Aruma Resources Ltd (ASX:AAJ) has sharpened its exploration focus at the Tillex Copper-Silver Project in Ontario, with a new electromagnetic (EM) survey confirming strong conductive targets that extend both the depth and strike potential of the high-grade system.
The fixed loop time domain electromagnetic (FLTDEM) survey has identified two significant conductors, reinforcing Tillex as a growing copper-silver opportunity and providing clear targets for an imminent maiden drilling program.
Managing director Grant Ferguson said the results had delivered on key objectives, with “multiple coherent conductors” highlighting both continuity and new upside beyond the known mineralised footprint.
Strong conductors expand footprint
The survey defined a Main Conductor extending over approximately 600 metres of strike — around 180 metres beyond the current drill-defined mineralisation — and continuing to at least 400 metres depth, where it remains open.
Plan view of EM Survey Modelled Contour Plan of the Main Conductor with survey lines shown.
“The Main Conductor is coincident with the very high-grade copper-silver mineralisation identified in previous drilling to an interpreted depth of 400 metres below surface, which is 250 metres below the deepest copper intersection,” Ferguson said.
A second East Conductor, located immediately adjacent to the main system, shows strong conductivity and a strike length of more than 200 metres, with modelling indicating it sits at a depth of around 120 metres.
Plan view of EM Survey Modelled Contour Plan of the East Conductor with survey lines shown.
“The East Conductor is a very strong electromagnetic conductor, which further adds to the project’s immediate copper-silver upside potential along strike and at depth,” Ferguson said.
“Both conductors represent a compelling foundation for our maiden drilling program, which is planned to commence this month.”
EM Survey Modelled Conductor Plate dimensions.
The EM program — conducted across a 1.4-kilometre-by-500-metre loop with tightly spaced survey lines — was specifically designed to test for extensions at depth and along strike, as well as identify new conductive targets indicative of copper sulphide mineralisation.
Drilling to begin this month
Aruma is now preparing to translate these geophysical targets into drilling, with a first-phase program scheduled to begin this month.
The campaign will include downhole EM surveys aimed at refining conductor positions and testing mineralisation potential at depths beyond 400 metres.
The work marks a key step forward following Aruma’s acquisition of the Tillex project earlier this year, which hosts a history of high-grade copper-silver drilling from previous operators.
Results from that historic work, totalling more than 10,000 metres of drilling, underpin the current exploration model and have now been complemented by the new EM dataset.
Long Section View of significant historic drilling intersections with the depth and strike extent modelled by the EM Survey at the Main Conductor.
The Tillex update adds to a steady stream of activity across Aruma’s broader exploration portfolio.
In recent months, the company has expanded the mineralised footprint at its Saltwater gold project in Western Australia’s Pilbara region, while also confirming heavy mineral sands assemblages at the Wilan project.
Targeting scale in a tier-one district
Located in the prolific Timmins mining district in Ontario, Tillex sits within a globally recognised mineral belt known for large-scale base and precious metal deposits.
The latest EM results suggest the project may host a more extensive mineralised system than previously defined, with both depth extensions and new parallel structures now emerging as priority targets.
With drilling imminent, Aruma is entering a critical phase that will test the scale and continuity of the Tillex system — and determine whether the newly defined conductors translate into further high-grade copper-silver discoveries.
Regional location map showing Tillex Project within the Timmins mining district, Ontario, Canada.