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Significant accounting policies - Summary of Wholly-Owned and Partially-Owned Subsidiaries (Details) | 12 Months Ended
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Dec. 31, 2019
Turkey | Tüprag Metal Madencilik Sanayi ve Ticaret AS (Tüprag) |
Disclosure of subsidiaries [line items] |
Subsidiary | Tüprag Metal Madencilik Sanayi ve Ticaret AS ("Tüprag")
Location | Turkey
Ownership interest | 100.00%
Status | Kişladağ Mine Efemçukuru Mine
Greece | Hellas |
Disclosure of subsidiaries [line items] |
Subsidiary | Hellas Gold SA ("Hellas")
Location | Greece
Ownership interest | 95.00%
Status | Olympias Mine Stratoni Mine Skouries Project
Greece | Thracean Gold Mining SA |
Disclosure of subsidiaries [line items] |
Subsidiary | Thracean Gold Mining SA
Location | Greece
Ownership interest | 100.00%
Status | Perama Hill Project
Greece | Thrace Minerals SA |
Disclosure of subsidiaries [line items] |
Subsidiary | Thrace Minerals SA
Location | Greece
Ownership interest | 100.00%
Status | Sapes Project
Canada | Integra Gold Corporation |
Disclosure of subsidiaries [line items] |
Subsidiary | Integra Gold Corporation
Location | Canada
Ownership interest | 100.00%
Status | Lamaque Mine
Brazil | Unamgen Mineração e Metalurgia SA |
Disclosure of subsidiaries [line items] |
Subsidiary | Unamgen Mineração e Metalurgia SA
Location | Brazil
Ownership interest | 100.00%
Status | Vila Nova Iron Ore Mine
Brazil | Brazauro Recursos Minerais SA (Brazauro) |
Disclosure of subsidiaries [line items] |
Subsidiary | Brazauro Recursos Minerais SA ("Brazauro")
Location | Brazil
Ownership interest | 100.00%
Status | Tocantinzinho Project
Romania | Deva |
Disclosure of subsidiaries [line items] |
Subsidiary | Deva Gold SA ("Deva")
Location | Romania
Ownership interest | 80.50%
Status | Certej Project

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