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The prices that set the value of the subsoil
Iron ore, aluminium, gold, exchange rate: the prices that determine the value of Guinea's exports — live and over 3 years, crossed with the MMG's official 2025 sale prices.
Live market prices● Official 2025 prices (MMG)Updated 31 Oct 2026
Contents
Numbered sections — jump in or read in order
01 The market today
USD 104.45/t
Iron ore 62% (Mar 2026)
IndexMundi
USD 3,372.95/t
Aluminium (Mar 2026)
IndexMundi
USD 4,855.54/oz
Gold (Mar 2026)
IndexMundi
GNF 8,842.53
USD 1 (31 Oct 2026)
open.er-api · BCRG fixing 30/12/2025: 8,717.32
02 Official 2025 prices (MMG)
- Bauxite: average sale price USD 30.72/t (CBG 39.59 · SMB 32.50 · Ashapura Boffa 21.77).
- Gold: average sale price USD 2,905.80/oz (SAG 3,418 · SMD 706).
- The reference price: the MMG applies an official reference price for Guinean bauxite, bringing operators closer to international levels.
03 Charts — 3 years of prices
Gold — USD/ounce
IndexMundi — Apr 2023 → Mar 2026. Dashed: official 2025 price (MMG)
Iron ore 62% — USD/tonne
IndexMundi — Apr 2023 → Mar 2026
Aluminium — USD/tonne
IndexMundi — Apr 2023 → Mar 2026
04 Estimating revenues
The public formula used to estimate a deposit's revenue: revenue ≈ production × reference price × royalty rate (code minier rates). Bauxite example: 175.45 Mt × USD 30.72/t ≈ USD 5.4bn of exported value in 2025 — of which ~USD 508m paid back in mining taxes.
The exact royalty rates by commodity (revised mining code) are being verified — a documented missing link on the Method page.