder (ASX: 29M).
- Three distinct ROIs have been defined: the Fiery Creek Prospect southern portion, the Western Structural Corridor (incorporating Hellfire and Fenceline Prospects), and the Northwestern Stratigraphic Belt (incorporating Piper and Falcon Prospects).
- The study concluded Fiery Creek may represent a parallel structural corridor to the trend hosting the Mt Oxide and Gunpowder copper deposits — a geological validation of the project's exploration thesis, not a resource confirmation.
- Aruma has outlined six next steps including detailed remapping, regional sampling, higher-resolution magnetic data acquisition, and advancing priority targets toward drill testing.
New 3D model unlocks three priority copper targets at Fiery Creek
Aruma Resources (ASX: AAJ) has completed a project-wide geological study and new 3D geological and structural model at its 100%-owned Fiery Creek Copper-Gold Project in the Mt Isa copper belt, Queensland. The independent work, completed by Dr Tony Webster of GeoDiscovery Group, has defined three new high-priority Regions of Interest (ROIs) where favourable geology, structural complexity and evidence of copper mineralisation coincide.
This is a targeting framework upgrade, not a drill result. What the study provides is a significantly improved understanding of the geological architecture at Fiery Creek and a clearer basis for prioritising future field programs and drilling.
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What the 3D model revealed
Three regions of interest defined
The review identified three standout areas across the Fiery Creek Project tenure:
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ROI 1 — Fiery Creek Prospect (southern portion): Significant structural complexity where the Mt Oxide Chert host rocks are folded and intersected by fault systems. Historical reconnaissance drilling has identified ferruginous fault zones carrying anomalous copper values, with mineralisation interpreted to extend at depth.
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ROI 2 — Western Structural Corridor: A broad zone of structural complexity along the western margin of the project, incorporating the Hellfire and Fenceline Prospects. The corridor contains thickened packages of prospective stratigraphy, including chert, dolomitic and carbonaceous sedimentary units, along with distinctive ferruginous drainage features considered worthy of further investigation.
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ROI 3 — Northwestern Stratigraphic Belt: The northwestern portion of the project contains repeated occurrences of prospective chert, dolomitic and carbonaceous units together with recorded copper occurrences. The Piper and Falcon Prospects lie within this corridor, which has been prioritised for follow-up exploration.
Key geological findings from the independent review
GeoDiscovery Group’s findings confirm that Fiery Creek contains many of the geological ingredients associated with significant structurally hosted copper deposits within the Mt Isa Inlier. The five key conclusions were:
- Identification of occurrences of the Mt Oxide Chert marker horizon within the Fiery Creek tenure
- Associated dolomitic and carbonaceous sedimentary units recognised as favourable copper host rocks
- Multiple zones of structural complexity generated by folding and faulting identified at Fiery Creek
- Extensive late-stage northeast-southwest faulting that may have acted as pathways for mineralising fluids
- Existing copper occurrences and anomalous copper values associated with fault structures
Grant Ferguson, Managing Director
“The completion of this independent structural review and 3D geological model is a significant milestone for the Fiery Creek Project… The new 3D model substantially enhances our understanding of the project’s structural controls and will play a critical role in targeting future exploration and drilling programs.”
Why Fiery Creek draws comparisons to Mt Oxide and Gunpowder
The Mt Oxide Chert is a distinctive rock unit that serves as a geological marker horizon across the Mt Isa district, meaning its presence helps geologists recognise the same stratigraphic sequence that hosts major copper deposits nearby. Finding it within Fiery Creek’s tenure is significant because it confirms the project shares the same geological building blocks as known mineralised systems in the region.
The Fiery Creek copper potential has been building through successive exploration programs, with historical reconnaissance drilling and geochemical sampling establishing the anomalous copper values that the new 3D model now frames within a coherent structural context.
“Structurally hosted” copper mineralisation refers to copper that has been concentrated along faults and fold axes rather than sitting in flat-lying sedimentary layers. In practical terms, this means the highest-grade targets tend to occur at points where structures intersect or where fluids were focused and trapped, which is precisely what the 3D model has now helped to map at Fiery Creek.
The study concluded that Fiery Creek may represent a parallel structural corridor to the trend hosting the nearby Mt Oxide (True North Copper, ASX: TNC) and Gunpowder (29Metals Limited, ASX: 29M; Capricorn Copper) copper deposits. For investors, this is geological validation of the project’s targeting rationale, not a resource confirmation, but it provides a credible exploration thesis grounded in regional analogues.
| Feature | Mt Oxide / Gunpowder | Fiery Creek |
|---|---|---|
| Mt Oxide Chert presence | Present — key host horizon | Confirmed within project tenure |
| Structural complexity (folding/faulting) | Characteristic of deposit style | Multiple zones identified across three ROIs |
| Fluid pathway potential | Potential pathways and traps for mineralising fluids | Extensive late-stage northeast-southwest faulting identified |
| Parallel structural corridor interpretation | Established trend hosting known deposits | Study concludes Fiery Creek may represent a parallel corridor |
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Next steps and what investors should watch
Aruma has outlined six planned next steps based on the outcomes of the review:
- Undertake detailed geological remapping across priority target areas
- Conduct regional mapping and sampling programs at the Fiery Creek, Hellfire and Fenceline Prospects
- Investigate ferruginous drainage features identified during the review
- Acquire higher-resolution magnetic data where appropriate
- Complete additional inversion modelling to further define fault geometries and stratigraphic relationships at depth
- Advance priority targets towards drill testing
The 3D model will continue to be refined as additional geological data is acquired. The new geological framework is intended to provide a structured, data-driven foundation for the next phase of exploration, aimed at discovering significant structurally hosted copper mineralisation across the broader Fiery Creek Project area.
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