| Property, plant and equipment (PPE) | 2,538.67a | 2,860.92a |
| Equity instruments at FVOCI | 139.97a | 107.99a |
| Silverstream contract | 214.44a | 446.54a |
| Deferred tax asset | 466.73a | 665.3a |
| Inventories | 69.76a | 69.76a |
| Other receivables | 5.26a | 43.53a |
| Other assets | 3.1a | 4.55a |
| Assets | — | — |
| Non-current assets | 3,437.93a | 4,198.59a |
| Inventories | 412.42a | 462.97a |
| Trade and other receivables | 674.21a | 419.67a |
| Prepayments | 13.88a | 23.18a |
| Income tax recoverable | 0a | 62.74a |
| Derivative financial instruments | 0a | 0.08a |
| Silverstream contract | 44.2a | 35.8a |
| Short-term investments | 187.4a | 0a |
| Cash and cash equivalents | 1,110.41a | 534.58a |
| Current assets | 2,442.53a | 1,539.02a |
| Total assets | 5,880.46a | 5,737.61a |
| Share capital | 368.55a | 368.55a |
| Share premium | 1,153.82a | 1,153.82a |
| Capital reserve | -526.91a | -526.91a |
| Hedging reserve | -0.09a | 0.05a |
| Fair value reserve of financial assets at FVOCI | 66.59a | 42.59a |
| Foreign currency translation reserve | -7.57a | -4.2a |
| Retained earnings | 2,800.96a | 2,737.96a |
| Capital and reserves attributable to shareholders of the Company | 3,855.34a | 3,771.85a |
| Non-controlling interests | 355.03a | 295.35a |
| Total equity | 4,210.37a | 4,067.2a |
| Equity and liabilities | — | — |
| Non-current liabilities | 1,301.5a | 1,298.39a |
| Interest-bearing loans | 839.51a | 839a |
| Notes payable | 0a | 22.73a |
| Lease liabilities | 7.58a | 9.78a |
| Provision for mine closure cost | 233.75a | 280.47a |
| Pensions and other post-employment benefit plans | 11.45a | 13.21a |
| Deferred tax liability | 209.21a | 133.2a |
| Current liabilities | 368.59a | 372.02a |
| Trade and other payables | 223.78a | 258.11a |
| Notes payable | 2.06a | 72.63a |
| Income tax payable | 113.22a | 21.78a |
| Derivative financial instruments | 0.19a | 0a |
| Lease liabilities | 4.31a | 4.81a |
| Provision for mine closure cost | 11.78a | 11.85a |
| Employee profit sharing | 13.25a | 2.84a |
| Total liabilities | 1,670.09a | 1,670.41a |
| Total equity and liabilities | 5,880.46a | 5,737.61a |