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Other current and non-current non-financial assets (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of other non-financial assets [Line Items] |  |
Other current non-financial assets | $ 69,870 | $ 57,399
Other non-current non-financial assets | 33,487 | 22,042
Domestic Value Added Tax [Member] |  |
Disclosure of other non-financial assets [Line Items] |  |
Other current non-financial assets | 26,356 | 18,107
Foreign Value Added Tax [Member] |  |
Disclosure of other non-financial assets [Line Items] |  |
Other current non-financial assets | 14,395 | 7,785
Prepaid mining licenses [Member] |  |
Disclosure of other non-financial assets [Line Items] |  |
Other current non-financial assets | 1,233 | 1,025
Prepaid insurance [Member] |  |
Disclosure of other non-financial assets [Line Items] |  |
Other current non-financial assets | 20,443 | 10,307
Other prepayment [Member] |  |
Disclosure of other non-financial assets [Line Items] |  |
Other current non-financial assets | 659 | 946
Refund of Value Added Tax to exporters [Member] |  |
Disclosure of other non-financial assets [Line Items] |  |
Other current non-financial assets | 0 | 14,316
Other taxes [Member] |  |
Disclosure of other non-financial assets [Line Items] |  |
Other current non-financial assets | 6,030 | 4,499
Other assets [Member] |  |
Disclosure of other non-financial assets [Line Items] |  |
Other current non-financial assets | 754 | 414
Other non-current non-financial assets | 6,113 | 3,428
Exploration and evaluation expenses [Member] |  |
Disclosure of other non-financial assets [Line Items] |  |
Other non-current non-financial assets | 26,752 | 17,883
Guarantee deposits [Member] |  |
Disclosure of other non-financial assets [Line Items] |  |
Other non-current non-financial assets | $ 622 | $ 731

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- Definition The amount of current non-financial assets that the entity does not separately disclose in the same statement or note. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of non-current non-financial assets that the entity does not separately disclose in the same statement or note. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard -URIDate 2021-03-24 + Details
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