Aruma Resources (ASX:AAJ) has sharpened the copper story at Fiery Creek, with a new 3D geological and structural model identifying three priority Regions of Interest across the project.
The work pulls together mapping, drilling, geochemistry, magnetics, gravity and 3D inversion data into the first comprehensive geological model for the project.
More importantly, it has given Aruma a much clearer idea of where to look next.
Three targets move to the front
The new model highlights three priority areas where favourable host rocks, structural complexity and evidence of copper mineralisation all line up.
The first sits around the Fiery Creek prospect itself, where the Mt Oxide Chert marker horizon is folded and cut by faults.
The second covers the western structural corridor, including the Hellfire and Fenceline prospects.
The third sits in the northwest and takes in the Piper and Falcon prospect areas.
That gives Aruma three distinct positions to work up rather than one broad regional concept.
Figure 1: Aruma Resources Fiery Creek Project Regional Map with the current mines and prospects.
The Mt Isa comparison matters
One of the more interesting outcomes is the geological similarity between Fiery Creek and nearby copper systems such as Mt Oxide and Gunpowder.
The shared ingredients include the Mt Oxide Chert marker horizon, favourable dolomitic and carbonaceous host rocks, and complex folding and faulting.
Those structures matter because they may have acted as pathways and traps for mineralising fluids.
Aruma’s interpretation is that Fiery Creek could represent a parallel structural corridor to the trend that hosts those regional copper deposits.
That does not prove there is a deposit sitting underneath Fiery Creek, but it does make the next round of exploration considerably more focused.
From model to drill target
The point of the 3D work is simple.
Better geology should lead to better drilling.
Aruma can now visualise fault geometries, fold relationships and prospective stratigraphy in more detail, giving it a stronger basis to rank targets before spending capital on the drill bit.
That matters in a district like Mt Isa, where structure often controls where the better copper ends up.
Figure 2: Aruma Resources 3D view of Interpreted Faults, Mt Oxide Chert Marker Horizons, Known Prospects and Betts 2001 Cross Sections.
What comes next
The company now plans detailed geological remapping and regional sampling across Fiery Creek, Hellfire and Fenceline.
It also intends to investigate ferruginous drainage features, acquire higher-resolution magnetic data where needed and complete further inversion modelling.
The ultimate goal is to move the best targets toward drill testing.
The new model has done its job, now Aruma needs the fieldwork to turn those 3D targets into drill-ready copper opportunities.
