Exploration and evaluation ("E&E") assets (Narrative) (Details) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Exploration And Evaluation Of Assets [Abstract]
Impairment of exploration and evaluation assets	$ 0	$ 6,199,198

Adjustments for impairment loss (reversal of impairment loss) on exploration and evaluation assets recognised in profit or loss to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Exploration and evaluation assets [member]; Impairment loss; Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss; Impairment loss (reversal of impairment loss) recognised in profit or loss]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2021-01-01
-Paragraph 20
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_20&doctype=Standard
-URIDate 2021-03-24

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration