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Other current and non-current non-financial assets (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure of other non-financial assets [Abstract] |
Disclosure of detailed information about other current and non-current non-financial assets [Text Block] | As of December 31, 2021, and 2020, the detail of “Other Current and Non-current Assets” is as follows:
Other non-financial assets, current |  | As of December 31, 2021 |  |  | As of December 31, 2020 |
|  | ThUS$ |  |  | ThUS$ |
Domestic Value Added Tax |  |  | 26,356 |  |  |  | 18,107 |
Foreign Value Added Tax |  |  | 14,395 |  |  |  | 7,785 |
Prepaid mining licenses |  |  | 1,233 |  |  |  | 1,025 |
Prepaid insurance |  |  | 20,443 |  |  |  | 10,307 |
Other prepayments |  |  | 659 |  |  |  | 946 |
Refund of Value Added Tax to exporters |  |  | - |  |  |  | 14,316 |
Other taxes |  |  | 6,030 |  |  |  | 4,499 |
Other assets |  |  | 754 |  |  |  | 414 |
Total |  |  | 69,870 |  |  |  | 57,399 |
Other non-financial assets, non-current |  | As of December 31, 2021 |  |  | As of December 31, 2020 |
|  | ThUS$ |  |  | ThUS$ |
Exploration and evaluation expenses (1) |  |  | 26,752 |  |  |  | 17,883 |
Guarantee deposits |  |  | 622 |  |  |  | 731 |
Other assets |  |  | 6,113 |  |  |  | 3,428 |
Total |  |  | 33,487 |  |  |  | 22,042 |
| (1) | Reconciliation of changes in assets for exploration and mineral resource evaluation, by type
Disclosure of reconciliation of changes in assets for exploration and mineral resource evaluation [Text Block] | Movements in assets for the exploration and evaluation of mineral resources as of December 31, 2021, and 2020:
Conciliation |  | As of December 31, 2021 |  |  | As of December 31, 2020 |  |  | As of December 31, 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Opening balance |  |  | 17,883 |  |  |  | 18,654 |  |  |  | 26,189 |
Change in assets for exploration and evaluation of mineral resources |  |  |  |  |  |  |  |  |  |  |  |
Additions |  |  | 8,071 |  |  |  | - |  |  |  | - |
Short term reclassifications |  |  | 83 |  |  |  | (526 | ) |  |  | (1,311 | )
Increase (decrease) due to transfers and other charges |  |  | 715 |  |  |  | (245 | ) |  |  | (6,224 | )
Total changes |  |  | 8,869 |  |  |  | (771 | ) |  |  | (7,535 | )
Total |  |  | 26,752 |  |  |  | 17,883 |  |  |  | 18,654 |
Disclosure of Disbursements for Exploration And Evaluation Explanatory |
Explorations in execution |  | As of December 31, 2021 |  |  | As of December 31, 2020 |
|  | ThUS$ |  |  | ThUS$ |
Chile |  |  | 12,915 |  |  |  | 14,265 |
Total |  |  | 12,915 |  |  |  | 14,265 |
Summary Of Detailed Information About Conciliation Of Explorations In Execution |
Reconciliation of explorations in execution |  | As of December 31, 2021 |  |  | As of December 31, 2020 |
|  | ThUS$ |  |  | ThUS$ |
Opening balance |  |  | 14,265 |  |  |  | 18,654 |
Disbursements |  |  | 11,964 |  |  |  | - |
Reclassifications |  |  | (13,314 | ) |  |  | (4,389 | )
Total changes |  |  | (1,350 | ) |  |  | (4,389 | )
Total |  |  | 12,915 |  |  |  | 14,265 |
Summary Of Detailed Information About Reimbursements For Exploration And Evaluation |
Economically feasible |  | Type of Exploration |  | As of December 31, 2021 |  |  | As of December 31, 2020 |
|  |  |  | ThUS$ |  |  | ThUS$ |
Chile (1) |  | Metallic/Non-Metallic |  |  | 18,154 |  |  |  | 10,872 |
Total |  |  |  |  | 18,154 |  |  |  | 10,872 |
(1) The value presented for Chile is as of December 2021 for ThUS 5,622, corresponding to non-metallic exploration and evaluation and ThUS$ 12,367 associated with metallic exploration. In December 2020, the amounts of non-metallic exploration were ThUS$ 6,576 and metallic exploration were ThUS$ 4,296 Economically feasible metallic exploration is classified as advanced exploration.
Summary Of Detailed Information About Reconciliation Of Economically Feasible Metalic Explorations | Economically feasible metallic explorations are those classified as advanced exploration.
Economically feasible |  | As of December 31, 2021 |  |  | As of December 31, 2020 |
|  | ThUS$ |  |  | ThUS$ |
Opening balance |  |  | 10,872 |  |  |  | 10,009 |
Additions |  |  | 8,071 |  |  |  | - |
Reclassifications from Exploration in execution – Chile |  |  | 1,906 |  |  |  | 863 |
Reclassifications to Exploration in Exploitation-Chile |  |  | (2,695 | ) |  |  | - |
Total changes |  |  | 7,282 |  |  |  | 863 |
Total |  |  | 18,154 |  |  |  | 10,872 |
Summary Of Detailed Information About Short Term And Long Term Exploitation Conciliation |
Short-Term Exploitation rec onciliation |  | As of December 31, 2021 |  |  | As of December 31, 2020 |
|  | ThUS$ |  |  | ThUS$ |
Opening balance |  |  | 1,318 |  |  |  | 1,367 |
Amortization |  |  | (1,359 | ) |  |  | (1,683 | )
Reclassifications |  |  | 1,276 |  |  |  | 1,634 |
Total changes |  |  | (83 | ) |  |  | (49 | )
Total |  |  | 1,235 |  |  |  | 1,318 |
Long -Term Exploitation conciliation |  | As of December 31, 2021 |  |  | As of December 31, 2020 |
|  | ThUS$ |  |  | ThUS$ |
Opening balance |  |  | 7,011 |  |  |  | 8,645 |
Amortization |  |  | - |  |  |  | - |
Reclassifications |  |  | 1,587 |  |  |  | (1,634 | )
Total changes |  |  | 1,587 |  |  |  | (1,634 | )
Total |  |  | 8,598 |  |  |  | 7,011 |

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