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Subsequent events (Details) - Asset acquisition subsequent to year-end $ in Millions | Feb. 21, 2019 USD ($) | Jan. 31, 2019 USD ($) | Feb. 21, 2019 CAD ($)
--- | --- | --- | ---
Salares Norte Royalty Interest |  |  |
Subsequent events |  |  |
Percentage of NSR |  | 2.00% |
Total consideration transferred, acquisition-date fair value |  | $ 32,000,000 |
Value of common shares issued in acquisition |  | $ 27,000,000 |
Number of common shares issued in acquisition (in share) |  | 366,499 |
Cash transferred |  | $ 5,000,000 |
Option to buy back of NSR (as a percent) |  | 1.00% |
Value of option to buy back of NSR |  | $ 6,000,000 |
Period to buy back of NSR |  | 24 months |
Valentine Lake Royalty Interest |  |  |
Subsequent events |  |  |
Percentage of NSR | 2.00% |  |
Total consideration transferred, acquisition-date fair value |  |  | $ 18.0
Option to buy back of NSR (as a percent) |  |  | 0.50%
Value of option to buy back of NSR | $ 7,000,000 |  |

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- Definition Represents the value of ownership with option to buy back by seller. + References No definition available. + Details
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- Definition The percentage of NSR. + References No definition available. + Details
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- Definition The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2018-01-01 -Paragraph B64 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2018-03-01&anchor=para_B64_f&doctype=Appendix&seq=2 -URIDate 2018-03-16 + Details
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- Definition The fair value, at acquisition date, of cash transferred as consideration in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2018-01-01 -Paragraph B64 -Subparagraph f -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2018-03-01&anchor=para_B64_f_i&doctype=Appendix&seq=2 -URIDate 2018-03-16 + Details
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- Definition The fair value, at the acquisition date, of equity interests of the acquirer transferred as consideration in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2018-01-01 -Paragraph B64 -Subparagraph f -Clause iv -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2018-03-01&anchor=para_B64_f_iv&doctype=Appendix&seq=2 -URIDate 2018-03-16 + Details
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