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MTM Critical Metals Limited (ASX:MTM) (MTM or the Company) has entered into a binding agreement to acquire 100% of Flash Metals Pty Ltd (Flash), the beneficial owner of three key exploration licenses prospective for niobium and rare earth elements (REE) in the West Arunta region of Western Australia.
Highlights:
- MTM to acquire 100% of Flash Metals Pty Ltd, the beneficial owner of 3 granted exploration licences in Western Australia’s West Arunta region, immediately adjacent to ground held by WA1 Resources (ASX:WA1) and Encounter Resources (ASX:ENR).
- Deal includes acquisition of the Mukinbudin Niobium-REE Project, comprising 2 granted exploration licences located 250km northeast of Perth in the South West Mineral Field of Western Australia.
- Flash also holds an option to exclusively negotiate the rights to Flash Joule Heating technology developed by Rice University in Houston, USA which has demonstrated the potential to treat REE mineralisation and more efficiently recover critical metals from critical metal-rich recycling and waste streams.
Covering ~140km2, the granted West Arunta Niobium-REE licences are located immediately adjacent to tenements held by WA1 Resources Limited (ASX:WA1, $484m mkt. cap.) and Encounter Resources Limited (ASX:ENR, $107m mkt. cap.), where niobium-REE mineralised carbonatites have recently been discovered:
The West Arunta region is one of Australia’s critical metal exploration hotspots with over $60m in exploration expenditure collectively invested in the district by a number of ASX companies including Rio Tinto Limited (JV with Tali Resources Pty Ltd) (ASX:RIO), CGN Resources Limited (ASX:CGR), and IGO Limited (ASX:IGO).
The Flash transaction also includes the acquisition of the Mukinbudin Niobium-REE Project, comprising two exploration licences located 250km northeast of Perth in the South West Mineral Field of Western Australia. The tenements that are included in the Flash transaction comprising the West Arunta Niobium REE Project (E/80/5858, E80/5874 and E80/5875) and the Mukinbudin Niobium-REE Project (E70/6048 and E70/6359) are together, the WA REE Tenements (Appendix I).
Flash also has an option (FJH Option) to exclusively negotiate the licencing rights to an early-stage processing technology for REE and precious metals known as Flash Joule Heating (FJH), which has been developed by researchers at Rice University in the USA (see Rice University article at https://news.rice.edu/news/2022/rare- earth-elements-await-waste).
MTM Managing Director, Mr Lachlan Reynolds said the Flash acquisition provides the Company with compelling exploration opportunities in line with its strategy to discover and develop critical metal projects.
“We are very excited to acquire such prospective ground in the West Arunta province, where there is an opportunity to discover new niobium-rare earth deposits in historically untested ground right next door to some emerging mineralised carbonatite projects identified by both WA1 Resources and Encounter Resources,” Mr Reynolds said.
“Additionally, Flash Joule Heating has shown promise during test work for metal recycling and for treatment of waste such as coal fly ash but we are very keen to see what applications it may have for treating rare earth mineralisation, where a breakthrough could unlock immense value from otherwise economically marginal deposits.”
Mr Reynolds said the immediate focus at West Arunta is to complete heritage agreements with the local Native Title holders and proceed with a first-pass exploration program.
West Arunta Niobium REE Project
Figure 1: The West Arunta Niobium-REE Project comprises three granted exploration licences in eastern central Western Australia, located within the Gibson Desert about 130km west of the Northern Territory/ Western Australia border in the East Kimberley Mineral Field.
Historical exploration in the West Arunta WA REE tenement areas is very limited. There has been no drilling on the ground, nor have any systematic geochemical sampling or geophysical surveys been completed. The West Arunta region has historically been explored for gold and copper with reconnaissance airborne geophysics and limited ground geophysical and geochemical surveys. The location of the West Arunta WA REE Tenements and their proximity to tenements held by WA1 and Encounter are shown in Figure 1.
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MTM:AU
Unconformity Uranium Drill Targets Identified from 2024 Geophysical Data
Key Highlights
- Final data received and interpretation completed for the ground electromagnetic geophysical surveys from the winter 2024 program at the Marshall and North Millennium projects.
- Several conductive anomalies identified at Marshall, located above and below the unconformity, consistent with regional exploration model.
- Stacked anomalies concurrently with multigenerational geophysical data provides a base to assess the exploration targets and refine drillhole targets.
- The projects are located 15 kilometres from the majority Cameco owned Millennium deposit, and just 40km from the world class McArthur River mine.
- Basin remains funded for the next round of field exploration.
The ground electromagnetic successfully identified 3 main targets which confirms the geological and exploration model. Of note is Target 1 (Figure 1), where modelled EM plates below the unconformity align with a sandstone ZTEM anomaly, which is interpreted to be alteration within sandstone. The identification of these targets is encouraging and consistent with regional trends in the southeastern Athabasca and provides increased confidence in drill hole targeting. Basin is currently reviewing options and priorities of how to progress exploration of these confirmed targets.
Basin’s Managing Director, Pete Moorhouse, commented:
“Conducting ground geophysical surveys on Marshall and North Millennium was a milestone in advancing these underexplored projects in Basin’s uranium portfolio. The form of these anomalies is highly encouraging given the proximity to some of the world’s largest uranium deposits.”
Key results
Following the encouraging conductive anomalism highlighted by the 2023 3D inversion of two historic airborne Electromagnetics (Z‐Tipper Axis) (“ZTEM”) datasets partially covering the current North Millennium and Marshall projects3,4, Basin contracted Discovery International Geophysics5 to carry out ground Stepwise Moving Loop Transient Electromagnetic (‘Ground EM’) surveys on areas of immediate interest within the Projects.
Figure 1 Three main anomalies shown from 2024 ground EM, in plan view (top diagrams) and cross- section looking northeast (bottom diagram). The ground EM anomalies are displayed with the modelled plates against the historical ZTEM data.
The 2024 Ground EM survey data returned six conductive anomaly picks producing three main target areas (Figure 1). The anomalies correlate strongly with the southern edge of the circular ZTEM conductive anomaly at Marshall and the interpreted northern edge of the circular anomaly identified in the historic data. A weaker EM pick was also interpreted centred between the two prominent ZTEM conductivity anomalies.
Three-dimensional modelling using Maxwell produced six electromagnetic conductive plates within the basement stratigraphy, all below the unconformity (Figure 1). The two southeastern plates are clearly aligning with a conductive sandstone ZTEM anomaly identified from the historic data, which is above the interpreted unconformity. This is interpreted as potential basal sandstone alteration proximal to the EM anomalies and constitutes a high-priority drill target area, refer figure 2.
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Airborne EM over Multiple Targets on Ti-Tree Project
- Augustus Minerals has contracted UTS Geophysics to conduct a VTEM Max survey over several Copper, Cu-Ni-PGE, Zn-Pb-Ag and Uranium targets along the money Intrusion and within proximity of the prospective 85k long Ti-Tree Shear.
- The surveys will cover:
- The Money Intrusion, prospective for Cu-Ni-PGE mineralisation.
- Copper Ridge and Nics Bore over anomalous Copper Drilling results
- The Coo Creek prospect where drilling by Augustus in 2023 identified strongly anomalous Zn-Pb-Ag mineralisation.
- The Munaballya Well North area which shows potential for economic Uranium mineralisation.
- The surveys will help to advance the untapped potential of the Ti-Tree project to host economic mineralisation of multiple commodities.
Andrew Ford, GM Exploration
“The VTEM survey will provide key targeting data over three highly prospective and different prospects with potential for multiple commodities. Whilst the high prospectivity for copper mineralisation has been well documented, the addition of uranium and Broken Hill base metal style mineralisation highlights the quality of the underexplored Ti-Tree project”.
VTEM
UTS Geophysics has been engaged to conduct a helicopter borne VTEM Max survey comprising 646-line km over three separate survey areas. The system is excellent for locating discrete conductive anomalies as well as mapping lateral and vertical variations in resistivity which helps map structure, alteration and rock type. The system also collects magnetic data through a caesium magnetometer. The transmitter/receiver loop is suspended on a cable approximately 40m below the helicopter (Figure 1).
Figure 1 VTEM Max helicopter deployed electromagnetic survey arrangement.
Figure 2 Prospects and VTEM Survey areas.
Money Intrusion
The Money Intrusion, which has proven potential to host Ni-Cu-Co-PGE (platinum group elements), is part of the regional Mundine Well Dolerite Suite, a regionally extensive dolerite (strike length >80km). This extensive mafic intrusion, which is comprised of a variety of lithologies, including gabbro in the core, olivine dolerite on the chilled lower contact or keel and fine-grained dolerite on the outer edges. Mapping, aeromagnetics and multi-spectral imagery show that the Money Intrusion within the Ti-Tree Project covers a strike length greater than 16km, reaching widths >600m in the north of E09/23241.
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