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Castle Minerals Limited (“Castle” or the “Company”) advises that a recently completed eight-hole, 1,106m RC drill programme at its Kpali Gold Prospect in Ghana’s Upper West Region (“Project”, “Kpali”) has intersected mineralisation in all holes including 12m at 8.29g/t Au from 25m including 6m at 11.60g/t Au from 31m and a peak 1m intercept of 20.43g/t Au at 36m in an interpreted ‘hangingwall’ lode and then 4m at 4.16g/t Au from 95m in a lower “footwall” lode (24KPRC010).
- Extremely strong gold intercepts from eight-hole RC drilling programme at Kpali Gold Prospect in Ghana’s Upper West Region.
- All eight holes intersected shallow mineralisation with better intercepts including:
- 12m at 8.29g/t Au from 25m (24KPRC010) incl.
- 6m at 11.60g/t Au from 31m and
- a peak 1m intercept of 20.43g/t Au at 36m and
- 4m at 4.16g/t Au from 95m.
- 7m at 2.23g/t Au from 35m (24KPRC011) incl.
- 4m at 3.23g/t Au from 35m and
- 11m at 2.24g/t Au from 50m incl.
- 1m at 8.29g/t Au from 57m.
- 5m at 3.66 g/t Au from 78m (24KPRC012) incl.
- 2m at 7.09g/t Au 79m.
- 13m at 1.58g/t Au from 73m (24KPRC014) incl.
- 1m at 5.62g/t Au from 79m.
- 1m at 8.35g/t Au from 5m (24KPRC015) and
- 9m at 4.81g/t Au from 107m incl.
- 2m at 8.75g/t Au from 109m.
- 1m at 6.64g/t Au from 70m (24KPRC016).
- 7m at 1.67g/t Au from 39m (24KPRC017) and
- 3m at 3.08g/t Au from 78m.
- 12m at 8.29g/t Au from 25m (24KPRC010) incl.
- Status of Kpali Gold Prospect considerably upgraded.
- Broader district containing several other high conviction prospects confirmed as an emerging new exploration frontier.
- Next drilling programme to comprise step-out drilling at Kpali Gold Prospect and testing of other prospects including equally prospective Bundi discovery.
- Results hot on heels of recent Kandia “4000 Zone” RC programme that confirmed good gold continuity and returned strong intercepts including:
- 7m at 3.36g/t Au from 149m within 24m at 1.78g/t Au from 139m (24KARC002) and
- 5m at 3.49g/t Au from 82m within 11m at 2.26g/t Au from 79m (24KARC004).
- Immediate high-level objective is to confirm robust new West African mining camps at Kpali and Kandia and an initial 1.0Moz Au multi-prospect based mineral resource.
Castle Executive Chairman, Stephen Stone, commented “The Kpali Gold Prospect is developing into a robust discovery and is a strong indicator that we may be dealing with a new West African gold mining camp in Ghana’s emerging northern region.
The latest intercepts include some very decent widths and grades at shallow depths with good continuity which can have considerable positive impacts should mining be considered.
Fig 1: Kpali Gold Prospect: Plan showing latest drill results and outline of interpreted multiple mineralised sub-parallel lodes on simplified sub-surface geology.
We have intersected a very impressive 12m at 8.29g/t Au from 25m, including 6m at 11.60g/t Au from 31m and a peak 1m intercept of 20.43g/t Au at 36m in a ‘hangingwall’ lode, and also 4m at 4.16g/t Au from 95m in a lower ‘footwall’ lode.
Apart from these standout results, very strong mineralisation has been encountered within most holes drilled, implying that with additional drilling we may be able to delineate a decent high value deposit.
We are very keen to get back drilling and to extend the Kpali Gold Prospect discovery as well as to follow-up historical drilling at the nearby Bundi discovery, 4km north.
There are also several other enticing prospects in the broader Kpali Gold Project area.
These drilling results follow excellent recent results from four holes at the Kandia Prospect, a second and separate gold discovery associated with a relatively under- explored 16km prospective contact between Birimian metasediments and a granite intrusion. Recent intercepts at Kandia included 7m at 3.36g/t Au from 149m within 24m at 1.78g/t Au from 139m and 5m at 3.49g/t Au from 82m within 11m at 2.26g/t Au from 79m.
These deposits lie in a classic setting for major gold deposits in West Africa and in particular northern Ghana which hosts the Cardinal Resources 5.1Moz gold Namdini deposit and the Azumah Resources 2.8Moz gold Black Volta Gold Project. The latter’s high-grade Julie deposit is immediately along strike from Kandia.
West Africa is where big gold discoveries can be and are still being made. With the gold price now at a level I could only dream of when starting my career, it’s the perfect time to be exploring Castle’s two new discoveries in the very stable, safe and mining friendly jurisdiction of Ghana.”
Fig 2: North-south long-section through mineralised hangingwall and footwall lodes at Kpali highlighting zones of shallow plunging, high-grade gold mineralisation.
Additional intercepts included 7m at 2.23g/t Au from 35m(24KPRC011) including 11m at 2.24g/t Au from 50m, 5m at 3.6g/t Au from 78m (24KPRC012), 9m at 4.81g/t Au from 107m (24KPRC015) and 3m at 3.08g/t Au from 78m (KPRC017).
These results confirm the Kpali Gold Prospect, just one of several prospects within the broader Kpali Gold Project, as a robust discovery in a completely new district within Ghana’s emerging Northern Region exploration frontier.
With several other high conviction prospects yet to be evaluated in the area, including the nearby Bundi, Kpali East, Wa South East and Wa South West prospects, there appears to be present all the hallmarks of a new West African mining camp and the possibility of a considerable gold endowment.
The Kpali Gold Prospect lies within a mineralised corridor associated with a 30m to 50m wide zone of structural deformation immediately west of a granite intrusion. Three drilling programmes have identified near-surface, shallow plunging high-grade lode-style mineralisation to a depth of at least 100m. Multiple, closely-spaced mineralised lodes have been identified over at least 650m strike.
Overall, the geological setting at the broader Kpali Gold Project is of typically structurally-controlled, orogenic style mineralisation within Birimian terrane. This is a similar setting as that hosting several world- class gold mining operations in Ghana and West Africa generally. Orebodies with these characteristics can often extend to considerable depth.
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This article includes content from Castle Minerals Limited, 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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Castle Minerals
Investor Insight
Castle Minerals is a compelling investment opportunity, underlined by its 100 percent ownership of two high-potential gold projects, a seasoned management team with a track record of success, and a strategic location near multi-million-ounce gold deposits.
Overview
Castle Minerals (ASX:CDT) is an Australia-based exploration company dedicated to advancing high-value gold projects in Ghana, West Africa. The company holds a 100 percent interest in a highly strategic 2,686 sq. km land package within Ghana’s Upper West region, a significantly under-explored yet highly prospective geological setting within the West African gold belt.
Castle Minerals’ core mission is to identify, explore and develop economically viable gold deposits, leveraging the region’s rich mineralization and proven mining history. The company's management team brings extensive experience and a strong track record of successful discoveries, ensuring that exploration efforts are guided by industry-leading expertise and strategic execution.
Castle’s portfolio is centered around its flagship Kpali and Kandia gold projects, both of which exhibit strong potential for resource expansion and economic development. These projects are situated within prolific gold-bearing structures and have demonstrated high-grade mineralization through extensive exploration efforts. With a focus on systematic exploration, the company aims to delineate and expand resources while positioning itself as a leading player in Ghana’s growing gold industry. Castle’s commitment to sustainable exploration practices and strong community engagement further enhances its ability to operate effectively in the region.
Company Highlights
- 100 percent ownership of a 2,686 sq km strategic landholding in Ghana’s highly prospective Upper West region.
- Flagship Kpali and Kandia gold projects with high-grade gold mineralization and significant resource expansion potential.
- Strong management team with a proven track record in West African gold discoveries and project development.
- Proximity to the multi-million-ounce Black Volta gold project, enhancing economic potential and development synergies.
- Robust exploration pipeline with systematic drilling programs aimed at resource expansion and near-term development.
- Commitment to sustainable and responsible exploration practices, with strong community and government engagement.
- Positioned to capitalize on the growing global demand for gold through disciplined exploration and strategic partnerships.
Key Projects
Kpali Gold Project
The Kpali gold project, a cornerstone of Castle Minerals' exploration efforts, is strategically located approximately 30 kilometers west of the regional town of Sawla in Ghana's Upper West region. Encompassing the Kpali and Bundi prospects, along with several satellite discoveries, the project area lies within the 170 sq km Degbiwu prospecting license (PL 10/26), which is encircled by the 1,033 sq km Gbiniyiri retention license (RL 8/27). Notably, the western boundaries of these licenses are delineated by the Black Volta River, marking the border with Burkina Faso.
Geologically, Kpali is situated at the convergence of two significant greenstone belts — the Bole-Bolgatanga and Wa-Lawra/Boromo belts — and three regional-scale structures. This unique positioning is associated with several major Birimian-hosted gold deposits in the region, enhancing the project's potential for substantial gold mineralization.
Recent exploration activities have yielded promising results. In February 2025, an eight-hole reverse circulation (RC) drilling program intersected shallow, high-grade mineralization in all holes. Notable intercepts include 12 meters at 8.29 grams per ton (g/t) gold from 25 meters, including 6 meters at 11.60 g/t gold from 31 meters, with a peak 1-meter intercept of 20.43 g/t gold at 36 meters. These findings have significantly upgraded the status of the Kpali gold prospect, suggesting the presence of multiple sub-parallel lodes with high-grade gold mineralization.
The broader district encompassing Kpali contains several other high-conviction prospects, reinforcing its potential as an emerging new exploration frontier. Castle Minerals plans to undertake further drilling programs, including step-out drilling, to delineate the extent of mineralization and assess the project's viability for future development.
In summary, the Kpali Gold Project's strategic location, favorable geology, and recent high-grade drilling results position it as a significant asset within Castle Minerals' portfolio, with the potential to evolve into a major gold production site in Ghana.
Kandia Gold Project
The Kandia gold project is situated in Ghana's Upper West Region. Discovered in 2010 during reconnaissance field mapping, the project encompasses a 16-kilometer-long corridor along a significant granite-sediment contact within Birimian greenstone terrain. This geological setting is known for hosting substantial gold mineralization, with the Kandia prospect itself identified through previously unknown artisanal workings spread over approximately 600 meters of strike.
Initial exploration efforts included extensive soil sampling, airborne geophysical surveys and RC drilling, totaling 264 holes over 19,541 meters. These activities led to the identification of two primary mineralized zones: the "4,000 Zone" and the "8,000 Zone."
Strategically, the Kandia project benefits from its proximity to major gold deposits. The 5.1-million-ounce Namdini gold project lies to the northeast on the same Bole-Bolgatanga greenstone belt, while the 2.8-million-ounce Black Volta gold project's Julie deposit is immediately along strike from the Kandia mineralized trend. This favorable location enhances Kandia's economic attractiveness and potential for development synergies.
Future exploration plans for Kandia involve extensional drilling at the "4,000 Zone" and targeted drilling in other areas with historically wide-spaced shallow drilling, such as the "8,000 Zone," where artisanal mining activities are also present. The primary objective is to delineate multiple near-surface, open-pitable deposits along the 16-kilometer prospective contact, advancing the project toward potential development.
Management Team
Stephen Stone - Executive Chairman
Stephen Stone has more than 30 years of experience in mining and exploration. As the former managing director of Azumah Resources, he led the discovery of a 2.5 Moz gold resource and 1.2 Moz ore reserve at the Wa gold project His expertise in West African gold exploration and project development is instrumental in guiding Castle’s strategic direction.
Matthew Horgan - Non-executive Director
Matthew Horgan brings a strong background in engineering, business development, and investor relations. His experience in strategic corporate growth and resource sector financing supports Castle’s development initiatives.
James Guy - Non-executive Director
James Guy is a geologist with extensive expertise in mining and exploration, specializing in gold and base metals projects across Africa and Australia. He has held senior executive positions with several ASX listed junior resources companies and with banking group, NR Rothschild & Sons. He is currently principal of James Guy & Associates
David Renner - Non-executive Director
David Renner has a strong track record in operations and corporate strategy for resource development. He is a key contributor to advancing the Kambale graphite project.
Hector Nyinaku, Non-executive Director
Hecto Nyinaku focuses on administration, finance and logistics within the mining industry. His strong networks in Ghana’s resource sector provide valuable operational support.
George Asomoah Boadu - Manager of Geology
George Asomoah Boadu has extensive field experience in Ghana’s gold and graphite exploration projects. His expertise is integral to defining Castle’s resource base and implementing effective exploration strategies.
Advancing strategic gold exploration assets in Ghana’s prolific Upper West region
Navigating Uncertainty: How Trump's Tariffs Are Affecting the Gold Market
Read on to learn how tariffs have affected the gold market and price so far.
How have tariffs affected the gold price?
The gold price has been on the rise since the beginning of the year. After briefly touching the US$3,500 per ounce level in May, it has pulled back and was trading just under US$3,400 as of Tuesday (August 26).
Gold price, January 1 to August 26, 2025.
Chart via TradingEconomics.
Although some of its increase is attributable to the points mentioned above, a significant portion is owed to a lack of information surrounding US President Donald Trump’s tariff policies.
Initially there was no clarity on what or who was being tariffed, or when the levies would ultimately be implemented, and investors started to move into gold for greater stability and portfolio diversification.
Uncertainty about whether gold would be tariffed also had an effect, prompting traders in the US to import physical gold; this created a price differential between New York futures and the London spot price.
Concerns dissipated as the Trump administration began to nail down tariffs, but were reignited once again when US Customs and Border Patrol posted a ruling on July 31 indicating that the 39 percent tariffs against imports from Switzerland would include 1 kilogram and 100 ounce gold bars.
The news caused spot gold to spike more than 3 percent, from US$3,290 to US$3,398, and sent December futures to an all-time high of US$3,549. Meanwhile, traders halted imports of Swiss bars.
After several days of turmoil, Trump said the ruling was incorrect, and the bars would not be included in the tariff measures being applied to other Swiss imports; the gold price then retreated.
How would gold tariffs have impacted the market?
Gold functions as both a commodity and an essential part of the world’s financial system.
One kilogram and 100 ounce gold bars are used to back futures trading, and regular shipments of the metal are needed to settle contracts once they come due. A 39 percent tariff on gold from Switzerland would have been particularly disruptive, as Swiss refineries account for approximately 70 percent of the world’s gold.
According to the UN Comtrade database, in 2024, Switzerland exported more than 1,400 metric tons of unwrought gold worth more than US$106 billion, representing nearly 30 percent of the country’s total exports. Tariffs would have forced US buyers to pay a significant premium for the precious metal versus buyers in London or Shanghai.
Because gold is often used as a store of value in times of uncertainty, any kind of disruption could have had broader implications for investors looking to add stability to their portfolios.
In an email to the Investing News Network (INN), Lauren Saidel-Baker, CFA, an economist with ITR Economics, explained that gold stands out as a unique investment mechanism:
“There are psychological nuances to gold, which is commonly viewed as a safe store of value during uncertain times and an inflation hedge. Overall, the tariff would have added another facet to the already elevated policy uncertainty."
If the tariffs had remained in place, the US gold price would have had to rise to around US$4,700 per ounce to cover levies, while international prices would have remained closer to the US$3,500 mark.
“Tariffs have already complicated supply chains across industries, and this gold tariff would have been another example of added cost and complexity — but in this case, one with the potential to more directly impact investment activities,” Saidel-Baker went on to explain, emphasizing that US investors would have felt the pinch.
Could gold tariffs happen in the future?
Given Trump's unpredictability, especially when it comes to tariffs, it's possible that gold levies could enter the conversation again. However, by and large experts agree that the matter is closed.
“I think it’s pretty clear at this point that there’s no intention to put tariffs on physical gold imports, and I think that would be very damaging and destructive if they did,” Stefan Gleason, CEO of Money Metals, told INN.
Keith Weiner, founder and CEO of Monetary Metals, offered another perspective, saying that although the gold tariff threat is over, the tumult could have long-term effects on the market.
"Once you've put the scare into everybody, you can't just say, 'Oh, sorry, just kidding.' You can't really do that. And so now we've done damage, and we'll see what happens to that spread over time. We'll see how users of the futures market adapt. There are other markets in the world that would be competing for," he explained.
"This hedging business, you know, maybe it moves to Singapore, maybe it moves to Dubai, maybe it moves to London, and the US loses not only a little more trust, but also a little bit of volume on what had been the biggest — or what is currently the biggest — futures market," Weiner added to INN.
Market participants will be watching closely for future impacts on the yellow metal.
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.
Editorial Disclosure: The Investing News Network does not guarantee the accuracy or thoroughness of the information reported in the interviews it conducts. The opinions expressed in these interviews do not reflect the opinions of the Investing News Network and do not constitute investment advice. All readers are encouraged to perform their own due diligence.
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