Property, Plant and Equipment, Net - Disposals (Details) - USD ($)				9 Months Ended
	Dec. 04, 2020	Jul. 14, 2020	Apr. 09, 2020	Sep. 30, 2021	Jul. 14, 2021	Dec. 31, 2020
Property, plant and equipment
Minimum work expenditures spend to withdraw agreement				$ 1,000,000
Contract with Customer, Liability, Current				$ 116,000	$ 500,000	$ 535,000
Barrick Earn-In Agreement
Property, plant and equipment
Investment ownership percentage				30.00%
Barrick Gold Corporation | Barrick Earn-In Agreement
Property, plant and equipment
Total work expenditure Incur				$ 10,000,000
Period for work expenditure				8 years
Work expenditure incur for year one				$ 500,000
Work expenditure incur for year two				500,000
Work expenditure incur for year three				1,000,000
Work expenditure incur for year four				1,000,000
Work expenditure incur for year five				1,000,000
Work expenditure incur for year six				2,000,000
Work expenditure incur for year seven				2,000,000
Work expenditure incur for year eight				2,000,000
Minimum work expenditures spend to withdraw agreement				$ 1,000,000
Number of Days Notice Required to Withdraw Agreement				30 days
NewCo | Barrick Earn-In Agreement
Property, plant and equipment
Investment ownership percentage				70.00%
Sale of Santa Maria Property
Property, plant and equipment
Remaining payment				$ 200,000
Remaining Period Of Time For Final Payment				1 year
Sale of Santa Maria Property | Fabled Copper Corp. | Binding Letter of Intent Agreement
Property, plant and equipment
Percentage of interest claims		100.00%
Cash consideration received	$ 500,000
Consideration Received in Shares | shares	1,000,000
First year anniversary consideration	$ 1,500,000
Second year anniversary consideration	$ 2,000,000
Percentage of royalty return	1.00%
Velardena Properties
Property, plant and equipment
Investment ownership percentage				100.00%
El Quevar Project
Property, plant and equipment
Investment ownership percentage				100.00%
El Quevar Project | Barrick Gold Corporation | Barrick Earn-In Agreement
Property, plant and equipment
Investment ownership percentage			70.00%
Private Placement | Barrick Gold Corporation
Property, plant and equipment
Sale of Stock, Number of Shares Issued in Transaction			4,719,207
Sale of Stock, Price Per Share			$ 0.2119