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IRON OREFEASIBILITY STUDYPROJECT ECONOMICS

Simfer Iron Ore Project - Ouéléba and Pic de Fon (Simandou South, Blocks 3 & 4) Feasibility Study: $4.40B NPV, $4.60B Capex

ByMining Stocks Research
Sep 19, 2026
Source:Rio Tinto
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Rio Tinto's Simfer Iron Ore Project - Ouéléba and Pic de Fon (Simandou South, Blocks 3 & 4) in Guinea, Simandou Range, approximately 550 km southeast of Conakry has a Feasibility Study outlining an after-tax NPV of $4.40B and initial capital of $4.60B.

Rio Tinto's Simfer Iron Ore Project - Ouéléba and Pic de Fon (Simandou South, Blocks 3 & 4) has reported Feasibility Study results for the iron ore project in Guinea, Simandou Range, approximately 550 km southeast of Conakry. The study headlines an after-tax net present value of $4.40B at a 8% discount rate. It reflects Rio Tinto's (RIO) latest disclosed economics for the asset.

Economics. The after-tax NPV is $4.40B using a 8% discount rate. Initial capital expenditure is estimated at $4.60B, with life-of-mine sustaining capital of $700M. Economics are based on Mineral Resources/Reserves valuations based on specific product pricing determined from a 65% Fe Fines price of US c 136.10/dmtu CFR China (average of forecasts from CRU and Wood Mackenzie).

Production and mine plan. The project envisions an open-pit operation. Average annual production is approximately 60 Mtpa iron ore fines (dry).

Resources and ownership. The company holds a 45.05% interest in the project.

These figures are extracted from Rio Tinto's technical disclosures and reflect the most recent Feasibility Study on file. Compare this project against other developers and producers in our project economics database, and always verify the numbers against the original technical report before making any investment decision.

Reserves & Resources

Mineral Reserves (P&P)
CategoryTonnageGradeContained
Proven123 Mt66.4% Fe, 1.0% SiO2, 1.2% Al2O3, 0.07% P, 2.5% LOI
Probable552 Mt65.0% Fe, 0.9% SiO2, 1.8% Al2O3, 0.10% P, 3.9% LOI
Total675 Mt65.3% Fe, 0.9% SiO2, 1.7% Al2O3, 0.09% P, 3.6% LOI
Mineral Resources (M&I&I)
CategoryTonnageGradeContained
Measured66 Mt67.1% Fe, 1.9% SiO2, 1.1% Al2O3, 0.04% P, 1.0% LOI
Indicated198 Mt66.2% Fe, 1.8% SiO2, 1.5% Al2O3, 0.05% P, 1.8% LOI
Measured & Indicated264 Mt66.5% Fe, 1.8% SiO2, 1.4% Al2O3, 0.05% P, 1.6% LOI
Inferred340 Mt65.8% Fe, 1.4% SiO2, 1.4% Al2O3, 0.07% P, 2.8% LOI
Mining Stocks Research

Our Analysis

NPV after-tax
$4.40B

higher than 96% of 462 projects we track

Initial capex
$4.60B

105% of NPV

costlier than 97% of 460 projects we track

Study price assumption
Mineral Resources/Reserves valuations based on specific product pricing determined from a 65% Fe Fines price of US c 136.10/dmtu CFR China (average of forecasts from CRU and Wood Mackenzie)

The after-tax NPV of $4.40B ranks higher than 96% of the 462 projects we track across all commodities. Its after-tax NPV is well below the company's market capitalisation, a modest slice of the company's value, as you'd expect for one asset in a larger portfolio. Capital runs to about 105% of project NPV, making it capital-intensive, lower than 3% of the 460 projects we track across all commodities. It is one of 30 projects we track for this company, a diversified portfolio, a large-cap developer. The project sits in Guinea, Simandou Range, approximately 550 km southeast of Conakry, a factor in its overall risk profile.

Our take, benchmarked against the project economics in the Mining Stocks database. Figures are estimates drawn from company technical reports — not investment advice; always verify against the source filing.

View the source filing from
Rio Tinto
View Source Filing (PDF) →
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