Exploration at Harts Range has validated the presence of high-grade Niobium, and Heavy Rare Earth mineralisation, with recent assay results from rock chip samples retuning up to 20.12% TREO, (inc 1.71% Dy2O3, 0.23% Tb4O7) with 4.79% Nb2O5 and 18.19% Ta2O5. Backed by a highly experienced team with a strong corporate and technical track record the Company is undertaking a systematic exploration strategy to identify additional Heavy Rare Earths and Niobium targets for drill-testing.
The 2025 airborne geophysical survey, interpreted by Southern Geoscience Consultants at 1:10,000 scale, identified 46 priority targets across the Harts Range Project, ranked on structural setting, magnetic response, uranium radiometric anomalism and proximity to mapped pegmatites. Only six have been drill-tested to date, leaving approximately 40 targets untested and representing substantial opportunities.
The Harts Range Project comprises two granted tenements and an application license for a total of 135km2, approximately 140km north-east from Alice Springs, with excellent mining infrastructure and access to a highly skilled labour pool.
The tenure is accessible for most of the year via a sealed highway and well-maintained pastoral tracks and is relatively easy to reach from major locations such as Perth via a short 2.5 hour flight and drive.
Tenure within the region is tightly held and benefits from the dominant presence of active neighbours including ASX-listed Independence Group (ASX: IGO).
Within the tenure, outcropping pegmatites host Niobium, and Heavy Rare Earth mineralisation, with recent rock chip results returning high-grade readings up to 20.12% TREO, (inc 1.71% Dy2O3, 0.23% Tb4O7) with 4.79% Nb2O5 and 18.19% Ta2O5 recorded across multiple prospects.
The Harts Range Project is situated northwest of the Entia Dome and lies within the Harts Range Group, a zone primarily composed of feldspar-biotite-amphibole-garnet gneisses.
The region has undergone significant crustal reworking between the Proterozoic and Palaeozoic eras, leading to its recognition as an ancient, heavily altered, and metamorphosed version of a continental collision zone
Magnetotelluric data analysed by geologists from Adelaide University and NTGS reveals that the Entia Dome system represents a deep-crustal structure extending down to the mantle
Prominent magnetic anomaly, ~150–200m in diameter and extending to a similar depth, located in the southern portion of EL32513 and spatially associated with a major east-west trending fault.
Interpreted as a larger eastern feature flanked by a series of smaller magnetic bodies to the west, with modelling indicating remanent magnetisation likely associated with the Irindina Gneiss and amphibolite, or alternatively a local intrusion.
New Frontier considers the anomaly prospective for copper mineralisation, with a potential pyrrhotite-bearing sulphide source at depth remaining a viable interpretation — consistent with recent BHP Xplor-backed research reframing the broader Harts Range as a district-scale copper-nickel system.
HREE – Niobium-Tantalum identified in pegmatites running east-west, up to 10m thick and over 70m long.
Numerous high grade rock chips with best results returning grades up to 17.83% TREO (inc 2.16% Dy2O3, 0.34% Tb4O7) with 33.19% Nb2O5 and 7.19% Ta2O5.
Very high HREO/TREO ratios up to 96.69% highlight the dominance of Dysprosium and Terbium—two highly valuable magnet rare earth elements (REEs).
The Cusp Prospect is located 1.6km along strike from Bobs, with similar mineralisation and geological setting.
HREE–Niobium–Tantalum mineralisation hosted in east–west trending pegmatites has led to the identification of two promising new prospects, Paddington and Westminster, located approximately 200m and 450m west of the mineralised Bobs Prospect.
Best results at Paddington include grades up to 10.61% TREO, (inc 1.28% Dy2O3, 0.22% Tb4O7) with 23.56% Nb2O5 and 15.67% Ta2O5.
Best results at Westminster include grades up to 7.46% TREO, (inc 0.53% Dy2O3, 0.05% Tb4O7).
