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Acquisition of the San Antonio gold project (Narrative) (Details) - San Antonio gold project [Member] $ in Thousands, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 CAD ($) shares | Dec. 31, 2020 USD ($) shares
Disclosure of detailed information about business combination [line items] |  |
Total purchase price | $ 68,054 | $ 42.0
Cash paid | 40,015 | 30.0
Issuance of common shares | $ 15,846 | $ 12.0
Number of shares issued | 1,011,374 | 1,011,374
Osisko's transaction costs | $ 5,865 |

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