New Frontier Minerals Limited / Index: ASX & LSE / Epic: NFM / Sector: Industrial Metals and Mining

5 August 2026

New Frontier Minerals Limited

("NFM" or the "Company")

Geophysical Modelling Identifies Untested Bedrock Conductor at Harts Range

New Frontier Minerals Ltd (LSE and ASX: NFM) is pleased to advise that independent modelling by Southern Geoscience Consultants ("SGC") has defined a bedrock conductor within the 100% owned EL 34147, which is part of the Company's Harts Range Heavy Rare Earths, Niobium and Tungsten Project ("Harts Range" or the "Project") in the Northern Territory.¹

The conductor was modelled from publicly available Geoscience Australia AusAEM airborne electromagnetic ("AEM") data as a single, flat-lying plate approximately 240m below surface. It is located 3.5km south of the Kings Cross magnetic anomaly (Figure 2), within the belt that BHP Xplor-backed research reframed in June 2026 as a district-scale copper-nickel mineral system and remains untested.

HIGHLIGHTS

·    Southern Geoscience Consultants has independently modelled a bedrock conductor, approximately 240m below surface within NFM's 100%-owned Harts Range tenement EL34147¹

·    The newly identified conductor is located approximately 3.5km from the Kings Cross target, where NFM has received government approval to commence drilling of a discrete magnetic anomaly interpreted at a similar depth⁴

·    Southern Geoscience concluded the modelled conductor is prospective for copper-nickel mineralisation, identifying a compelling new high-priority exploration target within the project area¹

·    The modelled conductor is located within 40km of the C2 conductor identified through BHP Xplor-backed research by Litchfield Minerals Ltd (ASX: LMS), which has redefined the Harts Range region as an emerging district-scale nickel-copper-PGE province¹, ³

·    The target remains untested, with no ground electromagnetic surveys or drilling completed over the conductor to date and warrants further follow up¹

·    The target was generated from Geoscience Australia's publicly available pre-competitive AusAEM dataset, with no data acquisition costs ¹, ²

Chairman Gerrard Hall commented: "The Southern Geoscience AusAEM assessment provides further independent support for the emerging exploration potential of our Harts Range Project. The identification of a bedrock conductor at depth, interpreted from airborne electromagnetic modelling, is particularly encouraging given its proximity to the recently announced BHP Xplor-backed Litchfield Minerals C2 conductor. While this is an early-stage geophysical target, the results reinforce our view that Harts Range has the potential to host a much broader mineral system than previously recognised. Importantly, the study demonstrates that airborne electromagnetic data can successfully identify concealed bedrock conductors within the belt, providing New Frontier with an effective tool to prioritise future exploration."

THE MODELLED CONDUCTOR - A BEDROCK SOURCE AT DEPTH

Southern Geoscience Consultants completed an assessment of Geoscience Australia's publicly available AusAEM dataset across the Harts Range Project to identify potential bedrock conductors prospective for copper-nickel mineralisation. The assessment involved extracting the airborne electromagnetic survey line covering the project area, including a 5km buffer surrounding the tenement, reviewing the electromagnetic response for conductive anomalies, and undertaking two-dimensional (2D) plate modelling of the most significant anomaly (Figure 2). The modelling identified a concealed bedrock conductor at an interpreted depth of approximately 240 metres below surface and strikes 679 meters in a north-northwest direction, representing a high-priority exploration target for follow-up ground geophysical surveys and drilling.

The newly identified conductor further supports the emerging district-scale potential of the Harts Range belt. This is consistent with the BHP Xplor-backed research released by Litchfield Minerals Limited (ASX: LMS) in June 2026, which concluded that the region contains the key geological ingredients required to host large copper-nickel sulphide systems, including deep mantle-derived structures, repeated magmatic events and established copper and nickel sulphide mineralisation along major crustal-scale pathways.³

HARTS RANGE - A DISTRICT BEING REDEFINED

Litchfield Minerals Limited (ASX: LMS) reported the results of the BHP Xplor-backed research in full in June 2026. Its centrepiece was C2 - a strong deep conductor interpreted at approximately 10km depth directly beneath the Blackadder-Baldrick Ni-Cu-PGE prospects, which Litchfield describe as a direct link between deep conductive architecture and known sulphide mineralisation. Just as significant was the conclusion that conductors of that style are not resolved in coarser regional datasets, so further conductors may remain undetected across the belt, including in ground that has already been explored.³  SGC places NFM's modelled conductor (on 100% NFM tenure, EL 34147) within 40km of the C2 conductor identified through BHP Xplor-backed research by Litchfield Minerals. The Litchfield Minerals work provides encouragement for copper and nickel related deposits to be found throughout the belt.¹

 NEXT STEPS

NFM's forthcoming Harts Range work programme is to include:

·    Review of NFM's existing magnetic, radiometric and geological datasets across southern EL 34147 for coincident structure, lithology and magnetic response

·    Reconnaissance mapping and rock chip sampling along the projected surface position of the conductor

Progress the Mining Lease Application (ML 100479) and regulatory requirements over the Big One Deposit

·    Receipt and reporting of Mt Storm assay results, with follow-up surface sampling to evaluate its potential as a satellite target to the Big One Deposit

·    Review geological targeting and technical evaluation at the Big One Deposit to assess opportunities to extend known mineralisation and support future resource growth

·    Continue collaboration with Austral Resources on the proposed toll treatment pathway and other exploration-stage workstreams

REFERENCES

¹ Southern Geoscience Consultants, 2026. SGC4781 - Harts Range AusAEM Assessment (V2). Unpublished report prepared for New Frontier Minerals Limited, July 2026.

² Geoscience Australia. AusAEM airborne electromagnetic survey data, Line 1170001, Publicly available via the Geoscience Australia Exploration for the Future programme.

³ Litchfield Minerals Limited (ASX: LMS), 2026. "Harts Range: Defining a New Copper-Nickel Discovery District". ASX Announcement, 18 June 2026.

⁴ New Frontier Minerals Limited, ASX announcement: "Drilling Campaign Approved at Harts Range Project", 10 November 2025.

⁵ Mithril Resources Limited, 2009. Drilling Update Huckitta Project. ASX Release, 7 October 2009 (as reported by Litchfield Minerals Limited, 18 June 2026).

**ENDS**

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

For further information please contact:

About New Frontier Minerals

New Frontier Minerals Limited is an Australian-based focused explorer, exploring for the critical minerals and base metals required to power a more electrified and sustainable future. New Frontier holds a strategic portfolio of rare earth, niobium and copper assets in Australia and Canada, which includes the Harts Range Heavy Rare Earths and Niobium Project in the Northern Territory, the NWQ Copper Project in Queensland. Other interests include the Pomme REE Project, situated in Quebec, Canada. These commodities are expected to play an increasingly important role in supporting global decarbonisation, energy security and technological advancement.

Competent Persons Statement

The scientific and technical information in this announcement, which relates to exploration results, the modelling and interpretation of airborne electromagnetic data and the geology of the areas described, is based on information compiled and approved for release by Mark Biggs. Mark Biggs is a Member of The Australasian Institute of Mining and Metallurgy (AusIMM Member # 107188) and meets the requirements of a Competent Person as defined by the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code 2012 Edition).

Mark Biggs has 35 years of experience relevant to Rare Earth Elements (REE), industrial mineral copper mineralisation types, as well as expertise in the quality and potential mining methods of the deposits under consideration. Additionally, he has 25 years of experience in the estimation, assessment, and evaluation of exploration results and mineral resource estimates, which are the activities for which he accepts responsibility. He also successfully completed an AusIMM Online Course Certificate in 2012 JORC Code Reporting. Mark Biggs is a consultant with ROM Resources and was engaged by New Frontier Minerals Limited to prepare the documentation for several prospects, specifically those within the Northwest Queensland, Harts Range and Pomme Projects upon which the Report is based.

Furthermore, the full nature of the relationship between himself and New Frontier Minerals Limited has been disclosed, including any potential conflicts of interest. Mark Biggs is a director of ROM Resources, a company that is a shareholder of New Frontier Minerals Limited, and ROM Resources provides occasional geological consultancy services to New Frontier Minerals Limited. The Report or excerpts referenced in this statement have been reviewed, ensuring that they are based on and accurately reflect, in both form and context, the supporting documentation relating to exploration results and any mineral resource estimates. The release of the Report and this statement has been consented to by the Directors of New Frontier Minerals Limited. Mr Biggs consents to the inclusion in this announcement of the matters based on his information and supporting documents in the form and context in which it appears.

Forward Looking Statements

Certain information in this document refers to the intentions of New Frontier Minerals Ltd, but these are not intended to be forecasts, forward-looking statements, or statements about future matters for the purposes of the Corporations Act or any other applicable law. The occurrence of events in the future is subject to risks, uncertainties and other factors that may cause New Frontier Minerals Limited's actual results, performance, or achievements to differ from those referred to in this announcement. Accordingly, New Frontier Minerals Ltd, its directors, officers, employees, and agents, do not give any assurance or guarantee that the occurrence of the events referred to in this announcement will occur as contemplated. The interpretations and conclusions reached in this announcement are based on current geological theory and the best evidence available to the authors at the time of writing. It is the nature of all scientific conclusions that they are founded on an assessment of probabilities and, however high these probabilities might be, they make no claim for complete certainty. Any economic decisions that might be taken based on interpretations or conclusions contained in this announcement will therefore carry an element of risk. The announcement may contain forward-looking statements that involve several risks and uncertainties. These risks include but are not limited to, economic conditions, stock market fluctuations, commodity demand and price movements, access to infrastructure, timing of approvals, regulatory risks, operational risks, reliance on key personnel, Ore Reserve and Mineral Resource estimates, native title, foreign currency fluctuations, exploration risks, mining development, construction, and commissioning risk. These forward-looking statements are expressed in good faith and believed to have a reasonable basis. These statements reflect current expectations, intentions or strategies regarding the future and assumptions based on currently available information. Should one or more of the risks or uncertainties materialise, or should underlying assumptions prove incorrect, actual results may vary from the expectations, intentions and strategies described in this announcement. No obligation is assumed to update forward-looking statements if these beliefs, opinions, and estimates should change or to reflect other future developments.

New Frontier Minerals Ltd confirms that it is not aware of any new information or data that materially affects the information included in this market announcement and that all material assumptions and technical parameters underpinning the estimates in this market announcement continue to apply and have not materially changed.

To view the JORC Code, 2012 Edition - Table 1 click here:http://www.rns-pdf.londonstockexchange.com/rns/2559P_1-2026-8-4.pdf