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Investments in associates and joint venture - Statements of profit or loss of Tinka under IFRS (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of Investments in associates [Line Items] |  |  |
Sales of goods | $ 801,199 | $ 863,470 | $ 637,619
Net loss | 602,935 | (262,804) | (150,339)
Share in results | 176,270 | 240,450 | 62,702
Tinka resources Ltd |  |  |
Disclosure of Investments in associates [Line Items] |  |  |
Sales of goods | 0 | 0 | 0
Net loss | (4,383) | (1,109) | (2,311)
Adjustments to conform to the accounting policies | (8,283) | (4,583) | (2,189)
Net loss, adjusted | (12,666) | (5,692) | (4,500)
Share in results | (2,447) | (1,098) | $ (868)
Total market capitalization of shares | $ 11,000 | $ 11,000 |
Market capitalization value by each share | $ 0.14 | $ 0.16 |

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