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MINERAL PROPERTY INTERESTS AND PLANT AND EQUIPMENT- Mineral Properties (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Mineral Property Interests |  |
Mineral property interests | $ 280,118 | $ 311,220
Black Fox Complex |  |
Mineral Property Interests |  |
Mineral property interests | 17,580 | 14,627
Lexam VG Gold |  |
Mineral Property Interests |  |
Mineral property interests | 41,595 | 41,595
Los Azules Copper Project |  |
Mineral Property Interests |  |
Mineral property interests | 191,490 | 191,490
Tonkin Properties |  |
Mineral Property Interests |  |
Mineral property interests | 4,833 | 4,833
Gold Bar mine |  |
Mineral Property Interests |  |
Mineral property interests | 14,675 | 48,492
Battle Mountain Complex |  |
Mineral Property Interests |  |
Mineral property interests | 785 | 785
El Gallo Project |  |
Mineral Property Interests |  |
Mineral property interests | 3,353 | 3,591
Fenix Project Properties |  |
Mineral Property Interests |  |
Mineral property interests | $ 5,807 | $ 5,807

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- Definition Mineral properties, net of adjustments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 25 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=96866604&loc=d3e64895-109465 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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