Canadian explorer GoldCoast Resource Corp has reported visible gold in beach-sand samples collected from multiple locations spanning about 50 kilometres of Ghana’s western coastline, as the company steps up its search for offshore mineral deposits.

GoldCoast Resource found visible gold in beach-sand samples along 50km of Ghana’s western coast.The company holds 10 offshore licences covering about 10,000 sq km of Ghana’s continental shelf.It will conduct detailed seabed surveys and drilling to determine whether gold deposits are commercially viable.The findings are preliminary, with no offshore mineral resource or reserve established yet.

The samples were collected between March and May 2026 during a preliminary programme covering approximately 75 kilometres of coastline, from Esiama to Akwidaa.

In an exploration update released on Tuesday, 18 August, the company said one five-litre sample contained as many as 13 visible gold grains.

However, GoldCoast cautioned that the presence of visible gold in individual samples does not establish an average grade or prove that the material can be mined commercially.

The samples were collected from coastal areas bordering the company’s offshore licence area, rather than from a confirmed offshore gold deposit.

GoldCoast’s update comes days after its shares began trading on the Canadian Securities Exchange under the symbol GCR on 10 August.

The company, which is chaired by veteran Ghanaian mining executive Sir Sam Jonah, is attempting to establish whether gold-bearing sediments carried by Ghana’s major rivers accumulated in commercially viable quantities along the country’s shallow continental shelf.

Sir Sam previously led Ashanti Goldfields and later served as executive president of AngloGold Ashanti.

Survey covers 10,000 square kilometres

GoldCoast says it holds 10 adjoining offshore reconnaissance licences covering approximately 10,000 square kilometres along Ghana’s western continental shelf.

The licence area stretches for around 300 kilometres, from Half Assini towards Winneba, and extends as far as 33 kilometres offshore.

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According to the company, the area represents roughly 53 per cent of Ghana’s offshore coastline.

A reconnaissance licence is the earliest stage of Ghana’s mineral licensing system. It allows regional exploration but does not permit commercial mining.

The Ghana Minerals Commission says such licences are generally valid for 12 months and may be renewed. A company must obtain further approvals, including a prospecting licence and eventually a mining lease, before it can undertake commercial extraction.

GoldCoast said it had now collected approximately 50,000 line kilometres of airborne magnetic data at intervals of 400 metres, covering its entire licensed area.

The survey used an aircraft flying at an altitude of about 50 metres to search for magnetic anomalies associated with heavy minerals, including rutile, ilmenite, magnetite and zircon.

These minerals can occur in the same sediment traps and old river channels where gold may have accumulated.

The company said its preliminary analysis identified multiple targets in one section of the licence.

It has consequently begun a more detailed survey over a 500-square-kilometre area around the mouth of the Ankobra River, known as Target A. The aircraft will fly over the area at intervals of 50 metres, compared with the initial spacing of 400 metres.

The final interpretation of the magnetic data is expected in the fourth quarter of 2026.

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Search will move from aircraft to the seabed

The next stage of the programme is expected to involve vessels conducting bathymetric, magnetic and seismic surveys.

The company’s offshore reconnaissance area covers about 10,000 square kilometres and extends approximately 33 kilometres out to sea.[Gemini Generated Image]

These surveys would help the company produce a three-dimensional picture of the seabed and identify ancient river channels, submerged beaches and other formations where heavy mineral sediments may have collected.

If suitable targets are identified, GoldCoast plans to proceed to vibro-core drilling and bulk sampling from the seabed.

Those stages will be critical because the existing coastal samples merely confirm that gold is present in parts of the surrounding sediment system. They do not show how much gold may exist offshore or whether it is sufficiently concentrated for profitable extraction.

GoldCoast said it had raised approximately $7.8 million (C$10.7 million) from its founders, institutional investors and wealthy private investors to finance its listing and exploration work.

This included a C$9.07 million private placement completed in April.

Historical results remain unverified

The company also cited sampling reportedly undertaken around the Ankobra River and the neighbouring continental shelf by Marine Mining Corp in 2010.

According to GoldCoast, 30 historical samples returned an average of 0.44 grams of gold per cubic metre. Individual results reportedly ranged from 0.019 grams to 1.862 grams per cubic metre.

But GoldCoast said it had not independently verified the historical sampling methods, quality controls or estimates.

The historical work was not conducted on the company’s behalf and cannot be treated as a current mineral resource or reserve.

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Its latest disclosure was reviewed by Samuel Torkornoo, an independent qualified person under Canada’s National Instrument 43-101 mining-disclosure rules.

Nevertheless, GoldCoast acknowledged that no mineral resource or reserve has been estimated within its licensed area. It has also not completed a preliminary economic assessment, pre-feasibility study or feasibility study.

There is therefore no certainty that the exploration will produce an economically viable mine.

Gold remains central to Ghana’s economy

The offshore exploration comes as Ghana attempts to extract more economic value from its position as Africa’s largest gold producer.

The country produced a record 5.94 million ounces in 2025, according to figures released by the Ghana Chamber of Mines. That represented an increase of more than 23 per cent from 4.82 million ounces in 2024.

Ghana’s gold export earnings also reached approximately $20 billion in 2025, almost twice the $10.3 billion recorded one year earlier, according to Bank of Ghana data cited by the Ghana Gold Board.

Most of the country’s established mines are situated on land. The possibility of offshore deposits would open an entirely different exploration frontier, but it would also invite questions about marine ecosystems, fishing communities and Ghana’s ability to regulate seabed mining.

For now, GoldCoast has evidence of visible gold in coastal samples and geophysical targets beneath the sea. It does not yet have evidence of a commercially recoverable offshore gold deposit.