NFM Accelerates Harts Range Exploration

New Frontier Minerals Ltd (LSE and ASX: NFM) is pleased to advise that its geological field teams will return to the Harts Range Heavy Rare Earths and Niobium Project ("Harts Range" or the "Project"), located approximately 140 km north-east of Alice Springs in the Northern Territory. With only six of approximately 46 priority targets drill-tested to date, the upcoming field programme will focus on advancing the assessment of the approximately 40 remaining untested targets, with initial activities centred on the high-priority Kings Cross Prospect.

Highlights

• NFM's geological team will return to the Harts Range Project in July 2026 to commence the next phase of field activities, including systematic evaluation of high-priority exploration targets across the project area
• Of the 46 priority geophysical targets identified by Southern Geoscience Consultants, only six have been drill-tested to date, leaving 40 high-priority targets available for follow-up exploration 1
• The upcoming field programme will prioritise the Kings Cross Prospect, a prominent magnetic anomaly measuring approximately 150-200 metres in diameter and extending to a similar depth 4
• Field activities at Kings Cross will include detailed geological mapping, rock-chip sampling and ground-truthing to refine the geological model and assess the source of the magnetic anomaly
• Recent BHP Xplor-backed research released by Litchfield Minerals (ASX: LMS) reframes the broader Harts Range as an emerging district-scale Copper-Nickel-PGE mineral system with significant discovery potential3
• The Harts Range region remains highly prospective for HREE, Niobium and Tungsten mineralisation, reinforcing the strategic significance of New Frontier's extensive tenure position

Chairman Gerrard Hall commented: ""With only six of our forty-six priority targets drill-tested to date, we have recommenced our field activities at Harts Range. The return of our field team in July will allow us to systematically validate the remaining targets, with Kings Cross, Bank and Cusp prospect where we have already identified encouraging tungsten mineralisation in rock chip samples and RC drilling.

At the same time, recent BHP Xplor-backed research released by Litchfield Minerals has reframed the broader Harts Range as a district-scale Copper-Nickel-PGE mineral system, independently validating our long-held view of the region's prospectivity. Our strategic landholding across this emerging mineral province provides exposure to numerous high-priority exploration targets, and we are increasingly encouraged by the geological potential demonstrated across the project area".

FOLLOW UP OF HARTS RANGE PRIORITY GEOPHYSICAL TARGETS

The Harts Range Project hosts approximately 46 priority geophysical targets, defined by Southern Geoscience Consultants (SGC) through integrated interpretation of airborne magnetic and geophysical signatures - including discrete magnetic features, structural intersections and radiometric responses - considered prospective for the Project's primary commodity suite of heavy rare earth elements (HREE), niobium and tungsten. 1

To date, only 6 of these 46 targets have been drill-tested, through the New Frontier's maiden reverse-circulation (RC) scout programme completed in early 2026.2 With approximately 40 priority targets remaining untested, evaluation of the Project's target inventory is at an early stage, and New Frontier's geological field teams will return to site in July 2026 to systematically advance the pipeline. The untested 40 out of 46 represents substantial exploration potential.

HARTS RANGE EXPLORATION PROGRAMME

The July 2026 field programme is designed to build systematically on these early results through targeted mapping, rock-chip and soil sampling, and the prioritisation of targets for potential future drill-testing.

A key focus for the upcoming programme is the Kings Cross Prospect, located in the south of EL32513 (Figure 2). Recent airborne geophysical surveys identified a prominent local magnetic anomaly at Kings Cross (507884 mE, 7442739 mN; GDA94, MGA Zone 53), which preliminary review by Southern Geoscience Consultants interprets as a large, discrete magnetic feature approximately 150 to 200 m in diameter and extending to a similar depth.

The anomaly is spatially associated with a prominent east-west-trending fault mapped from 1:10,000 geophysical interpretation. Kings Cross remains an untested, high-priority target, and New Frontier's geological field team will return to site next month to further assess the prospect for polymetallic prospectivity 4.

GEOPHYSICAL OBSERVATIONS AND INTERPRETATION

New Frontier's upcoming field programme will include detailed geological mapping and surface sampling of the Kings Cross prospect, which has been identified as a compelling magnetic anomaly hosted within a calc-silicate package. A review of the geophysical data by Southern Geoscience Consultants has highlighted a complex, potentially remanently magnetised magnetic feature located to the east of the prospect as the primary exploration target. Several additional magnetic features to the west and southwest have also been identified as secondary targets.

The Company believes these magnetic anomalies should be readily identifiable in the field and that systematic geological mapping and geochemical sampling will be critical in determining the source of the anomalism and assessing its significance for mineralisation. Understanding the nature of the magnetic unit and any associated alteration systems will provide an important foundation for evaluating the prospect's mineral potential and may support the implementation of follow-up geophysical surveys, including electromagnetic (EM) methods. The target exhibits similarities to the nearby Jervois mineral field, where mineralisation is associated with complex magnetic signatures that include a component of magnetic remanence6.

BHP X-PLOR BACKED RESEARCH REFRAMES HARTS RANGE FOR DISTRICT-SCALE MINERAL POTENTIAL

Recent BHP Xplor-backed research released by Litchfield Minerals has highlighted the broader Harts Range region as a district-scale copper-nickel mineral system with significant discovery potential3. The research provides important regional validation of the mineral endowment of the belt that hosts New Frontier's Harts Range Project. The findings validate the prospectivity of New Frontier's largely untested tenure position and supports the assessment of several priority targets. This includes the Kings Cross magnetic anomaly, where upcoming field activities will focus on refining the geological model and evaluating its potential significance within the broader district-scale mineral system3.

NEXT STEPS

NFM's July 2026 field programme to include:

• Mobilisation of NFM geological field team to Harts Range in early July 2026, with a focus on mapping and surface sampling at the Kings Cross magnetic anomaly in the south of EL32513
• Continue to undertake systematic evaluation and exploration of the remaining 40 untested priority geophysical targets
• Mapping, sampling and assay results to be reported as they become available

REFERENCES

• New Frontier Minerals Limited, 2025. Geophysical interpretation identifies 46 HREE-Nb-U priority targets at Harts Range, NT. ASX Announcement, 31 March 2025.
• New Frontier Minerals Limited, 2026. Tungsten at Harts Range and Pomme REE Advances. ASX / LSE Announcement, 6 March 2026.
• Litchfield Minerals Limited (ASX: LMS), 2026. Harts Range: Defining a New Copper-Nickel Discovery District. ASX Announcement, 18 June 2026. Research relates to Litchfield's own tenure in the Harts Range region and is cited as regional geological context only; it does not constitute exploration results on New Frontier's tenements.
• New Frontier Minerals Limited. (2026). Quarterly report period ending 31 March 2026. New Frontier Minerals Limited.
• Southern Geoscience Consultants 2025, Harts Range - Structural Interpretation of Geophysical Data (1:10,000 Scale), Report SGC4562, prepared for New Frontier Minerals Ltd, April 2025.
• Whiting, T.H. (1986). Aeromagnetics as an aid to geological mapping - a case history from the Arunta Inlier, Northern Territory, Australia. Australian Journal of Earth Sciences, 33(2), 271-286.
• Maiden Mineral Resource Estimate 2.1Mt @ 1.1% Cu (21,886t) for Big One Deposit - ASX announcement,

28 February 2022. (Refer to Appendices 1-4).

This announcement was approved for release by the Board of New Frontier Minerals Ltd.

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