PTR Minerals Confirms Strong Final Assays at Rosewood East Ahead of Maiden Resource

Final Assays Reinforce Rosewood East Potential

PTR Minerals Limited (ASX:PTR) has completed receipt of the final batch of assay results from its Rosewood East drilling program, delivering a strong finish to a campaign that continues to reveal shallow, thick, and high-grade heavy mineral (HM) mineralisation. Notable intercepts include 9 metres at 18.2% HM from 8 metres depth, including 6 metres at 26.5%, and a standout 4-metre interval grading 43.6% HM. These results underpin the company's confidence in the quality and scale of the deposit ahead of its maiden Mineral Resource Estimate (MRE), scheduled for release in Q2 2026.

With 134 drill holes assayed in this batch alone, the data confirms the consistent nature of the mineralisation starting from very shallow depths, a factor that bodes well for future mining economics. The mineralisation’s thickness and grade align with previous drilling phases, reinforcing the project's foundation as a high-quality titanium resource. PTR’s CEO Peter Reid highlighted the strength of these results, emphasising the project's “strong grades, thickness, and near-surface accessibility” as key attributes advancing Rosewood towards development.

Resource and Metallurgical Progress

The Rosewood East area, fully owned by PTR Minerals, has been the focus of a systematic drilling program totalling 799 holes and over 20,700 metres, designed to support a JORC-compliant resource estimate. The current assay campaign complements ongoing mineralogical and metallurgical test work, including XRF and QEMSCAN analysis, aimed at quantifying the TiO2 mineral assemblage and optimising processing pathways. These studies are critical for confirming product quality and recovery rates, with preliminary tests indicating strong potential for producing premium titanium products.

Meanwhile, assays from Rosewood West, a joint venture between PTR (70%) and Narryer Metals (ASX:NYM) (30%), remain outstanding. Their completion will provide a more comprehensive picture of the overall Rosewood Titanium Project’s resource base. The company’s strategic approach to advancing both tenements reflects a broader push to unlock value from its critical minerals portfolio in South Australia, which also includes copper, gold, and rare earth projects in the Olympic Copper-Gold Province and other regions.

Drilling Methodology and Data Integrity

PTR’s air core drilling methodology, employing vertical holes with representative 25% sample splits, has delivered high-quality data with excellent recoveries. The sampling and assay procedures, conducted by industry-leading Diamantina Laboratory in Western Australia, incorporate rigorous quality control measures including standards, duplicates, and laboratory repeats. The data has been verified by experienced geologists and compiled in a comprehensive database, ensuring robustness for resource estimation.

The drilling targets flat-lying fluvio-deltaic marine sediments with mineralisation interpreted as relatively continuous and consistent across the grid. This geological setting, combined with the shallow depth of mineralisation, supports the potential for economically viable extraction. The detailed collar locations and assay intervals have been published, providing transparency and granularity to the market.

This latest batch of results ties into the company’s steady progress reported in previous updates, including high-grade drilling and metallurgical gains and promising initial metallurgical test outcomes, which collectively have kept the maiden JORC resource estimate on track.