Renascor Resources Identifies Multiple Copper Targets at Flat Hill
Key Takeaways
- Renascor's VTEM airborne survey across 1,443 line-kilometres at Flat Hill has identified multiple high-priority copper drill targets at shallow depths of approximately 150–300m within the Adelaide Rift Complex.
- Northern targets at Boorloo and Breaden Hill sit adjacent to historical copper intersections including 134m @ 0.57% Cu and 18m @ 1.57% Cu from surface, providing geological context for the new geophysical anomalies.
- Southern targets Mayflower and West Willouran feature large conductive features identified by the survey that remain completely untested by any historical drilling, representing genuinely open ground.
- Drilling of the highest-priority targets is being planned, subject to Native Title Mining Agreement execution with the Arabana Country traditional owners — negotiations are described as advancing toward execution.
- Renascor held approximately $94 million in cash as at 30 June 2026, alongside a conditionally approved $185 million government loan facility, providing a strong financial base to fund the exploration programme without near-term capital pressure.
VTEM survey unlocks multiple copper drill targets at Flat Hill
Renascor Resources has completed a Versatile Time Domain Electromagnetic (VTEM) airborne survey at the Flat Hill area within its Marree Project in South Australia, identifying multiple high-priority copper drill targets. The results, covering exploration licence EL 6549 within the Adelaide Rift Complex, reinforce the potential for a large-scale copper mineralised system rather than isolated mineral occurrences. Modelling indicates the targets sit at relatively shallow depths of approximately 150–300m.
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Flat Hill copper targets: what the VTEM survey revealed
The survey used the VTEM™ Max system, a high-resolution airborne geophysical tool that measures electromagnetic responses in the subsurface to identify conductive features associated with sulphide mineralisation. The results identified two distinct clusters of targets within Flat Hill.
The northern targets, located near Boorloo and Breaden Hill, sit close to historical drilling that already confirmed significant copper mineralisation across a zone spanning approximately 3km. The southern targets, Mayflower and West Willouran, feature large conductive features identified by the survey that remain completely untested by historical drilling.
Key historical copper intersections in the northern zone include:
- 18m @ 1.57% Cu from surface at Breaden Hill (including 6m @ 2.5% Cu from 2m)
- 134m @ 0.57% Cu from 26m at Boorloo (including 28m @ 1.11% Cu from 128m)
- 10m @ 1.30% Cu from 34m at Boorloo
These are historical results sourced from previous explorers. Renascor has reviewed the available historical information but has not independently verified these results.
| Prospect | Drill Hole | Interval (m) | Grade (% Cu) | Depth From (m) |
|---|---|---|---|---|
| Breaden Hill | WP018 | 18m | 1.57% Cu | Surface |
| Breaden Hill | WP018 (incl.) | 6m | 2.5% Cu | 2m |
| Boorloo | WP015 | 134m | 0.57% Cu | 26m |
| Boorloo | WP015 (incl.) | 28m | 1.11% Cu | 128m |
| Boorloo | WP029 | 10m | 1.30% Cu | 34m |
Note: These are historical results sourced from previous explorers. Renascor has reviewed but not independently verified these figures.
Managing Director David Christensen
“The VTEM results have given us clear copper drill targets at Flat Hill. Several are close to significant historical copper intersections at Boorloo and Breaden Hill, while others, including Mayflower and West Willouran, offer opportunities to test areas with little previous drilling…”
Why VTEM matters for copper exploration
The VTEM™ Max system works by transmitting an electromagnetic pulse into the ground and measuring the decaying response from conductive subsurface features, allowing geologists to detect sulphide mineralisation that sits beneath the weathered surface zone. It is essentially a way to see what lies beneath ground that earlier, shallower exploration programs never reached.
That distinction matters at Flat Hill. Previous exploration was largely focused on surface-visible stratigraphic horizons, leaving substantial areas of the project untested by modern techniques. The VTEM survey specifically targeted potential primary copper sulphide mineralisation at depth, opening up a new dimension of the project.
Renascor’s review also identified a meaningful shift in exploration model. Structural features present throughout Flat Hill, including extensive faulting, brecciation, and diapiric activity, were historically viewed as complications that disrupted predictable stratigraphic targets. Renascor now interprets these same structures as potential pathways that may have localised and concentrated copper mineralisation, making them an important focus for future drilling rather than obstacles to avoid.
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Next steps and broader portfolio context
Drilling of the highest-priority VTEM targets is being planned, subject to land access. Native Title negotiations with the traditional owners of Arabana Country are advancing toward execution of a Native Title Mining Agreement, which Renascor will require prior to undertaking on-ground exploration activities. The survey itself covered 1,443 line-kilometres across three blocks, giving a sense of the programme’s scale.
Beyond Flat Hill, Renascor is advancing exploration across its broader South Australian portfolio:
- Arno Bay: TEMPEST airborne electromagnetic survey completed over approximately 487 line-kilometres; interpretation underway
- Tumby Bay: Mineralogical assessment of rare earth drill results underway, including a result of 1.55m @ 11,796 ppm total rare earth oxides (TREO)
- Wooltana: Hyperspectral analysis flagged uranium prospectivity features based on comparison with surface expression near the Beverley uranium deposit
- Olary: Evaluating gold and copper targets within its tenement adjacent to the White Dam Gold Mine; land access discussions underway
Underpinning all of this exploration activity is a solid financial position. Renascor held approximately $94 million in cash as at 30 June 2026, alongside a conditionally approved $185 million loan facility from the Australian Government’s Critical Minerals Facility, which is tied to the company’s flagship Siviour Battery Anode Material project. That funding base provides the company with capacity to advance its exploration programmes without near-term capital pressure.
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