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Impact Minerals Limited (ASX:IPT) is pleased to announce that it has identified 20 moderate to strong conductors in airborne electromagnetic (AEM) data flown over parts of its 100% owned Arkun Project in the emerging mineral province of southwest Western Australia, a Tier One jurisdiction (Figure 1).
- Twenty moderate to strong electromagnetic (EM) conductors identified at the Arkun Battery Metals project in 400 m line-spaced airborne electromagnetic (“AEM”) survey data collected by the XCalibur HELITEM time-domain system.
- Several priority anomalies coincide with magnetic and gravity anomalies and Ni Cu PGM-in-soil anomalies.
- Many other anomalies have yet to be soil sampled, and this work is a priority for the next Quarter with a view to a maiden drill programme in Q1 2024.
- Broken Hill update: Xplor programme completed. IGO withdraws from joint venture over the alkaline intrusions. Data synthesis and interpretation in progress of all data collected during Xplor and by IGO. Both BHP and IGO remain interested in the broader Broken Hill project.
Impact Minerals’ Managing Director, Dr. Mike Jones, said, “These new conductors at Arkun look very promising and significantly increase the potential for the discovery of massive nickel-copper-PGM sulphides. What’s particularly exciting is that some conductors have coincident soil geochemistry anomalies. However, with many of them still yet to be soil sampled, we are confident of generating more targets for follow-up work, which will include drilling. With the recent REE soil anomalies identified throughout the project area, including the standout Horseshoe prospect, Arkun continues to emerge as a major project for a wide range of essential battery and strategic minerals.”
The airborne EM survey was completed over seven priority areas, covering only about 15% of the Arkun project, by XCalibur Multiphysics using the HELITEM system at a line spacing of 400 metres (Figure 2).
The 20 conductors were identified using a combination of interpretation of individual lines of EM data by consultants Resource Potentials and by reprocessing of the survey data by Intrepid Geophysics using their proprietary 2.5D AEM inversion algorithm. The 2.5D inversion process provides conductivity models and can image steeply dipping, deep, and near-surface targets.
Figure 1. Image of regional magnetic data showing the location of the Arkun project along trend from the Julimar/Gonneville Ni-Cu-PGE deposit owned by Chalice Mining Limited (ASX: CHN).
Also shown is ground held by private company Northam Mining Ltd, in which Chalice Mining is now earning an interest via a joint venture, and ground held by Anglo American Corporation, which surrounds the Arkun Project on three sides. The green lines are publicly available regional AEM flight lines flown in 2020, including one line over the Gonneville deposit (Figure 7).
Two of the survey areas contain numerous EM conductors that have broadly coincident strong nickel- copper-PGM soil geochemistry anomalies: these include 5 AEM anomalies at the Three Eagles prospect and 6 AEM anomalies at the Starfish complex (Figures 2 and 3; and ASX Release 9 August 2023).
In addition, the EM conductors are commonly coincident either with magnetically quiet areas and/or gravity- highs in regional geophysical data, which together may represent mafic and ultramafic intrusions that are potential hosts for nickel-copper-PGM mineralisation (Figures 2 and 3).
Figure 2. Image of regional magnetic data showing the location of the 7 AEM survey areas showing priority conductors (white squares). Three survey lines (AEM-1, AEM-2 and AEM-3) are shown in detail in Figures 4, 5 and 6.
Figure 3. Image of regional gravity data showing the location of the 7 AEM survey areas showingpriority conductors (white squares). Note the Starfish Complex is associated with a strong gravity anomaly. Three survey lines (AEM-1, AEM-2 and AEM-3) are detailed in Figures 4, 5 and 6.
THREE PRIORITY CONDUCTORS
Three prominent conductors that are priority areas for follow-up work have been identified in the 2.5D inversions and are shown here as examples.
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This article includes content from Impact Minerals, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
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Impact Minerals Limited
Investor Insight
With a mining lease application underway and a scoping study that shows excellent economics, Impact Minerals’ game-changing, advanced Lake Hope high-purity alumina project makes for a compelling investment case.
Overview
Impact Minerals (ASX:IPT) is an exploration and development mining company focused on discovering and developing new resource projects within Australia. Lake Hope, a transformational acquisition by the company and its current flagship asset, is a high-purity alumina (HPA) project in Impact’s home territory of Western Australia, a tier-one jurisdiction.
This advanced-stage project allows the company to fast-track the asset toward development, firmly establishing the company on the road to production and increasing shareholder value.
HPA is a high-value product with various uses in several industries that are key to the transition to a low-carbon world. It is mainly used in LED lighting, micro-LED screens, and ceramic-coated separators in lithium-ion batteries. Both these markets are forecast to grow dramatically over the next decade, and a looming supply shortage is predicted for 2026.
HPA is also necessary for producing synthetic sapphire and scratch-resistant glass. With these ever-widening applications for HPA, demand for this resource is expected to grow from US$3.18 billion to US$12.21 billion by 2030 with a compounded annual growth rate of about 20 percent.
Lake Hope is the company’s current focus as it moves towards production, and where a very shallow, high-grade resource of HPA precursor material has been identified in the top two meters of a dry salt lake. The deposit has unique physical and chemical properties that will allow for inexpensive digging and mining, with transportation to a processing facility off-site in an established industrial area. This will accelerate the approvals processes required to get into production.
With a mining lease application pending, Impact aims to bring Lake Hope, which contains almost 1 million tons of potential HPA, into production when the forecast average price for 4N HPA (99.99 percent Al2O3) and related products is about US$20,000 per ton. The ‘4N’ designation indicates the purity grade, making it suitable for high-tech end uses.
Outstanding economics from the latest scoping study released by the company shows Lake Hope’s potential to be the lowest-cost producer of HPA globally by up to 50 percent.
Lake Hope has a maiden mineral resource estimate (MRE) of 3.5 million tons at 25.1 percent alumina (Al2O3) for a contained 880,000 tons of alumina. The company also received heritage clearances for the entire Lake Hope deposit further de-risking the project and providing another critical component in the company’s application for a mining lease.
Impact completed a bulk sampling and test pits program at the Lake Hope project in December 2023, and later reached a key milestone by producing HPA greater than 99.99 percent (4N) purity from the metallurgical processing of lake clays acquired from Lake Hope.
In February 2024, a new proprietary metallurgical process for producing HPA from the lake clays was identified. Impact produced 99.99 percent (4N) Al2O3 from a low-temperature leach (LTL) process. The LTL process may lower the capital and operating costs to produce HPA compared to the sulphate process which underpinned the recent scoping study. The LTL process will be included in the ongoing pre-feasibility study in parallel with the sulphate process at marginal extra cost to determine the best processing route to HPA. The PFS is due to be completed in late 2024.
A comparison of the LTL process and the sulphate process
The company is well funded to finance the pre-feasibility study at the Lake Hope High Purity Alumina project and exploration activities at the Arkun battery minerals project.
Impact Minerals has been awarded a $2.87 million grant for the commercialisation of its innovative process to produce High Purity Alumina (HPA) from the Lake Hope deposit. The grant is under the Federal Government’s Cooperative Research Centres Projects (CRC-P) program which fosters short-term, industry-led research collaborations. The grant is part of an estimated $6.4 million research and development project to be completed within three years and designed to provide Impact with the relevant information required to complete a definitive feasibility. A key component of the grant funding will be to construct a pilot plant, which is a key goal for 2025, and this will provide consistent material for off-take and qualification trials.
Impact Minerals was also one of the inaugural cohort of seven companies selected to be part of the prestigious BHP Xplor program. BHP Xplor, an accelerator program introduced by BHP in August 2022, is designed to help provide participants with the opportunity to accelerate their growth and the potential to establish a long-term partnership with BHP and its global network of partners.
The BHP Xplor funding was used to identify new target areas for copper and other energy metals around the Broken Hill area in New South Wales, eastern Australia, where Impact has been quietly adding to its ground position for several years.
Additionally, the company is exploring its large Arkun battery metals project, also in Western Australia which covers nearly 2,900 square kilometres. Three new exploration licence applications were submitted recently immediately north of the Arkun project along trend from the recently discovered REE soil geochemistry anomalies at Hyperion, Swordfish and Horseshoe, and the Caligula copper anomaly. These anomalies require drill testing which will occur in 2024 and is an exciting development in the emerging mineral province of southwest WA.
A strong management team with over 50 years of combined industry experience leads the company. With a mining and exploration geology degree, Dr. Mike Jones, managing director, launched a long career consulting and leading mining organizations. Peter Unsworth, the non-executive chairman, has more than 35 years of experience in multiple financial sectors, such as securities industries and wealth management. Paul Ingram, a non-executive director, has led several mining companies since 2003. Impact Minerals has the experience and expertise to lead the company to success.
Company Highlights
- Impact Minerals is an exploration and development mining company focused on rapidly moving its flagship Lake Hope high-purity alumina (HPA) project toward production.
- The Lake Hope project has a high-grade maiden mineral resource estimate (MRE) of 3.5 million tonnes at 25.1 percent alumina (Al2O3), for a contained 880,000 tonnes of alumina that can be converted to HPA.
- HPA is used throughout multiple industries, and the overall HPA market is projected to grow by a CAGR of 18.4 percent by 2030.
- A pre-feasibility study is currently in progress and scheduled to be completed by Q4 2024. A mining lease application for the Lake Hope High Purity Alumina (HPA) was recently lodged with the aim of being granted by 2026.
- The company’s project portfolio also includes assets with high-grade mineral deposits of a range of base, critical and precious metals.
- Impact Mineral’s 2,000-square-mile Arkun nickel-copper-PGE project in Western Australia has produced encouraging assays that motivate further exploration. Maiden drill programmes are planned for early 2025.
- The company is also exploring its Broken Hill copper project in New South Wales following a major grant under the auspices of the BHP Xplor program in 2023..
- A strong management team leads the company with experience in geology, mining and corporate finance.
Key Projects
Lake Hope HPA Project
Impact Minerals’ Lake Hope HPA project is in Western Australia, a tier-one mining jurisdiction. HPA is a crucial component in many new and emerging technologies, creating ongoing demand for high-grade sources. The Lake Hope project is the company’s flagship as it moves toward production.
Project Highlights:
- Maiden Mineral Resource Estimate: A maiden mineral resource of 3.5 million tonnes at 25.1 percent alumina (Al2O3) for a contained 880,000 tonnes of alumina has been defined at the Lake Hope HPA Project. About 88 percent of the resource, or 775,000 tonnes of alumina, is in the higher confidence indicated resource category.
- Amenable to Open-pit Mining: The Lake Hope project is a unique HPA asset amenable to shallow, open-pit mining. The deposit is soft and shallow, allowing for cheap digging and minimal infrastructure requirements. This type of deposit also lowers the environmental footprint of the operation.
- Fast-tracked to Production: A mining lease application is currently underway. Once granted, the company will begin working towards a pre-feasibility study and mini pilot plant. Impact Minerals plans to reach a complete pilot plant by 2026.
- Impressive Results of the 2023 Scoping Study: Outstanding economics show Lake Hope to potentially be the lowest-cost producer of High Purity Alumina (HPA) globally by up to 50 percent. Key outcomes from the scoping study include:
- Annual production of 10,000 tpa of 4N HPA with an initial 25-year mine life
- Annual EBITDA of A$174 million.
- 2 years construction period with 5,000 tonnes of production during the first year, 8,000 tonnes in the second year and 10,000 tonnes of production thereafter.
- US$934 million post-tax NPV8 at an IRR of 55 percent.
- Mining Lease Application: Amining lease application was lodged in mid-2024 over the West Lake resource while a miscellaneous licence application (L63/99) was lodged to cover mine infrastructure and haulage road.
The scoping study was underpinned by a sulphuric acid process allowing the company to achieve a new milestone by producing HPA with purity of more than than 99.99 percent (4N) from the metallurgical processing of lake clays acquired from Lake Hope. The company further identified a new proprietary metallurgical process for producing HPA from the lake clays. Known as the low-temperature leach (LTL) process, this also produced 99.99 percent (4N) Al2O3 and has the potential to lower even further the capital and operating costs to produce HPA compared to the sulphate process. The LTL process will be included in the ongoing pre-feasibility study along with the sulphate process to determine the best processing route to HPA. The PFS is due to be completed in late 2024.
Broken Hill Copper Project
The Broken Hill project has a significant land position of 815 square kilometers and hosts multiple targets with the potential for high-grade copper. Broken Hill is located in New South Wales, Australia, an area known for its prolific silver-lead-zinc mining operations and the giant Broken Hill deposit.
Project Highlights:
- Participant in the BHP Xplor Program: Impact was selected for the BHP Xplor program in 2023 based on its Broken Hill project. The program is designed to allow participants to accelerate growth and establish a long-term partnership with BHP.
- Potential for Additional Minerals and Deposits: As well as copper, the project has significant exploration potential for magmatic nickel-copper-PGE sulphides, and at the time the host rocks were formed, Broken Hill was located close to the world-class nickel-copper-PGE deposit of Jinchuan and the significant Lengquisheng deposit. The project area also has the potential to contain zinc-lead-silver deposits, providing even more value.
Arkun Nickel-Copper-Gold-Lithium-REE Project
The Arkun project is a 2,900-square-kilometer nickel, copper and gold project located in the emerging Ni-Cu-PGE province near the world-class Julimar Ni-Cu-PGE deposit and surrounded by Anglo American Corporation, which secured its ground holding shortly after Impact secured its asset. Anglo-American is one of the world’s top ten mining companies, and their presence in the region brings confidence in the project’s potential.
Project Highlights:
- Additional Exploration Underway: Impact plans follow-up work programs, including drilling, at its priority targets.
- Significant Targets Identified: Recent soil sampling identified two new prospects:
- Hyperion prospect - Located in the northwestern part of the project area returned with rare earth element anomalism of up to 5,880 ppm (0.59 percent) total rare earth oxide (TREO+Y) and neodymium and praseodymium (Nd+Pr) of up to 21 percent.
- Caligula prospect - Initially identified on the roadside, the Caligula prospect is a large and significant target for porphyry copper mineralisation.
- Three New Exploration Licences: Impact applied for three new exploration licences expanding Arkun project along trend from the recently discovered REE soil geochemistry anomalies at Hyperion, Swordfish and Horseshoe as well as the Caligula copper anomaly.
Management Team
Peter Unsworth - Non-executive Chairman
Peter Unsworth, formerly a chartered accountant, has over 35 years of experience in the corporate finance, investment and securities industries and a wealth of management experience with public and private companies. A former executive director with a leading Western Australian stockbroking company, Unsworth has been a director of several public exploration and mining companies. He recently completed a long time serving as chairman of the Western Australian Government-owned Gold Corporation (operator of The Perth Mint). Unsworth is the founding chairman of Impact Minerals.
Dr. Mike Jones - Managing Director
Dr. Mike Jones is the founding managing director of Impact Minerals Limited, which was listed on the Australian Stock Exchange in November 2006. Reporting to the board of directors, he is responsible for the company's performance as it moves towards production at its Lake Hope High Purity Alumina Project and also for implementing strategies to explore and maximize the value of the company's other extensive tenement holdings.
Since listing, he has helped raise more than $60 million to help fund the exploration of Impact’s projects and managed the company through significant adverse events, including the global financial crisis and the Fukushima nuclear disaster, which affected Impact’s considerable investment in the uranium sector, a five-year global downturn in the mining sector and more recently, the COVID-19 pandemic.
Paul Ingram - Non-executive Director
Paul Ingram is a geologist with extensive experience managing major mineral exploration programs for several publicly listed companies and has been involved in the mining sector for over thirty years. He has designed and implemented innovative techniques for exploration in remote areas and has managed projects in countries throughout Australia and East Asia. Ingram has been a director of the following listed companies in the past three years: Polo Resources from January 2008 to January 2011; A-Cap Resources since June 2009; Consolidated Global Investments since September 2006; Caledon Resources from February 2003 to March 2008; and Australian Pacific Coal since March 2011.
Dr Frank Bierlein - Non-executive Director
Dr. Frank Bierlein is a geologist with 30 years of experience as a consultant, researcher, lecturer and industry professional. Bierlein has held exploration and generative geology management positions with QMSD Mining, Qatar Mining, Afmeco Australia and Areva NC, and consulted for, among others, Newmont Gold, Resolute Mining, Goldfields International, Freeport McMoRan, and the International Atomic Energy Agency. He is currently a non-executive director of PNX Metals. He was previously a non-executive director of Gold Australia NL and chaired the advisory board of a Luxembourg-based private equity fund between 2014 and 2021.
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