Exploration properties (Details) $ in Thousands |
6 Months Ended |
|---|---|
|
Jun. 30, 2026
USD ($)
| |
| Mineral Interests Exploration [Roll Forward] | |
| Balance at December 31, 2025 | $ 224,145 |
| Acquisition costs | 7,478 |
| Divestment (Note 13) | (13,607) |
| Balance at June 30, 2026 | 218,016 |
| Santa Cruz | |
| Mineral Interests Exploration [Roll Forward] | |
| Balance at December 31, 2025 | 177,523 |
| Acquisition costs | 0 |
| Divestment (Note 13) | 0 |
| Balance at June 30, 2026 | 177,523 |
| Tintic | |
| Mineral Interests Exploration [Roll Forward] | |
| Balance at December 31, 2025 | 30,703 |
| Acquisition costs | 0 |
| Divestment (Note 13) | 0 |
| Balance at June 30, 2026 | 30,703 |
| Alacrán | |
| Mineral Interests Exploration [Roll Forward] | |
| Balance at December 31, 2025 | 13,607 |
| Acquisition costs | 0 |
| Divestment (Note 13) | (13,607) |
| Balance at June 30, 2026 | 0 |
| Other | |
| Mineral Interests Exploration [Roll Forward] | |
| Balance at December 31, 2025 | 2,312 |
| Acquisition costs | 7,478 |
| Divestment (Note 13) | 0 |
| Balance at June 30, 2026 | $ 9,790 |