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Commitments (Tables) | 12 Months Ended
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Dec. 31, 2019
Commitments [Abstract] |
Disclosure of detailed information about significant commitments for streams and offtakes [Table Text Block] |
| Attributable payable production to be purchased | Per ounce/carat cash payment (US$) | Term of agreement | Date of contract
Interest | Gold | Silver | Diamond | Gold | Silver | Diamond
Amulsar stream(1),(8) | 4.22% | 62.5% |  | $400 | $4 |  | 40 years | November 2015
Amulsar offtake(2),(8) | 81.91% |  |  | Based on quotational period |  |  | Until delivery of 2,110,425 ounces Au | November 2015
Back Forty stream | 18.5%(3) | 75% |  | 30% spot price (max $600) | $4 |  | Life of mine | March 2015
Mantos Blancos stream(4) |  | 100% |  |  | 8% spot |  | Life of mine | September 2015 Amended Aug. 2019
Renard stream(5) |  |  | 9.6% |  |  | Lesser of 40% of sales price or $40 | 40 years | July 2014 Amended Oct. 2018
Sasa stream(6) |  | 100% |  |  | $5 |  | 40 years | November 2015
Gibraltar stream(7) |  | 75% |  |  | $2.75 |  | Life of mine | March 2018
Disclosure of detailed information about significant commitments related to the acquisition of royalties and streams [Table Text Block] |
Company | Project (asset) | Installments | Triggering events
Aquila Resources Inc. | Back Forty project | US$10.0 million | Positive construction decision.
| (gold stream) | US$30.0 million | First drawdown on debt finance facility.
Falco Resources Ltd. | Horne 5 project (silver stream) | $20.0 million | Receipt of all necessary material third-party approvals, licenses, rights of way and surface rights on the property.
|  | $35.0 million | Receipt of all material construction permits, positive construction decision, and raising a minimum of $100.0 million in non-debt financing.
|  | $60.0 million | Upon total projected capital expenditure having been demonstrated to be financed.
|  | $40.0 million (optional) | Payable with fourth installment, at sole election of Osisko, to increase the silver stream to 100% of payable silver (from 90%).

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