Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 438

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 438
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 This in situ material has the potential to produce marketable product (61% pellets and 39% concentrate for sale at a natural moisture content of 2%) comprising 39 million tonnes at 65% iron 2.7% silica (Measured), 210 million tonnes at 65% iron 2.7% silica (Indicated) and 123 million tonnes at 65% iron 2.7% silica (Inferred) using process recovery factors derived from current IOC concentrating and pellet operations. LOI is not determined for resource drilling samples, so no estimate of %LOI is available for Mineral Resources.

| Annual Report on Form 20-F 2024 | 293 | riotinto.com |

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

| Total Measured and Indicated MineralResources as at 31 December 2024 |       |        |         |      |       | Inferred Mineral Resourcesas at 31 December 2024 |       |        |         |      |       | Rio Tintointerest% |
| Tonnage                                                              | Grade |        |         |      |       |                                          Tonnage | Grade |        |         |      |       |                    |
| Mt                                                                   |  % Fe | % SiO2 | % Al2O3 |  % P | % LOI |                                               Mt |  % Fe | % SiO2 | % Al2O3 |  % P | % LOI |                    |
| –                                                                    |     – |      – |       – |    – |     – |                                              532 |  57.9 |    4.8 |     3.9 | 0.17 |   7.6 |              100.0 |
| 1,157                                                                |  62.5 |    3.3 |     1.8 | 0.13 |   4.9 |                                            4,271 |  62.3 |    3.2 |     1.9 | 0.13 |   5.3 |               75.1 |
| 541                                                                  |  56.8 |    6.3 |     4.1 | 0.15 |   7.2 |                                            1,670 |  56.8 |    5.9 |     4.2 | 0.16 |   7.8 |