Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 437

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 437
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 Reserves, Mineral Resources and operations | Mineral Reserves

| Annual Report on Form 20-F 2024 | 286 | riotinto.com |

Production, Mineral Reserves, Mineral Resources and operations | Mineral Reserves

|                                                               | Type ofmine1 | Proven Mineral Reservesas at 31 December 2024 |          |       | Probable Mineral Reservesas at 31 December 2024 |          |     |
| Tonnage                                                       | Grade        |                                               |  Tonnage | Grade |                                                 |          |     |
| Titanium dioxide feedstock2 3                                 | Mt           |                                  % Timinerals | % Zircon |    Mt |                                    % Timinerals | % Zircon |     |
| QIT Madagascar Minerals (QMM) (Madagascar)                    | O/P          |                                           153 |      3.3 |   0.2 |                                              67 |      2.9 | 0.1 |
| Richards Bay Minerals (RBM) (South Africa)                    | O/P          |                                           315 |      1.5 |   0.2 |                                             542 |      3.0 | 0.4 |
| Rio Tinto Iron and Titanium (RTIT) Quebec Operations (Canada) | O/P          |                                             – |        – |     – |                                             143 |     82.8 |   – |
| Total titanium dioxide feedstock                              |              |                                           468 |      2.1 |   0.2 |                                             751 |     18.2 | 0.3 |

1. Type of mine: O/P = open pit/surface. 2. The marketable product (zircon at RBM and zirsil at QMM) is shown after all mining and processing losses. Titanium dioxide feedstock Mineral Reserves are reported as dry in situ tonnes. 3. QMM and RBM Mineral Reserves valuations are based on commodity prices of US$228.35/t for 53% titanium dioxide product and US$1,587.65/t for 66.5% zircon oxide, adjusted for specific products produced. RTIT Quebec Operations Mineral Reserves valuations are based on a commodity price of US$228.35/t for 53% titanium dioxide product, adjusted for specific products produced. These prices are sourced from TZMI.

| Annual Report on Form 20-F 2024 | 287 | riotinto