One of the largest gold deposits of the century yields more than 100 tons

Mon Jan 05 2026

A new gold discovery in northeastern Ivory Coast is putting the little-known town of Doropo on the mining map.

The deposit is estimated to contain over 100 tons of gold, about 3.2 million troy ounces, but numbers are still speculative.

The work was led by Ziandjêdé Hervé Siagné, a geoscientist, at the University of Rennes. His research focuses on using airborne measurements and satellite images to pinpoint gold-bearing structures hidden beneath northern Ivory Coast.

Resolute Mining plans to start building the Doropo mine in early 2026, with construction expected to last about two years before production starts.

The project carries an investment of about 300 billion CFA francs, roughly 500 million dollars, and is expected to operate for two decades.

When it reaches full speed, Doropo could produce well over 200,000 ounces of gold a year, making Ivory Coast a more influential producer.

Doropo gold mine mapping

Scientists describe Doropo as sitting within a greenstone belt, a zone of ancient volcanic and sedimentary rocks rich in gold in West Africa.

Recent work on the region combined airborne gamma-ray spectrometry, a technique measuring radiation from rocks, with satellite imagery.

That integrated approach identified several new fractures and faults, many of which align closely with the cluster of deposits being prepared for mining.

Those findings help explain why the Doropo concessions, once seen as remote farmland, are now drawing sustained interest from exploration teams.

Geologists estimate that West Africa’s gold fields contain thousands of metric tons of metal, making the region one of the world’s major producers.

Within Ivory Coast, Doropo joins large projects like Koné and Tanda, each with resources of around one hundred metric tons or more.

Even in that company, a single site with more than 100 metric tons of gold puts Doropo among deposits that experts call world class.

For a country that produced only a few dozen tons a year until recently, adding one multi-decade mine of this scale is significant.

Ivory Coast’s gold boom

Figures show that gold output in Ivory Coast rose from 24 tons in 2015 to 51 tons in 2023. Authorities now estimate national geological potential at roughly 600 metric tons of gold, spread across several regions that already host industrial mines.

Future production will come from pits such as Lafigué and Koné, pushing the country toward a target of 100 metric tons a year.

In that context, Doropo is not an isolated find but part of an industrial strategy to diversify revenue beyond cocoa and other crops.

Government projections suggest the new mine could directly employ around 3,000 workers and support another 10,000 jobs in services and supply chains.

Those positions will not replace every informal livelihood, but they could change opportunities in Bounkani, the country’s poorest administrative region by income.

Large-scale mining typically brings paved roads, power lines, and new buildings, and Doropo’s leaders are already advocating for a hospital and schools.

Tax receipts from the mine are expected to reach billions of CFA francs over its life, giving Abidjan more resources to invest nationally.

Doropo gold mine security

Doropo lies less than ten miles from the border with Burkina Faso, where armed groups and trafficking networks have destabilized communities for years.

Security researchers report that groups have infiltrated illegal mining sites along Ivory Coast’s northern frontier, using them to raise cash and recruit fighters.

Officials hope that a managed mine will provide employment and state presence in the area, making it harder for armed groups to operate.

Local leaders still warn that any perception of exclusion from jobs or land decisions could inflame tensions in an already fragile setting.

Land and water resources

A mine complex tapping several open pits requires access roads, waste dumps, and processing facilities that compete for land with farmers and herders.

Environmental studies for Doropo emphasize protecting nearby streams and groundwater, since gold processing uses large volumes of water and potentially hazardous reagents.

Researchers have documented cases across West Africa where poorly regulated mining has led to deforestation, sediment-choked rivers, and the loss of productive farmland.

Communities around Doropo are pushing for monitoring committees and clear complaint channels so they can react early if pollution or land disputes arise.

Artisanal gold miners

Before industrial companies arrived, the region hosted artisanal mining, small-scale operations using simple tools. Families used the income from this when crops failed.

A recent analysis of Ivory Coast’s mining sector finds governments prioritizing concessions and treating small-scale miners as a problem to control.

Some artisanal miners find themselves pushed off sites or restricted by security forces, even as they watch machinery arrive for industrial projects.

Finding room for formal operations and safer, better supported small-scale mining will influence whether local residents see Doropo as opportunity or threat.

More potential ahead

Centamin’s exploration work at Doropo, followed by Resolute’s drilling campaigns, has covered only part of the permit area tested by surveys.

The mineral resource estimate, a formal calculation of potential gold in the ground, gives companies a baseline for planning pits and plants.

“Doropo will be a high-quality, long-life mine,” said Chris Eger of Resolute Mining. It is estimated to contain 4.4 million ounces.

Exploration teams are testing targets on the property, especially where geophysical data hint at buried structures that resemble defined ore zones.

Balancing investors and risks

Economic geologists describe West Africa’s gold belts as among the world’s most productive Paleoproterozoic provinces.

That geological abundance helps explain why international investors pour large sums of money into mines like Doropo despite political and security risks.

From a community perspective, the same projects can disrupt land tenure systems and deepen friction between livelihood groups, including farmers, herders, and miners.

Regulators in Abidjan are under pressure to hold companies to strict environmental and social standards while keeping the country attractive for investment.

Doropo gold production by 2030

If forecasts hold, Ivory Coast could be producing 100 tons of gold a year by 2030, putting it among major African producers.

By then, Doropo should be in steady production, feeding ore from pits into a processing plant and exporting millions of ounces of metal.

Success or failure at the mine will influence how Ivorians judge mining policy, including whether promises of jobs, infrastructure, and safeguards match reality.

The decisions made in the years around Doropo will resonate beyond the project boundary, shaping how the country uses its underground wealth.

Source: https://www.earth.com/