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Astral Resources NL (ASX: AAR) (Astral or the Company) is pleased to report metallurgical test results for Hestia, Eos and Iris, part of the 100%-owned Mandilla Gold Project (Mandilla), located approximately 70km south of Kalgoorlie in Western Australia (Figure 1).
HIGHLIGHTS
- Exceptional metallurgical characteristics of the Mandilla Gold Project reconfirmed by recent test- work undertaken on samples from the Hestia, Eos and Iris deposits.
- Metallurgical testing was completed under a range of grind sizes and under very modest cyanide concentrations reflecting typical process plant conditions.
- Outstanding results were achieved, with extremely high gravity gold recoveries and very rapid leaching. At a 212µm grind size, the final gold recoveries achieved after only eight hours of leaching were:
- For Hestia, 96.5% gravity recovery, 99.5% final recovery;
- For Eos, 17.9% gravity recovery, 98.8% final recovery; and
- For Iris, 66.8% gravity recovery, 96.5% final recovery.
- Consistent with the results achieved previously at Theia, Mandilla’s flagship deposit, metallurgical results at Hestia, Eos and Iris demonstrate extremely high gold recoveries, fast leach kinetics and low reagent consumptions.
- Turning to exploration, the first phase of an in-fill RC program at Theia has recently been completed with 70 holes drilled for an aggregate 6,500 metres. The drill rig has relocated to the Feysville Gold Project to undertake a 34-hole (3,750 metres) program to test for extensions to the Kamperman deposit.
- Seven out of the 34 holes have already been completed; encouragingly, the first three holes, including a 200-metre step-out to the north and the two most north-eastern step-outs, have all intersected significant quartz and sulphide mineralisation which is a characteristic of the lithologies which host mineralisation elsewhere at Kamperman.
- Mineral Resource estimations are currently underway for Think Big, Rogan Josh and Kamperman – all at Feysville – and are expected to be reported later this month.
Astral Resources’ Managing Director Marc Ducler said: “The exceptional metallurgical results for Hestia, Eos and Iris continue to highlight the outstanding metallurgical characteristics of the Mandilla Gold Project. Typically, gold project studies in the Eastern Goldfields report initial metallurgical results based on 1,000ppm cyanide concentrations and 75µm grind sizes. The confidence in the Mandilla Gold Project gained from prior studies allowed us to successfully test much lower cyanide levels at much coarser grind sizes that would deliver very low processing costs yet still achieve sector-leading gold recoveries.
“To date, we have conducted 20 gravity and leach tests at Mandilla, with the gold remaining in the assayed tail averaging 0.02g/t Au. This demonstrates that the 95.7% gold recovery assumption used in the Scoping Study, while considered high by industry standards, is potentially conservative when considering the excellent metallurgical properties being demonstrated at Mandilla.
“These new results significantly de-risk Mandilla, confirming the ability to generate high gold recoveries in easily achievable, real-world processing plant conditions.
“This will positively impact the metrics and economics of the Mandilla Gold Project Pre-Feasibility Study which is expected to be completed in the June quarter 2025.
“I note that, in the Scoping Study announced on 21 September 2023, no contribution was included for Iris where a Mineral Resource of 115koz is currently mapped. However, in light of these metallurgical results as well as the increase in gold price since the Study was released, it is anticipated that ore from Iris may be included as part of the Pre-Feasibility Study.
“Turning to exploration, drilling activities are progressing well, with the latest phase of in-fill RC drilling at Theia completed. The drill rig has since been relocated to Feysville to complete further extensional and in-fill drilling at Kamperman with seven holes already completed. Importantly, step-out holes up to 200 metres further north of the current known extents of gold mineralisation have intersected significant quartz and sulphide mineralisation which is similar in characteristic to the lithologies which host gold mineralisation at Kamperman.
“With Mineral Resource Estimation work currently underway at Feysville, the team has also taken the opportunity to refine the geological models for the Hestia and Eos deposits. Updated MRE’s are now expected later this month for Think Big, Rogan Josh and Kamperman at Feysville, with Hestia and Eos to follow later in the December Quarter.”
Figure 1 - Map illustrating location of Mandilla and Feysville Gold Projects.
MANDILLA GOLD PROJECT
The Mandilla Gold Project is situated in the northern Widgiemooltha greenstone belt, approximately 70 kilometres south of the significant mining centre of Kalgoorlie, Western Australia.
The area hosts world-class deposits such as the Golden Mile Super Pit in Kalgoorlie owned by Northern Star Resources Limited (ASX:NST) and the St Ives Gold Mine south of Kambalda owned by Gold Fields Limited, as well as the substantial Beta Hunt Gold Mine owned by Westgold Resources Limited (ASX:WGX).
Mandilla is covered by existing Mining Leases which are not subject to any third‐party royalties other than the standard WA Government gold royalty.
The Mandilla Gold Project includes the Theia, Iris, Eos and Hestia deposits.
Gold mineralisation at Theia and Iris is comprised of structurally controlled quartz vein arrays and hydrothermal alteration close to the western margin of the Emu Rocks Granite and locally in contact with sediments of the Spargoville Group.
Significant NW to WNW-trending structures along the western flank of the project are interpreted from aeromagnetic data to cut through the granitic intrusion. These structures are considered important in localising gold mineralisation at Theia, which has a mineralised footprint extending over a strike length of more than 1.6km.
A second sub-parallel structure hosts gold mineralisation at the Iris deposit. The mineralised footprint at Iris extends over a strike length of approximately 600 metres, combining with Theia to form a mineralised zone extending over a strike length of more than 2.2 kilometres.
At Eos, located further to the south-east, a relatively shallow high-grade mineralised palaeochannel deposit has been identified and which extends over a length of approximately 600 metres. A primary gold source is also present with further drilling required to determine both the nature and structural controls on mineralisation and its extent.
Mineralisation delineated over approximately 800 metres of strike at the Hestia deposit, located approximately 500 metres west of Theia, is associated with a shear zone adjacent to a mafic/sediment contact, interpreted to be part of the major north-south trending group of thrust faults known as the Spargoville Shear Corridor.
Locally, the Spargoville Shear Corridor hosts the historically mined Wattle Dam gold mine (266koz at 10.6g/t Au) and, further to the north, the Ghost Crab/Mt Marion mine (>1Moz).
The mineralisation at Hestia, which is present in a different geological setting to bedrock mineralisation at Theia and Iris, remains open both down-dip and along strike.
In July 2023, Astral announced a Mineral Resource Estimate (MRE) of 37Mt at 1.1 g/t Au for 1.27Moz of contained gold1 for the Mandilla Gold Project.
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This article includes content from Astral Resources, 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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Astral Resources
Investor Insight
Astral Resources presents a compelling investment case as an ASX-listed gold explorer with a 1.46 Moz resource base in Western Australia's premier Kalgoorlie region, anchored by its flagship Mandilla project which demonstrates robust economics with an AU$442 million NPV and 11-year mine life.
Overview
Astral Resources (ASX:AAR) is a gold mineral exploration company with three gold projects in tier 1 mining jurisdictions of Western Australia. The three assets are the Mandilla gold project, the Feysville gold project, and the Carnilya Hill gold project. The flagship and 100 percent owned Mandilla gold project has a mineral resource containing 1.27 million ounces (Moz) of contained gold. The other key project, 100 percent owned Feysville, hosts an updated Mineral Resource Estimate (MRE) of 5.0 Mt at 1.2g/t gold for 196 koz of contained gold . Feysville could potentially become a satellite source of high-grade ore feed for the flagship Mandilla gold project.
The scoping study completed at Mandilla unveils robust project economics. The cornerstone of the scoping study is the Theia deposit, which alone accounts for 81 percent of the total Mandilla mineral resource estimate. The deposit hosts a mineral resource estimate of 29 Mt at 1.1 g/t gold for 1.02 Moz of contained gold in one large open pit. The scoping study indicates a mine life of 11 years with an annual production of 100,000 oz in the first seven and a half years, dropping to 41,000 oz for the remaining three and a half years. The study outlines compelling financial metrics, including NPV@8 percent of AU$442 million, free cash flow of AU$740 million, and a payback period of nine months.
Astral benefits from a team of professionals boasting extensive expertise in geology and mining.
The company is led by managing director Marc Ducler, who has more than two decades of experience in the mining industry. The management team has a proven track record of executing several successful exploration and development projects, as well as M&A.
Company Highlights
- Astral Resources is an ASX-listed gold exploration company in the Kalgoorlie region of Western Australia, a tier 1 jurisdiction and a mature mining region with a successful development history and granted mining leases.
- The company has three assets - the Mandilla gold project, the Feysville gold project, and the Carnilya Hill gold exploration project.
- The focus is on advancing its flagship Mandilla gold project, with a mineral resource estimate of 37 Mt at 1.1 g/t gold for 1.27 Moz.
- The scoping study at Mandilla highlights the project’s robust economics with a mine life of 11 years, NPV@8 percent of AU$442 million, and free cash flow of AU$740 million.
- Mandilla’s cornerstone Theia deposit comprises 81 percent of the project’s resources, contains 29 Mt at 1.1 g/t gold, with 1.02 Moz of contained gold in one large open pit.
- Updated JORC 2012 mineral resource estimate (MRE) at the Feysville gold project is 5.0Mt at 1.2g/t gold for 196koz of contained gold.
- Including the Mandilla MRE of 37Mt at 1.1g/t gold for 1.27Moz of contained gold, Astral’s total gold MRE is now calculated to be 42Mt at 1.1g/t gold for 1.46Moz of contained gold (Group MRE).
- The company is led by an experienced team with a proven track record of advancing projects to development and M&A.
Key Projects
Mandilla Gold Project
The Mandilla gold project is located within the northern region of the Widgiemooltha greenstone belt, approximately 70 kilometers to the south of the prominent mining hub of Kalgoorlie, Western Australia. Mandilla includes four deposits namely, Theia, Iris, Eos and Hestia. The cornerstone of the project is the Theia deposit, constituting 81 percent of Mandilla's resources, totaling 29 Mt at a grade of 1.1 g/t gold, amounting to 1.02 Moz of contained gold in a single open pit. Mandilla has a total mineral resource estimate of 37 Mt at 1.1 g/t gold for 1.27 Moz.
The scoping study indicates a mine life of 11 years with an annual production of 100,000 oz in the first seven and a half years, dropping to 41,000 oz for the remaining three and a half years. Astral estimates the pre-production capital spend at AU$191 million, and the project is anticipated to generate a free cash flow of AU$740 million (assuming a gold price of A$2,750/oz). The project’s NPV @8 percent is estimated at AU$442 million, and the IRR at 73 percent.
Drill collars at Theia deposit
Astral continues to advance exploration and resource expansion efforts at Mandilla. The company recently completed a four-hole 1,762-metre in-fill diamond drilling program at the Theia deposit late last year. Best results included: 28 metres at 2.63 g/t gold, 15.5 metres at 1.81 g/t gold, 9.6 metres at 27.6 g/t gold, 2.4 metres at 169.1 g/t gold, 24.9 metres at 4.14 g/t gold and 72.2 metres at 1.15 g/t gold.
Astral has commenced work on a pre-feasibility study at Mandilla, which is due in the June quarter 2025.
Feysville Gold Project
The Feysville project is situated in Australia's premier gold belt, merely 14 km south of the Golden Mile deposit, which boasts 70 million ounces, located in Kalgoorlie. The project's updated JORC 2012 MRE indicates 5.0 Mt at 1.2 g/t gold for 196 koz of contained gold. Including the Mandilla MRE of 37 Mt at 1.1 g/t gold for 1.27 Moz of contained gold, Astral’s total gold MRE is now calculated to be 42 Mt at 1.1 g/t gold for 1.46 Moz of contained gold (group MRE).
At Feysville, Astral is focusing on the high-grade Kamperman prospect. A recent 31-hole (3,834 m) reverse circulation (RC) drilling program at Kamperman returned encouraging assay results. The latest drilling program returned best assay results of 33 metres at 3.75 g/t gold, 22 metres at 5.21 g/t gold, and 22 metres at 4.44 g/t gold. This high success rate continues to indicate that Kamperman has the potential to be a substantial source of high-grade satellite ore for the Mandilla processing plant.
Carnilya Gold Project
The Carnilya Hill gold project is situated about 20 kilometers south-southeast of the company's Feysville project and approximately 40 kilometers southeast of Kalgoorlie, Western Australia. The project encompasses various tenements – M26/047-049, M26/453 – spanning approximately 2.65 sq. km. Astral holds rights for gold mining, while Mincor Resources NL (ASX:MCR) holds rights to nickel and other minerals.Management Team
Mark Connelly – Non-executive Chairman
Mark Connelly is a mining industry veteran who has held positions of CEO and managing director with several multinational companies across many jurisdictions, including Australia, North America, South America, Africa and Europe. He has a proven track record in deal making and was principally responsible for the merger of Papillon Resources and B2 Gold Corp in October 2014 (value US$570 million), as well as the key person responsible for the merger of Adamus Resources and Endeavour Mining for US$579 million. He is currently the non-executive chair of Calidus Resources, Omnia Metals Group, Alto Metals, Warriedar Resources and Nickel Search.
Marc Ducler – Managing Director
Marc Ducler has more than 20 years of experience in the mining industry. He has held senior operational management roles with GoldFields, BHP, Fortescue Metals, MRL and Roy Hill. He was also the managing director of Egan Street Resources (a gold exploration and development company) until it was acquired by Silver Lake Resources (ASX:SLR).
Peter Stern – Non-executive Director
Peter Stern has experience in corporate advisory, specializing in M&A and capital raising. He has spent six years with Macquarie Bank and three years with UBS and Deutsche Bank. He is a graduate of Monash University with a Bachelor of Science (geology major). Stern is a fellow of the Australian Institute of Company Directors and the chairman of Troy Resources.
David Varcoe – Non-executive Director
David Varcoe is a mining engineer with over three decades of experience. He has extensive operational and managerial experience across various commodities, including gold, iron ore, copper, diamonds, coal, uranium and rare earths. His expertise spans board positions, operations management, project management and consulting. Varcoe is a principal consultant with the leading Australian firm AMC Consulting.
Justin Osborne – Non-executive Director
Justin Osborne is a geologist with over 30 years of experience in exploration. He was previously the executive director at Gold Road Resources (ASX:GOR), where he played a crucial role in developing the world-class Gruyere gold deposit (6.6 Moz gold). Osborne also held senior positions on the exploration executive team at Gold Fields. He was instrumental in developing the Damang Superpit project in Ghana and achieved significant discovery success at the St Ives gold mine.
Brendon Morton – Chief Financial Officer & Company Secretary
Brendon Morton has over 20 years of experience, particularly in the global resources sector across Australia, Africa and Asia. He has held several executive financial and company secretarial roles with ASX-listed and unlisted companies in the resources industry.
Steve Lampron – Technical Services Manager
Steve Lampron is a mining engineer with more than 20 years industry experience. As well as having worked in production roles for companies such as Placer Dome, Barrick and North American Palladium he has also worked as a Consultant for over 10 years.
Julie Reid – Geology Manager
Julie Reid has 36 years of experience working across Australia, Vietnam and Indonesia, covering a variety of commodities in diverse geological terrains. She holds a Bachelor of Applied Science from Curtin University of Technology.
Gold exploration with highly prospective assets in Western Australia
OPINION — Goldenomics 104: Trump’s Tariffs and Gold
By Darren Brady Nelson
One of former President Ronald Reagan’s most famous quotes is “trust, but verify.” He made that remark on December 8, 1987, to then-Soviet General Secretary Mikhail Gorbachev as the audience gathered on that historic day for a nuclear arms treaty.
In the wake of US President Donald Trump’s April “Liberation Day” tariffs, it is time once again to “trust, but verify.” That is, that the economy is still on track for a new “golden age of America.” And that we will continue in a “golden age,” pun intended, for investing in gold.
Source: the White House.
Tariffs are not inflation
Trump’s tariffs have added to uncertainty, but they are not inflationary per se. The famous Nobel Prize-winning monetary economist, Milton Friedman, summarized what he had learned from the most comprehensive empirical study ever undertaken on inflation in the following quote:
“Inflation is always and everywhere a monetary phenomenon in the sense that it is and can be produced only by a more rapid increase in the quantity of money than in output. A steady rate of monetary growth at a moderate level [may allow] little inflation and much growth.”
Another monetary economist of the 20th century, but not quite as famous as Friedman, was Ludwig von Mises. He agreed with the first half of the quote above, but not the second. He also supported a gold standard, as seen below, as protection from inflation and accompanying boom-bust cycles:
“All economic activity is based upon an uncertain future. It is therefore bound up with risk.” Thus: “There is no such thing as a safe investment.” But: “The…gold standard alone is a truly effective check on the power of the government to inflate the currency.”
Tariffs are just taxes
A student of Mises was Murray Rothbard. The latter wrote in Power and Market that the burden of a sales tax falls entirely on the supplier and supply chain, not the consumers, yet tariffs inexplicably do the opposite. The former is closer to the truth, depending on elasticities.
Media pundits often claim that businesses pass forward tax increases, like tariffs, to consumers. This is a half-truth. The other half of this half-truth is that businesses take a hit, so that they invest and hire less. This means foreign businesses, more than American consumers.
And rather than just a 50/50 split between supply and demand, as per the graph below, economics and history show it is more like an 80/20 situation. That 80 includes a pass backward in the supply chain. This means foreign supply chains, more than American supply chains.
Source: SlidePlayer.
Rationale for Trump’s tariffs
Trump’s tariffs have created extra uncertainty, but not nearly as much as the neoliberals, on the left or right, would suggest by their outrage and alarm. Firstly, imports and import elasticities are relatively low in the US.
Secondly, Trump’s strategy is consistent with the same three exceptions to free trade, and in the same order, as did the classical liberal, and godfather of free trade economics, Adam Smith.
The first exception is not only about directly decoupling from communist China, for targeted defense purposes, but also indirectly, for broader strategic purposes, by weakening the Communist Party of China to the point of regime change, as Reagan did to the USSR.
The second and third exceptions, of reciprocity and retaliation, are part of the “art of the deal.” This three-pronged strategy, despite the outcry as being anti-free trade, is not only trying to put America first, but also to restore genuine free trade. It is a well-calculated risk.
Impact of these tariffs
According to the US Bureau of Labor Statistics (BLS) in its press release of July 17: “Import prices ticked up 0.1% in June, following a decrease of 0.4% in May, and an advance of 0.1% in April.”
The BLS added that: “Prices for US imports fell 0.2% from June 2024 to June 2025, matching the 12- month decline for the year ended May 2025. Those were the largest annual decreases since the index fell 0.9% for the year ended February 2024.”
The BLS also provided an interactive chart of the Import Price Index (IPI). Highlights from the Trump 47 era for “all imports” include: IPI increased, but at a declining rate, by 1.7 percent in February, 0.8 percent in March and 0.1 percent in April; then decreased by -0.2 percent in May and -0.2 percent in June.
“Consumer goods” are also illuminating: IPI dropped from 1.2 percent in November 2024 to -0.8 percent in March 2025; then sunk further to -1.2 percent in May before rising to -0.6 percent in June, but still negative.
The story with “industrial supplies and materials” was that: IPI grew at 5.7 percent in February, then plunged to 1.9 percent in March; followed by shrinking down into negative territory of -2 percent in April, -3.6 percent in May and -3.2 percent in June.
Source: BLS.
Conclusion
Many Main Street investors, and even those on Wall Street, are aware that gold is a great hedge against both inflation and uncertainty; and it is. But few on either streets also know that it is a great investment that outperforms the S&P Index; and it does.
Gold is very rare indeed, and not just in terms of its physical scarcity, but in its unique ability to be both a safe-haven investment and a performance investment as well. The two charts at the end demonstrate gold’s protection and gold’s growth over the decades.
Therefore, for American investors it is still the right time to “trust” in gold growth to come, “but verify” through gold protection in the meantime. Thus, when one has gold, “heads” you win and “tails” you don’t lose.
About Darren Brady Nelson
Darren Brady Nelson is chief economist with Fisher Liberty Gold and policy advisor to The Heartland Institute. He previously was economic advisor to Australian Senator Malcolm Roberts. He authored the Ten Principles of Regulation and Reform, and the CPI-X approach to budget cuts.
Read the rest of the series: Goldenomics 101: Follow the Money, Goldenomics 102: The Shadow Price of Gold, Goldenomics 103: Gold Protects and Performs.
Alice Queen: Exploring High-grade Epithermal Gold with Near-term Production Potential
Alice Queen (ASX:AQX) is a gold exploration company focused on district-scale discoveries and near-term production opportunities. Its flagship asset is the Viani Gold Project in Fiji, where early drilling indicates a major epithermal gold system, comparable to other systems along the Pacific Ring of Fire. Fiji itself hosts the 10 Moz Vatukoula Gold Mine, underscoring the region’s proven prospectivity. With a portfolio spanning both the Pacific Ring of Fire and Australia’s most prolific gold belts, Alice Queen combines strong geological potential with strategic access to capital.
The company’s secondary asset, Horn Island, hosts over half a million ounces of gold in a JORC-compliant resource. A 2021 scoping study indicated an NPV of more than AU$500 million, based on an internal update using AU$5,000/oz gold. Ongoing discussions with development partners aim to unlock value from this project, which has the potential to generate over AU$800 million in free cash flow across an eight-year mine life.
Alice Queen’s shareholder base is anchored by Gage Resource Development (51 percent) and supported by significant, well-funded Australian investors with a long-term outlook. The company is advancing a balanced strategy focused on drilling success, strategic partnerships, and asset-level monetization.
Company Highlights
- High-impact Discovery at Viani in Fiji: Drilling at the Viani project has confirmed a significant low-sulphidation epithermal gold system with mineralization over a ~5 km strike, with assay results from recent drilling expected imminently.
- Established Gold Resource at Horn Island: The Horn Island project hosts a 524,000 oz JORC-compliant gold resource and is being advanced through potential development partnerships, offering near-term monetization opportunities.
- Strategic Financial Backing: Backed by major shareholder Gage Resource Development, a subsidiary of Beijing-based Gage Capital (US$1.6 billion AUM), ensuring access to growth capital and long-term support.
- Exceptional Leadership: Led by a highly experienced management team with a successful track record in global business and resource development.
This Alice Queen Limited profile is part of a paid investor education campaign.*
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