Harts Range Heavy Rare Earth, Niobium and Tungsten Project Geophysics and Drilling Collaborations Program - Round 18

Abstract

New Frontier Minerals Limited (ASX: NFM) holds Exploration Licences EL 32046 and EL 32513 at the Harts Range Heavy Rare Earth, Niobium and Tungsten Project, located approximately 140 km northeast of Alice Springs in the Northern Territory, covered by the 1:100,000 Quartz (5591) and 1:250,000 Illogwa Creek (SF5315) mapsheets. The project was granted and has been actively explored during the reporting period 1 January 2024 to 31 March 2026, targeting heavy rare earth elements (HREE: Dy, Tb, Y), niobium, tantalum, tungsten and uranium hosted in Proterozoic NYF pegmatite dykes within the Harts Range Metamorphic Complex of the Arunta Province. A maiden reverse circulation (RC) drilling program comprising 27 holes for 1,803 m completed by contractor GeoDrill in December 2025, testing six priority target prospects (Headingley, Cusp, Bobs, Paddington, Westminster and Bank). Drill samples were collected at 1 m intervals and composited to 4 m for assay. Key results: HRRC025 returned 4,860 ppm WO3 over 1 m at 132-133 m (sample NFM00735) at the Bank Prospect, confirming drilled tungsten mineralisation for the first time at Harts Range. HRRC012 at the Cusp Prospect returned Nb2O5 4,210 ppm, Dy2O3 172 ppm and estimated TREO 7,481 ppm (0.75%) at 53-54 m (sample NFM00350), representing the highest confirmed HREE result in the program. All other holes returned background HREE, Nb and W values. No JORC-compliant mineral resources have been estimated at this stage. Recommended next steps include systematic soil sampling along northwest-southeast prospective corridors and follow-up drilling at the Cusp and Bank prospects with improved azimuth and inclination.