Key Highlights

  • Rimfire Pacific Mining Ltd (ASX:RIM) increases Murga resource to 56.1Mt @ 138ppm Sc.
  • Total contained scandium now 7,760t (11,900t Sc oxide).
  • Resource remains open laterally and at depth with further drilling planned.
  • Global inventory at Fifield expands to 16.2Kt Sc oxide.
  • Metallurgical test work and regulatory approvals underway for next phase.

Rimfire Pacific Mining Ltd (ASX:RIM) has reported a significant upgrade to the Mineral Resource Estimate (MRE) at its Murga Scandium deposit, increasing the resource by 300%. The updated estimate now stands at 56.1 million tonnes at 138 parts per million scandium, equivalent to 7,760 tonnes of contained scandium.

This increase represents a substantial step in building the company’s scandium resource base within the Fifield region of New South Wales, positioning it among notable players in the emerging scandium market.

Open Resource with Expansion Potential

The Murga deposit remains open both laterally and potentially at depth, indicating further potential for resource growth. The company has outlined a series of follow-up work programs aimed at expanding and upgrading the resource.

Planned exploration activities include drilling on a 100 by 100 metre spacing to test areas where the resource remains open, as well as infill drilling on a 50 by 50 metre grid to improve grade definition. These programs are designed to enhance geological confidence and potentially convert additional material into higher resource categories.

The investigation of anomalous scandium within underlying ultramafic basement rocks also introduces an additional exploration dimension.

Metallurgical Potential and Cost Considerations

A key aspect of the Murga project is the potential for low-iron scandium mineralisation, which may enable extraction using atmospheric leaching techniques. This method is generally considered less capital-intensive compared to alternative processing routes, potentially improving project economics.

Metallurgical test work is planned to assess scandium recoveries and validate the suitability of this approach. The outcome of these studies will be critical in determining the feasibility of commercial development.

Growing Regional Scandium Inventory

The Murga resource upgrade contributes to Rimfire’s broader scandium inventory at Fifield, which now totals approximately 10.6 thousand tonnes of scandium, or 16.2 thousand tonnes of scandium oxide.

This inventory includes contributions from other deposits such as Melrose and Currajong, as well as exploration upside from the Malamute Scandium Prospect located approximately 40 kilometres north of Murga.

The aggregation of multiple deposits within a single region supports the company’s strategy of building a globally significant scandium resource base.

Advancing Toward Next Phase of Exploration

Rimfire is currently seeking regulatory approvals to commence further drilling and metallurgical test work at Murga during the June 2026 quarter. These activities are expected to focus on both expanding the resource and improving its classification.

The integration of geological, metallurgical, and exploration data will be essential in advancing the project toward potential development.

About the Company

Rimfire Pacific Mining Ltd (ASX:RIM) is an Australian exploration company focused on critical minerals, including scandium, within the Fifield district of New South Wales. The company’s portfolio includes multiple scandium prospects and deposits, forming a regional exploration and development strategy.

Rimfire aims to establish a significant presence in the scandium market by building a large and scalable resource inventory.

Industry Trends and Market Context

Scandium is considered a critical mineral due to its applications in aerospace, solid oxide fuel cells, and aluminium alloys. Its use in lightweight, high-strength materials makes it relevant for industries focused on energy efficiency and advanced manufacturing.

However, the scandium market remains relatively small and underdeveloped compared to other critical minerals. Supply is limited, and demand growth depends on broader adoption of scandium-based technologies.

Projects that can deliver scalable, cost-effective production are likely to play a key role in shaping the future of the market.

Bullish Perspective: Resource Scale and Strategic Positioning

From a bullish perspective, the significant increase in the Murga resource enhances Rimfire’s position within the scandium sector. The growing inventory at Fifield provides scale, which is an important factor in attracting potential partners and investment.

The potential for low-cost processing through atmospheric leaching further supports the project’s economic prospects. The presence of multiple deposits within the region also offers opportunities for integrated development.

Bearish Perspective: Market Uncertainty and Early-Stage Development

On the other hand, the scandium market’s limited size and uncertain demand growth present challenges. The project remains at an early stage, with metallurgical and economic feasibility yet to be established.

The variability of grades and the complexity of the deposit may also impact development outcomes. Additionally, regulatory approvals and environmental considerations could influence timelines.

Investment Risks and Challenges

Investors should consider risks related to exploration and resource definition, including geological variability and the success of planned drilling programs. Metallurgical performance will be a key determinant of project viability.

Market risks include the relatively niche nature of the scandium market and uncertainty around future demand. Financial risks include funding requirements for ongoing exploration and development.

Regulatory and environmental approvals may also impact project progression.

Outlook: Expanding Resource Base and Advancing Studies

The Murga resource upgrade represents a significant milestone in Rimfire’s strategy to build a substantial scandium inventory. The focus now shifts to expanding the resource further, improving its classification, and advancing metallurgical studies.

If successful, these efforts could position the company to play a role in the development of the scandium market. However, the pathway to commercialisation will depend on continued technical progress and market conditions.