Ask which South African mine is the richest and you get a definitional problem before you get an answer. Richest by revenue, by profit, by what is still in the ground? Each measure produces a different list. This ranking uses value generated in the 2025 financial year, from published company results, and notes where the other measures would reorder it. One theme runs through everything: at 2025-26 metal prices, the gap between a rich mine and a struggling one is mostly the commodity it happens to sit on.
Which is South Africa’s richest mine?
By revenue generated, Sishen. Kumba Iron Ore’s flagship produced 25.3 million tonnes in 2025, roughly 70 percent of Kumba’s R70 billion revenue year at a 46 percent EBITDA margin. No other single South African mine publishes numbers that come close. By orebody value still in the ground, the answer changes entirely.
The top tier, ranked by 2025 value generated
South Africa’s mines divide into a clear top tier. Sishen (Kumba, iron ore) leads on revenue. Kumba realised 95 dollars a tonne against an 85 dollar benchmark because its ore runs at about 64 percent iron, and that grade premium is worth billions a year. Mogalakwena (Valterra Platinum, PGMs) is the profit machine: the world’s largest open-pit platinum mine produced about 948,000 PGM ounces in 2025 and generated R5 billion of EBITDA in the first half alone. Valterra’s group EBITDA rose 68 percent to R33.4 billion on the PGM price recovery. Impala Rustenburg is the volume king, the largest single PGM complex in the country at 1.28 million ounces a year. Marikana (Sibanye-Stillwater) anchors a South African PGM segment whose EBITDA more than doubled to R16.7 billion in 2025. Mponeng (Harmony) and South Deep (Gold Fields) each earn roughly a billion dollars a year at current gold prices, and Grootegeluk (Exxaro) quietly feeds two power stations from one pit inside a R41.8 billion revenue business.
What actually makes a mine rich?
Three different things, and the top tier illustrates all of them. Grade: Mponeng mined at 11.27 grams per tonne in its 2025 year, roughly double a typical underground gold grade, which is the only reason mining at 4 kilometres deep pays. Scale: Sishen and Grootegeluk are money machines because volume crushes unit costs, not because the rock is special. Price: Sibanye’s gold operations produced 11 percent less gold in 2025 and still more than doubled their EBITDA, because the average received price hit 3,379 dollars an ounce. Grade and scale are engineering. Price is luck, and it cuts both ways.
The richest orebody earning nothing
Venetia holds one of the most valuable diamond resources on earth, carries a 2.3 billion dollar underground project designed to run into the 2040s, and produced 2.23 million carats in 2025, more than 40 percent of national output. In July 2026 De Beers paused it for two years anyway. The mine’s realised price of 66 dollars a carat sat below its 110 dollar unit cost, and no reserve value survives that arithmetic. The full story is in our Venetia on pause analysis, and the market backdrop in diamond mining in Africa today.
Who owns the richest mines?
Almost all of them answer to JSE-listed groups, but the map shifted in 2025. Mogalakwena now belongs to Valterra Platinum, demerged from Anglo American in May 2025 and listed in its own right. Kumba stays roughly 70 percent Anglo-held while Anglo merges with Teck. Harmony bought Mponeng from AngloGold Ashanti in 2020 for 200 million dollars plus deferred payments, one of the great bargains of the decade at today’s gold price. Palabora, the country’s only refined copper producer, has been Chinese-controlled since 2013. Ownership details for every operation sit on our mining companies in South Africa page.
What this means for suppliers
Rich mines spend, and they spend on different things. The iron ore and coal giants buy fleet, plant availability and rail-linked logistics. The deep gold and PGM shafts buy cooling, hoisting, labour productivity and life-extension projects like Sibanye’s R4.4 billion K4. Following the value, not just the tonnage, tells you whose procurement budget is growing. AMIQ tracks 2,200+ African mining projects with verified owner and engineer contacts, every mine in this ranking included. Join at AMIQ, or start from the list of South African mines.
Frequently asked questions
How many mines are there in South Africa?
Several hundred. The Minerals Council counts around 800 operating mines and quarries, while the mines department’s 2025 directory lists the formally registered operations. The industry employed 470,457 people in 2025 and generated R816 billion in mineral exports.
What is the deepest mine in South Africa?
Mponeng, at about 4 kilometres below surface, which also makes it the deepest mine in the world. Harmony began a deepening project in 2025 that will take it further still and extend its life by up to two decades.
Which mine produces the most gold in South Africa?
South Deep produced 309,000 ounces in 2025, up 16 percent, and holds the country’s largest gold reserve. Mponeng produced about 333,000 ounces in its June 2025 financial year at a far higher grade, so the answer depends on which year-end you use.
Who owns South Africa’s richest mines?
Mostly listed companies: Valterra Platinum, Kumba Iron Ore, Impala Platinum, Sibanye-Stillwater, Harmony, Gold Fields and Exxaro. De Beers owns Venetia, currently paused, and a Chinese consortium has owned Palabora since 2013.
