XML 53 R36.htm IDEA: XBRL DOCUMENT
v3.22.1

MINERAL PROPERTY INTERESTS AND PLANT AND EQUIPMENT (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
MINERAL PROPERTY INTERESTS AND PLANT AND EQUIPMENT |
Schedule of property and equipment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2021 |  | December 31, 2020
Mineral property interests, cost | ​ | $ | 344,529 | ​ | $ | 314,719
Less: accumulated depletion | ​ | ​ | (47,197) | ​ | ​ | (34,601)
Mineral property interests, carrying value | ​ | $ | 297,332 | ​ | $ | 280,118
​ | ​ | ​ | ​ | ​ | ​ | ​
Plant and equipment, cost | ​ | ​ | ​ | ​ | ​ | ​
Land | ​ | $ | 8,949 | ​ | $ | 8,804
Construction in progress | ​ | ​ | 4,078 | ​ | ​ | 2,945
Plant and equipment | ​ | ​ | 76,887 | ​ | ​ | 72,188
Subtotal | ​ | $ | 89,914 | ​ | $ | 83,937
Less: accumulated depreciation | ​ |  | (44,942) | ​ | ​ | (34,943)
Plant and equipment, carrying value | ​ | $ | 44,972 | ​ | $ | 48,994
​ | ​ | ​ | ​ | ​ | ​ | ​
Mineral property interests and plant and equipment, carrying value | ​ | $ | 342,303 | ​ | $ | 329,112
Summary of mineral property interests | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Name of Property/Complex |  | State/Province |  | Country |  | 2021 |  | 2020 |
Fox Complex | ​ | Ontario | ​ | Canada | ​ | $ | 37,678 | ​ | $ | 17,580 | ​
Lexam | ​ | Ontario | ​ | Canada | ​ | ​ | 41,595 | ​ | ​ | 41,595 | ​
Los Azules Copper Project |  | San Juan |  | Argentina | ​ | ​ | 191,490 | ​ | ​ | 191,490 | ​
Tonkin Properties |  | Nevada |  | United States | ​ |  | 4,833 | ​ |  | 4,833 | ​
Gold Bar Project |  | Nevada |  | United States | ​ |  | 11,790 | ​ |  | 14,675 | ​
Battle Mountain Complex |  | Nevada |  | United States | ​ |  | 785 | ​ |  | 785 | ​
El Gallo Project |  | Sinaloa |  | Mexico | ​ |  | 3,353 | ​ |  | 3,353 | ​
Fenix Project Properties |  | Sinaloa |  | Mexico | ​ |  | 5,807 | ​ |  | 5,807 | ​
Total mineral property interests | ​ | ​ | ​ | ​ | ​ | $ | 297,332 | ​ | $ | 280,118 | ​

X
- References No definition available. + Details
Name: | mux_MineralPropertyInterestsPlantAndEquipmentAndConstructionInProgressAbstract
Namespace Prefix: | mux_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of mineral properties held by the entity. + References No definition available. + Details
Name: | mux_ScheduleOfMineralPropertiesTableTextBlock
Namespace Prefix: | mux_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 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
Name: | us-gaap_PropertyPlantAndEquipmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration