ARN.ASX: DD003B confirms both Nb-Rich Margin and REE-Rich Core

DD003B confirms both Nb-Rich Margin and REE-Rich Core

Stock	Aldoro Resources Ltd (ARN.ASX)
Release Time	5 Jun 2026, 9:01 a.m.
Price Sensitive	Yes

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Aldoro Resources Confirms High-Grade Niobium at Kameelburg

Key Points

DD003B confirms high-grade niobium at the carbonatite margin
High-grade niobium zones identified at the margin
High-grade REE-Sr zone found toward the centre of the intrusion
Results support upcoming Mineral Resource Estimate

Full Summary

Aldoro Resources Ltd has reported assay results from diamond drill hole DD003B at the Kameelburg REE-Strontium-Niobium Project in Namibia. The hole confirms the company's mineralisation-zoning model for the carbonatite, with high-grade niobium occurring at the margin of the intrusion and high-grade rare-earth mineralisation concentrated toward the centre. DD003B returned a cumulative 169.7m at 0.81% TREO, 3.21% SrCO3 and 0.43% Nb2O5, including several high-grade niobium sub-zones. The hole also intersected a high-grade REE-Sr zone of 5m at 2.94% TREO, 7.64% SrCO3 and 0.09% Nb2O5. These results validate the geological prediction that DD003B, drilled to the east across the margin of the intrusion, would preferentially sample the niobium-enriched beforsite phase, providing important vectoring and boundary control for the upcoming final Phase II Mineral Resource Estimate (MRE). The confirmation of a niobium-enriched margin grading inward to a rare-earth-rich core materially de-risks the geological model underpinning the upcoming MRE, which is anticipated to be released upon receipt of the remaining Phase II assays.