The Conversation (0)
A new proprietary metallurgical process has been identified for producing high-value High Purity Alumina (HPA) from the lake clays at Impact Minerals Limited’s (ASX:IPT) Lake Hope project, located 500 km east of Perth in Western Australia (Figure 1). Impact can earn an 80% interest in Playa One Pty Limited, which owns the Lake Hope project, by completing a Pre-Feasibility Study (PFS) on the project which is in progress (ASX Release March 21st 2023 and November 9th 2023).
- 99.99% (4N) Al2O3 produced from a new low-temperature leach (LTL) and acid digestion process called the “LTL Process”:
- The LTL Process is a simpler process that may lower the Capital and Operating Costs to produce HPA compared to the Sulphate Process, which has been the focus of test work to date.
- The Sulphate Process underpinned the recent Scoping Study, which indicated an operating cost of
- The LTL Process will now 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 on schedule in late 2024.
Impact Minerals’ Managing Director, Dr Mike Jones, said, “Today we reveal a further exciting breakthrough for producing HPA from the unique mix of minerals that are present at Lake Hope, minerals which have allowed our new LTL Process to produce the benchmark 99.99% pure HPA very quickly after starting the test work.
The LTL Process is simpler than the Sulphate Process that underpinned our recent Scoping Study and showed that at less than US$4,000 per tonne, Lake Hope may produce HPA at up to 50% cheaper than our peers.
We think that further work on the LTL Process could result in even lower operating and capital costs, and this would only further enhance the already impressive economics of the project, which has an NPV8 of well over A$1 billion.
We have now started further optimization studies for the LTL Process and will push forward with our Pre- Feasibility Study using both process routes for the time being to determine the best strategic choice for processing at the project. Given we can run all these tests in parallel for little extra cost, we are still on course to finish the PFS later this year and continue to look forward towards producing HPA from Lake Hope”.
Figure 1. Location of the Lake Hope Project.
The new process, called the LTL Process, has produced High Purity Alumina (HPA) at 99.99% purity from the raw lake clay in only a few months of laboratory test work (with its attendant delays for holidays and other customer work) (Table 1). This is one of the fastest times to produce HPA from raw materials reported by ASX-listed companies and attests to the relatively straightforward nature of the process. It involves different reagents to those used in the Playa One Sulphate Process, which has also recently successfully produced 4N HPA (ASX Release 19th February 2024).
Table 1. Assays results for Lake Hope HPA via the LTL Process. Repeat samples derived from sample LHMET001 (see Table below for sample location). Assays units are parts per million (ppm).Note that the LTL Process has not been optimized and further reductions in contaminants are anticipated.
The LTL Process is a direct low-temperature leach (<90o C) that removes the requirement for sulphuric acid roasting, which was a key part of the Sulphate Process and reduces the number of steps to produce HPA from five stages to four (Figure 2). Accordingly, the new process could offer further reductions in operating costs and capital costs to produce HPA compared to the Playa One Sulphate Process.
The recently released Scoping Study on Lake Hope, which was based on the Sulphate Process, showed that at an operating cost of less than US$4,000 per tonne, Lake Hope could be the lowest-cost producer of HPA globally by a significant margin of up to 50% over Impact’s peers (ASX Release November 9th 2023). Therefore, this margin could be increased should test work on the new process support these initial results and further demonstrate the potential world-class economics of the Lake Hope project.
Click here for the full ASX Release
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.
IPT:AU
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.
Get access to more exclusive Copper Investing Stock profiles here
Developing the lowest-cost HPA project in Australia
Top 5 Canadian Mining Stocks This Week: Guardian Exploration Gains 94 Percent
The projects include the Phase 2 expansion of LNG Canada’s Kitimat facility, which will double capacity of liquified natural gas to 28 million metric tons per annum, the development of Foran Mining's (TSX:FOM) McIlvenna Bay copper-zinc mine in Saskatchewan, and an expansion of Newmont (TSX:NGT,NYSE:NEM,ASX:NEM) and Imperial Metals' (TSX:III) Red Chris copper-gold mine in Northern British Columbia.
Carney also stated that a second set of projects would be announced before the CFL’s Grey Cup on November 16.
In major M&A news, mining giants Teck (TSX:TECK.B,TSX:TECK.A,NYSE:TECK) and Anglo American (LSE:AAL,OTCQX:AAUKF) announced on Monday (September 8) that they would combine in a US$70 billion “merger of equals.” If approved, the resulting company will be called Anglo Teck, and will be headquartered in Vancouver, British Columbia.
In a news release, Teck said the deal would create US$800 million in pre-tax recurring annual synergies by year four, with US$1.4 billion in pre-tax yearly earnings from optimizations at the adjacent Collahuasi and Quebrada Blanca copper mines in Chile.
Barrick Mining (TSX:ABX,NYSE:B) announced on Wednesday (September 10) that it had reached an agreement to sell its Hemlo Gold Mine in Ontario to Carcetti Capital, which will be renamed Hemlo Mining, for gross proceeds of US$1.09 billion through a combination of cash and shares.
The sale marks Barrick's continued divestment of non-core assets following the sale of its Donlin and Alturas projects earlier in the year.
Also, this week saw the TSX release its annual TSX30 top companies list, which included 17 resource companies, 15 of which are precious-metals-focused. The top three precious metals stocks were Lundin Gold (TSX:LUG,OTCQX:LUGDF), Avino Silver & Gold (TSX:ASM) and New Gold (TSX:NGD,NYSE:NGD). The top overall company was Celestica (TSX:CLS), which focuses on AI supply chain optimizations.
In other TSX news, Newmont applied to delist its shares from the exchange on Wednesday citing low trading volumes. The company has been looking to cut overhead in recent years, and the move could lower administrative costs and improve efficiency, Reuters reports.
South of the border, the US Bureau of Labor Statistics released its consumer price index data on Thursday, which showed inflation had ticked up to 2.9 percent over the same period last year. The numbers, along with last week’s weak jobs report, will be factors for the Federal Reserve when it meets for its September meeting next week.
As of Friday afternoon, over 95 percent of analysts are expecting the central bank to make a 25 point cut to the rate, bringing it to the 4 to 4.25 percent range.
For more on what’s moving markets this week, check out our top market news.
Markets and commodities react
Canadian equity markets were mostly positive this week. The S&P/TSX Composite Index (INDEXTSI:OSPTX) set another new record high on Thursday, climbing to 29,409.74 before retreating to end the week up 0.97 percent to 29,283.82.
The S&P/TSX Venture Composite Index (INDEXTSI:JX) performed even better, climbing 3.67 percent to finish Friday at 879.67. However, the CSE Composite Index (CSE:CSECOMP) went the opposite direction, shedding 2.17 percent to end the week at 153.81.
The gold price was in focus again this week as it climbed to a new record high of US$3,667 per ounce on Tuesday, as analysts predict a rate cut by the Federal Reserve when it meets next week. Gold ended the week up 2.74 percent at US$3,642.70 per ounce.
Silver had a similarly explosive week, climbing past US$42 per ounce for the first time since 2011 and gaining 3.82 percent on the week to close Friday at US$42.16.
Copper also saw gains this week rising 2.17 percent to US$4.65 per pound. Meanwhile, the S&P Goldman Sachs Commodities Index (INDEXSP:SPGSCI) posted a slight decrease of 0.1 percent to end the week at 548.34.
Top Canadian mining stocks this week
How did mining stocks perform against this backdrop?
Take a look at this week’s five best-performing Canadian mining stocks below.
Stocks data for this article was retrieved at 4:00 p.m. EDT on Friday using TradingView's stock screener. Only companies trading on the TSX, TSXV and CSE with market caps greater than C$10 million are included. Mineral companies within the non-energy minerals, energy minerals, process industry and producer manufacturing sectors were considered.
1. Guardian Exploration (TSXV:GX)
Weekly gain: 94.44 percent
Market cap: C$14.34 million
Share price: C$0.175
Guardian Exploration is an exploration and development company with a portfolio of oil and gas and mineral properties.
Among its properties is the Sun Dog gold project covering an area of 9,415 hectares in the Kivalliq Region in Nunavut, Canada. The site is located near the historic Cullaton Lake mine, which produced 100,000 ounces of gold between October 1981 and September 1985.
The company acquired the project on May 2 from New Break Resources (CSE:NBRK). Under the terms of the deal, Guardian received a 100 percent interest in the property, along with mineral rights and 60 drums of Jet A fuel in exchange for 5 million shares and a cash payment of C$75,000.
Guardian also reimbursed New Break C$18,830 for annual rent and granted New Break the option to buy back a 20 percent interest in the property for C$1.00.
The most recent news from the project came on Monday, when the company reported that it is commencing a one-month field program at the site that will include geological mapping, soil sampling and trenching. Guardian plans to perform follow-up exploration and drilling in 2026.
2. Sokoman Minerals (TSXV:SIC)
Weekly gain: 80 percent
Market cap: C$13.57 million
Share price: C$0.045
Sokoman Minerals is a discovery-oriented company with a portfolio of gold projects and one of the largest land positions in Newfoundland and Labrador, Canada. It also owns a 40 percent stake in the Killick lithium project, a 40/40/20 joint venture with Benton Resources (TSXV:BEX,OTC:BNTRF) and Piedmont Lithium (OTC Pink:PLLTL).
Its primary focus is on its flagship Moosehead gold project located in Central Newfoundland. The advanced project consists of 98 claims covering 2,450 hectares and hosts an orogenic Fosterville-style gold system, according to Sokoman. The company has defined seven zones with high-grade mineralization through over 130,000 meters of drilling.
Sokomon announced on Friday that it was commencing diamond drilling at the site with the focus on testing the Eastern and Western Trend gold zones for depth extensions as well as undiscovered parallel zones. The drill holes will test to a depth of 1,000 meters.
Additionally, the company reported on September 2 that it expanded its land position at its Crippleback Lake gold-copper property to 13,000 hectares and planned to mobilize for induced polarization surveys, sampling and mapping of the site immediately.
3. CopAur Minerals (TSXV:CPAU)
Weekly gain: 61.11 percent
Market cap: C$11.84 million
Share price: C$0.145
CopAur is a gold exploration and development company advancing its flagship Kinsley Mountain oxide gold project in Nevada, United States.
The project is home to a historic open pit gold mine that produced approximately 138,000 ounces between 1995 and 1999. According to the project page, the property hosts an indicated mineral resource of 418,000 ounces of gold with an average grade of 2.63 grams per metric ton (g/t) gold.
On August 7, the company announced that it was shifting its full focus to advance work at its Kinsey Mountain project.
The company’s most recent news came on Monday when it reported that it had hired Andrew Neale as its new CEO. Neale brings more than 35 years of mining experience to CopAur and has held senior positions with Freeport-McMoRan (NYSE:FCX) where he oversaw operations at its Grasberg copper-gold mine in Indonesia.
The company added that it was currently awaiting a decision from the Nevada Bureau of Land Management on a pair of permits for the Kinsey Mountain site, with one allowing it to test for reclamation at the heap leach pad and the other to allow it to restart production.
4. Silver North Resources (TSXV:SNAG)
Weekly gain: 60 percent
Market cap: C$26.72 million
Share price: C$0.40
Silver North Resources is primarily focused on advancing a portfolio of silver assets in the Yukon, Canada.
Its flagship Haldane silver project covers an area of 8,164 hectares in the Yukon’s Keno Hill Silver District and has seen silver exploration dating back to the late 1800s. The property hosts several deposits, including the Main Fault and the West Fault targets, which have produced high-grade silver assays up to 3,267 g/t over 1.26 meters at the West Fault and both zones hosting additional amounts of gold, lead, and zinc.
The company announced on August 15 that it commenced a 10 hole drill program at Haldane to follow up on the discovery of the Main Fault zone in 2024.
Additionally, the company announced on August 20 that it had begun its initial exploration program at the Veronica property at its GDR project in the Yukon. The program is eligible for partial funding up to C$30,000 as part of the Yukon Mineral Exploration Program.
5. Blue Star Gold (TSXV:BAU)
Weekly gain: 53.12 percent
Market cap: C$25.67 million
Share price: C$0.245
Blue Star Gold is a gold exploration and development company operating in Nunavut, Canada.
Its flagship asset is the Ulu gold project, which includes the Ulu mining lease and the Hood River property, together forming a 12,000 hectare land package. The property features a renewable 21 year mining lease for the advanced-stage Flood Zone deposit.
As per a February 2023 updated mineral resource estimate (MRE), Ulu holds a measured and indicated resource of 572,000 ounces of gold from 2.54 million metric tons of ore at an average grade of 7.02 g/t gold, along with an additional inferred resource of 303,000 ounces of gold from 1.28 million metric tons of ore at 7.34 g/t.
Blue Star also owns the Roma gold project, located on 11,532 hectares of crown mineral claims and 4,119 hectares of mineral exploration agreements in Nunavut's High Lake greenstone belt.
On Wednesday, Blue Star reported results from surface samples at its Auma prospect at Roma. The company said it had collected a total of 133 samples, with 44 returning gold grades above 1 g/t, including two samples with grades of 151 g/t and 125 g/t gold. The sampling program extended Zone 3, which is untested by drilling, by an additional 35 meters for a strike length of 130 meters.
Additionally, Blue Star also found high values of copper in quartz veining, with one sample producing a grade of 7.64 g/t gold and 4.2 percent copper.
FAQs for Canadian mining stocks
What is the difference between the TSX and TSXV?
The TSX, or Toronto Stock Exchange, is used by senior companies with larger market caps, and the TSXV, or TSX Venture Exchange, is used by smaller-cap companies. Companies listed on the TSXV can graduate to the senior exchange.
How many mining companies are listed on the TSX and TSXV?
As of May 2025, there were 1,565 companies listed on the TSXV, 910 of which were mining companies. Comparatively, the TSX was home to 1,899 companies, with 181 of those being mining companies.
Together, the TSX and TSXV host around 40 percent of the world’s public mining companies.
How much does it cost to list on the TSXV?
There are a variety of different fees that companies must pay to list on the TSXV, and according to the exchange, they can vary based on the transaction’s nature and complexity. The listing fee alone will most likely cost between C$10,000 to C$70,000. Accounting and auditing fees could rack up between C$25,000 and C$100,000, while legal fees are expected to be over C$75,000 and an underwriters’ commission may hit up to 12 percent.
The exchange lists a handful of other fees and expenses companies can expect, including but not limited to security commission and transfer agency fees, investor relations costs and director and officer liability insurance.
These are all just for the initial listing, of course. There are ongoing expenses once companies are trading, such as sustaining fees and additional listing fees, plus the costs associated with filing regular reports.
How do you trade on the TSXV?
Investors can trade on the TSXV the way they would trade stocks on any exchange. This means they can use a stock broker or an individual investment account to buy and sell shares of TSXV-listed companies during the exchange's trading hours.
Top 5 Canadian Mining Stocks This Week: Kirkland Lake Discovery Gains 88 Percent
Top 5 Canadian Mining Stocks This Week: Kirkland Lake Discovery Gains 88 PercentTop 5 Canadian Mining Stocks This Week: San Lorenzo Gold Shines with 329 Percent GainArticle by Dean Belder; FAQs by Lauren Kelly.
Don't forget to follow us @INN_Resource for real-time updates!
Securities Disclosure: I, Dean Belder, hold no direct investment interest in any company mentioned in this article.
Securities Disclosure: I, Lauren Kelly, hold no direct investment interest in any company mentioned in this article.
