PLC Resources Airborne Survey Uncovers Major Gold Corridor at Abbotts North

PLC Resources Maps a Large Undrilled Gold Target Corridor at Abbotts North

PLC Resources Limited (ASX: PLC) has reported that a high-resolution airborne magnetic and radiometric survey at its Abbotts North Gold Project, about 35 km north of Meekatharra in Western Australia, has identified a large fold structure along the eastern margin of the Abbotts Greenstone Belt. This structure was not recognised in earlier regional mapping. The newly interpreted feature defines an extensive and largely untested gold exploration corridor, while assay results from the company's maiden RC drilling at Rochefort are expected within weeks.

For investors, the update matters because it expands the project from a single drill-tested prospect into a broader belt-scale exploration story. PLC stated that the entire eastern margin has seen no drilling and no systematic soil sampling, meaning the new structural target has yet to be directly tested.

"The results of this survey genuinely open a new chapter for PLC's Abbotts North project," said Simon Phillips, Executive Director. "We came in looking to build a target pipeline, and what the interpretation has revealed is a large, previously unmapped fold structure along the entire eastern margin of the belt. The Company intends to move quickly."

What the Airborne Survey Identified

The survey was flown by MagSpec Airborne Surveys between 6 June and 14 June 2026, covering 4,536 line kilometres. It used 50 m line spacing and a nominal terrain clearance of 30 m, providing considerably higher detail than pre-existing regional magnetic data.

This dataset has improved PLC's understanding of lithological contacts, structural architecture, and magnetic domains across the project area. In practical terms, the survey has given the company a clearer picture of the rock units and the faults and folds that may control where gold mineralisation occurs.

The central finding was a large antiform along the eastern margin of the Abbotts Greenstone Belt. An antiform is an upward-arching fold in the rocks. According to PLC, the feature has a traceable hinge zone and clearly defined limbs, and it was absent from previous 1:100,000 regional geological mapping and not evident in historical regional magnetic data.

The company's preliminary interpretation indicates:

• More than 8 km of strike along the eastern limb
• More than 6 km of strike along the western limb
• A hinge zone sitting next to an interpreted deep-seated east-west crustal structure
• A spatial relationship with a younger Proterozoic dyke, which the company says marks that crustal feature

PLC stated that this structural arrangement is widely recognised across the Yilgarn Craton as a favourable setting for orogenic gold mineralisation.

Survey Specifications

Why the Eastern Belt Margin Is Attracting Attention

The strongest point in the announcement is not only the size of the interpreted structure, but also the lack of past exploration across it. PLC confirmed there is no evidence of historical drilling along the eastern margin within its tenure, while only limited soil sampling has been completed and its effectiveness is considered uncertain because of surface cover.

That matters because greenstone belts in Western Australia are mature exploration districts. Finding an area with a coherent structural setting and minimal historical testing is relatively uncommon. In this case, PLC believes the target was overlooked because the structural framework had not previously been defined.

Furthermore, the integration of the new survey with adjacent open-file data has outlined a continuous interpreted structural corridor extending southward toward areas with known gold occurrences. PLC cautioned that magnetic data cannot confirm mineralisation on its own, but stated that the continuity of the geological setting may support follow-up exploration and drill testing.

Nearby Deposits Provide Geological Context

PLC referenced nearby gold deposits and prospects within the same belt, including New Murchison Gold's Crown Prince deposit, Youngs, and Lydia. According to the announcement, preliminary interpretation suggests these prospects sit within the limbs of the same broad fold system.

These nearby deposits serve as geological reference points within the Abbotts Greenstone Belt. They are not PLC resources, and the announcement does not suggest they guarantee similar outcomes on PLC's tenure.

Why Fold Hinges and Major Faults Matter in Gold Exploration

For non-specialist investors, this part of the update is particularly important. The survey result is not being highlighted simply because a fold was mapped. It is being highlighted because of where that fold sits and how it interacts with deeper structures.

What Is Orogenic Gold?

Orogenic gold refers to gold deposits formed during periods of crustal deformation, when fluids move upward through major faults and fractures. As those fluids pass through suitable structural traps in the rocks, gold can be deposited.

This style of mineralisation is common across the Yilgarn Craton, one of Western Australia's major gold provinces. Many deposits in the Murchison and Kalgoorlie regions are linked to this structural process.

Why Structural Geometry Is Important

According to PLC, the newly interpreted antiform hinge sits next to a deep east-west crustal structure. That combination is relevant because:

• Fold hinges can create zones of dilation where mineral-bearing fluids may accumulate
• Crustal-scale faults can act as fluid pathways, bringing those fluids up from depth
• Intersections of folds and faults are often treated as high-priority exploration sites, combining fluid access with structural traps

At Abbotts North, PLC stated that two major east-west crustal-scale structures transect the fold. The northernmost is adjacent to the fold hinge and the company's Triple Junction target, where a 6.7 g/t Au rock chip was previously reported.

Glossary of Key Terms

Rochefort Remains the Near-Term Catalyst

While the broader structural story has expanded, the announcement also pointed to a nearer-term event for the market: pending assay results from the maiden RC drilling programme at the Rochefort Gold Prospect.

PLC said Rochefort sits near the northern margin of the belt and may represent the northern extension of the same larger antiform complex. The prospect had already been advanced through a staged exploration process before drilling commenced.

According to the announcement, previous work at Rochefort included:

1. Rock chip results of up to 11.7 g/t Au from north-south trending quartz-hematite veins
2. A coherent approximately 400 m by 350 m gold-in-soil anomaly with peak values up to 30 ppb Au
3. UltraFine™ survey results extending the anomaly beneath shallow cover, with a peak of 42.9 ppb Au
4. A ground gravity survey completed in March 2026 confirming a structurally favourable setting
5. A maiden RC drilling programme of 5 holes for 1,018 m completed in May 2026

PLC described the Rochefort programme as the first modern gold exploration drilling completed within the project area. Assays are expected in the coming fortnight, according to management.

Rochefort Work Summary

For investors, Rochefort provides a short-term news catalyst, while the eastern margin target adds a larger and earlier-stage exploration opportunity to the portfolio.

What the Company Plans to Do Next

In the announcement, PLC outlined a defined next-step programme focused on converting the airborne survey interpretation into drill targets. The company said it intends to move quickly, starting with detailed interpretation and ground-based follow-up.

Planned Work Programme

This approach is notable because the company is not relying on a single exploration method. If cover limits the usefulness of soil sampling, PLC stated it may move selected targets directly to aircore drilling — a shallow drilling method commonly used to test concealed geochemical and structural targets in Australian gold exploration.

Why the Abbotts North Update Matters to Investors

The announcement changes the scale of the Abbotts North story considerably. Before this survey, market attention was centred on Rochefort as a standalone prospect. The new interpretation now points to a belt-margin structural corridor with more than 14 km of combined strike across both limbs, adjacent to known gold occurrences in the same greenstone belt.

Several factors stand out from an investor perspective:

• Proven regional setting: The Abbotts Greenstone Belt hosts existing gold deposits and a producing mine at Crown Prince
• Large new target area: The interpreted fold adds substantial strike length and expands the company's target inventory
• Minimal historical testing: PLC says the eastern margin is effectively untested by systematic modern exploration
• Structural relevance: The fold hinge and east-west crustal feature fit a recognised structural model for Yilgarn gold systems
• Near-term newsflow: Rochefort assays are expected shortly
• Follow-up work already planned: Ground reconnaissance and target generation are underway

That combination gives the project both immediate and longer-dated interest. The assay results from Rochefort may influence short-term market attention, while the airborne survey provides the basis for a more extensive exploration campaign across the eastern side of the belt.

According to PLC's ASX announcement, the Abbotts North survey has defined a large, previously unrecognised structural corridor in a proven gold belt, with the eastern margin still lacking drilling and systematic surface testing. Combined with pending Rochefort assays, the update adds both a near-term catalyst and a broader exploration pipeline for the company's Western Australian gold portfolio.

The Broader Read-Through for ASX Gold Exploration

This update also highlights a broader exploration theme in WA gold: high-resolution geophysics can materially improve targeting even in mature districts. In areas where surface exposure is poor and earlier datasets were collected at wider spacing, modern magnetic surveys can refine the geological picture and identify structures that were not previously mapped.

However, that does not confirm mineralisation, and PLC makes that distinction clearly in the announcement. What improved geophysics can do is improve the odds of placing follow-up drilling in the right structural setting. At Abbotts North, that appears to be the immediate outcome of the survey.

For PLC Resources, the next test will be whether pending Rochefort assays and planned follow-up on the eastern corridor support the structural interpretation set out in the latest announcement.

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