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Exploration and evaluation | 12 Months Ended
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Dec. 31, 2021
Disclosure of Exploration and evaluation assets [Abstract] |
Exploration and evaluation [Text Block] | 16. Exploration and evaluation
|  | 2021 |  |  | 2020 |
|  | $ |  |  | $ |
Net book value - January 1 |  | 42,519 |  |  | 42,949 |
Additions |  | 3,784 |  |  | 201 |
Impairment |  | (42,668 | ) |  | - |
Transfer to royalty, stream and other interests |  | - |  |  | (631 | )
Net book value - December 31 |  | 3,635 |  |  | 42,519 |
Closing balance |  |  |  |  |  |
Cost |  | 104,492 |  |  | 100,708 |
Accumulated impairments |  | (100,857 | ) |  | (58,189 | )
Net book value |  | 3,635 |  |  | 42,519 |
Impairment In 2021, the Company incurred an impairment charge of $42.7 million ($34.6 million, net of income taxes) on exploration and evaluation properties, including the James Bay properties and the Coulon zinc project in Canada. The Company has determined that further exploration and evaluation expenditures are no longer planned in the near term on these properties and that the carrying amount of these assets is unlikely to be recovered from a sale of these properties at the current time. As a result, these properties were written down to zero on December 31, 2021.

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- Definition The entire disclosure for exploration and evaluation assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 6 -IssueDate 2021-01-01 -Section Disclosure -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=6&code=ifrs-tx-2021-en-r&doctype=Standard&dita_xref=IFRS06_g23-25_TI -URIDate 2021-03-24 + Details
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