Cover [Abstract] Document Information [Table] Document Information [Line Items] Document Type Document Type Entity Registrant Name Entity Registrant Name Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Ex Transition Period Entity Ex Transition Period Entity Central Index Key Amendment Flag Amendment Description Condensed Consolidated Balance Sheets Assets [Abstract] ASSETS Assets, Current [Abstract] Current Cash and Cash Equivalents, at Carrying Value Cash Amount of receivables and prepayments. Receivables And Prepayments Current Receivables and prepayments Assets, Current Total current assets Assets, Noncurrent [Abstract] Non-current Amount of exploration licenses. Exploration Licenses Noncurrent Balance at the end Balance at the beginning Balance at ending Exploration contracts Exploration contracts (Note 11) Property, Plant and Equipment, Net Equipment Property, Plant and Equipment, Net Assets, Noncurrent Total non-current assets Assets TOTAL ASSETS Liabilities [Abstract] LIABILITIES Liabilities, Current [Abstract] Current Accounts Payable and Accrued Liabilities, Current Accounts payable and accrued liabilities Outstanding payables Amount of deferred acquisition costs. Deferred Acquisition Costs Deferred acquisition costs Liabilities, Current Total current liabilities Liabilities, Noncurrent [Abstract] Non-current Deferred Income Tax Liabilities, Net Deferred tax liability1 Deferred tax liability Amount of Warrant Liability. Warrant Liability Warrants liability Liabilities TOTAL LIABILITIES Stockholders' Equity Attributable to Parent [Abstract] EQUITY Common Stock, Value, Issued Common shares (unlimited shares, no par value - issued: 226,780,843 (December 31, 2021 - 225,432,493)) Preferred Stock, Value, Issued Preferred shares (unlimited share, no par value - issued: nil (December 31, 2020 - 509,459)) Represents the Special shares value. Special Shares Value Class A - J Special Shares Additional Paid in Capital. Additional paid in capital Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Retained Earnings (Accumulated Deficit) Deficit Stockholders' Equity Attributable to Parent TOTAL EQUITY Liabilities and Equity TOTAL LIABILITIES AND EQUITY Statement [Table] Class of Stock [Axis] Class of Stock [Domain] Represents information pertaining to Class A Special Shares. Class A special shares Represents information pertaining to Class B Special Shares. Class B special shares Represents information pertaining to Class C Special Shares. Class C special shares Represents information pertaining to Class D Special Shares. Class D special shares Represents information pertaining to Class E Special Shares. Class E special shares Represents information pertaining to Class F Special Shares. Class F special shares Represents information pertaining to Class G Special Shares. Class G special shares Represents information pertaining to Class H Special Shares. Class H special shares Represents information pertaining to Class I Special Shares. Class I special shares Represents information pertaining to Class J Special Shares. Class J special shares Statement [Line Items] Common Stock, No Par Value Common shares, no par value Common Stock, Shares, Issued Number of ending balance Number of beginning balance Ordinary shares, issued Preferred Stock, No Par Value Preferred shares, no par value Preferred Stock, Shares Issued Preference shares, shares issued Preferred Stock, Shares Outstanding Preference shares, shares outstanding Condensed Consolidated Statements of Loss and Comprehensive Loss Operating Expenses [Abstract] Operating expenses Exploration Expense Exploration and evaluation expenses General and Administrative Expense General and administrative expenses Operating Income (Loss) Operating loss Other Items [Abstract] Other items Fair Value Adjustment of Warrants Change in fair value of warrants liability Foreign Currency Transaction Gain (Loss), before Tax Foreign exchange loss Interest Income (Expense), Net Interest expense Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Loss and comprehensive loss for the period Net loss for the year Earnings Per Share, Basic and Diluted [Abstract] Loss per share Earnings Per Share, Basic Earnings Per Share, Diluted Weighted average number of common shares outstanding - diluted Weighted average number of common shares outstanding - basic Condensed Consolidated Statements of Changes in Equity Equity Components [Axis] Equity Component [Domain] Common shares Preferred shares Represents the Special shares. Special Shares Additional Paid in Capital Accumulated Other Comprehensive Loss Deficit Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Balance Balance Shares, Outstanding Balance (in Shares) Balance (in Shares) Stock Issued During Period, Value, Stock Options Exercised Amount of Exercise of stock options Exercise of stock options (Note 6) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Stock options issued or exercised Exercise of stock options (Note 6) (in shares) Number of Exercise of stock options (in Shares) Stock Issued During Period, Shares, Conversion of Units Conversion of restricted share units, net of shares withheld for taxes (Note 6) (shares) Conversion of restricted share units (in shares) Stock Issued During Period, Value, Conversion of Units Conversion of restricted share units, net of shares withheld for taxes (Note 6) Conversion of restricted share units Common shares to be issued for exploration expenses shares. Common Shares To Be Issued For Exploration Expenses Shares Common shares to be issued for exploration and evaluation expenses (Note 6) (in shares) Amount related to common shares to be issued for exploration expenses. Common shares to be issued for exploration and evaluation expenses (Note 6) Represent to Adjustments To Additional Paid In Capital Share based Payment Expenses Settled Adjustments To Additional Paid In Capital Share based Payment Expenses Settled Expenses to be settled in share-based payments Stock Issued During Period, Value, Conversion of Convertible Securities Conversion of debentures Stock Issued During Period, Shares, Conversion of Convertible Securities Conversion of debentures (in shares) Number Of Conversion Of Debentures (in Shares) APIC, Share-based Payment Arrangement, Increase for Cost Recognition Share-based compensation (Note 6) Amount related to common shares to be issued for options exercise. Common Shares To Be Issued For Options Exercise Common shares to be issued for stock options exercise Shares issued during shares period private placement. Shares Issued During Shares Period Private Placement Private placements (net of financing costs) (in shares) Stock Issued During Period, Value, Acquisitions Amount of Issued in Business Combination Net equity from Business Combination (Note 6) Common shares issued for acquisition of Tonga Offshore Minerals Limited (Note 7) Stock Issued During Period, Shares, Acquisitions Number Of Issued in Business Combination (in Shares) Net equity from Business Combination (Note 6) (in shares) Common shares issued for acquisition of Tonga Offshore Minerals Limited (Note 7) (in shares) Common shares issued for acquisition of Tonga Offshore Minerals Limited. Common Shares Issued For Acquisition Of Tonga Offshore Minerals Limited Share-based compensation (Note 16) Stock Issued During Period, Value, Issued for Services Common shares issued for services Stock Issued During Period, Shares, Issued for Services Common shares issued for services (in shares) Value of stock issued during the period upon the conversion of preferred shares. Conversion of Preferred Shares to Common Stock Conversion of preferred shares to common shares Amount of conversion of preferred shares to common shares Stock issued during period shares conversion of preferred shares. Stock Issued During Period Shares Conversion Of Preferred Shares Conversion of preferred shares to common shares (in shares) Net Income (Loss) Attributable to Parent Loss for the period Loss for the period Condensed Consolidated Statements of Cash Flows Net Cash Provided by (Used in) Operating Activities [Abstract] Cash provided by (used in) Operating activities Items Not Affecting Cash Abstract Items not affecting cash: Amortization Amortization Share-based Payment Arrangement, Noncash Expense Expenses settled with share-based payments Represent of Expenses to be settled with share-based payments Expenses to be settled with share-based payments Increase (Decrease) in Interest Payable, Net Interest on convertible debentures Foreign Currency Transaction Gain (Loss), Unrealized Unrealized foreign exchange Increase (Decrease) in Operating Capital [Abstract] Changes in working capital: The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services and prepaid expenses. Increase (Decrease) in Receivables and Prepaid Expense Receivables and prepayments Increase (Decrease) in Accounts Payable and Accrued Liabilities Accounts payable and accrued liabilities Net Cash Provided by (Used in) Operating Activities Net cash used in operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Investing activities The cash outflow of payment for deferred acquisition costs. Payment For Deferred Acquisition Costs Settlement of deferred acquisition costs Payments to Acquire Machinery and Equipment Acquisition of equipment Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Financing activities Proceeds from Stock Options Exercised Proceeds from exercise of stock options Proceeds from Convertible Debt Proceeds from issuance of convertible debentures Payment, Tax Withholding, Share-based Payment Arrangement Taxes withheld and paid on share-based compensation Proceeds from net contributions from business combination. Net contributions from Business Combination Proceeds from Business Combination (net of fees and other costs) Net contributions from Business Combination Net Cash Provided by (Used in) Financing Activities Net cash (used in) provided by financing activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect (Decrease) increase in cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Impact of exchange rate changes on cash Effect of Exchange Rate on Cash and Cash Equivalents Impact of exchange rate changes on cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash - end of period Cash - beginning of period Nature of Operations Nature of Operations. Nature of Operations No definition available. Basis of Presentation Business Description and Basis of Presentation [Text Block] Basis of Presentation Significant Accounting Policies Significant Accounting Policies [Text Block] Significant Accounting Policies No definition available. Significant Accounting Estimates and Judgements No definition available. Significant Accounting Estimates And Judgement Text Block Significant Accounting Estimates and Judgements Recent Accounting Pronouncements Issued and Adopted Error Correction [Text Block] Recent Accounting Pronouncements Issued and Adopted Business Combination Business Combination Disclosure [Text Block] Business Combination TOML Acquisition Asset Acquisition [Text Block] TOML Acquisition Financial Instruments Financial Instruments Disclosure [Text Block] Financial Instruments Receivables And Prepayments. Receivables And Prepayments Text Block Receivables and Prepayments Equipment Property, Plant and Equipment Disclosure [Text Block] Equipment Exploration Contracts. No definition available. Explorations License [Text Block] Exploration Contracts General and Administrative Expenses. The entire disclosure of General and Administrative Expenses. Disclosure of General and Administrative Expenses [Text Block] General and Administrative Expenses Convertible Debentures Debt Disclosure [Text Block] Convertible Debentures The disclosure of Warrant liability abstract. Warrants The entire disclosure of warrant liability. Warrants Liability [Text Block] Warrants Common Shares. Stockholders' Equity Note Disclosure [Text Block] Common Shares Share-Based Compensation Share-based Payment Arrangement [Text Block] Share-Based Compensation Loss per Share Earnings Per Share [Text Block] Loss per share Related Party Transactions Related Party Transactions Disclosure [Text Block] Related Party Transactions Commitments and Contingent Liabilities Commitments and Contingencies Disclosure [Text Block] Commitments and Contingent Liabilities Supplemental Cash Flow Information Cash Flow, Supplemental Disclosures [Text Block] Supplemental Cash Flow Information Segmented Information Segment Reporting Disclosure [Text Block] Segmented Information Income Taxes Income Tax Disclosure [Text Block] Income Taxes Subsequent Events Subsequent Events [Text Block] Subsequent Events Foreign Currency Transactions and Translations Policy [Policy Text Block] Foreign Currencies Use of Estimates, Policy [Policy Text Block] Use of Estimates Earnings Per Share, Policy [Policy Text Block] Loss Per Share Financial Instruments Policy Text Block Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Fair Value of Financial Instruments Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Property, Plant and Equipment, Policy [Policy Text Block] Equipment Lessee, Leases [Policy Text Block] Leases Represents the accounting policy related to exploration contracts. Exploration Contracts [Policy Text Block] Exploration Contracts Exploration and Evaluation Expenses Exploration and Evaluation Expenses [Policy Text Block] Exploration and Evaluation Expenses Share-based Payment Arrangement [Policy Text Block] Share-Based Compensation Derivatives, Policy [Policy Text Block] Warrants Liability Income Tax, Policy [Policy Text Block] Income Taxes Valuation of Warrants Liability. Valuation of Warrants Liability [Policy Text Block] Valuation of warrants liability Basis of Accounting, Policy [Policy Text Block] Basis of Presentation The tabular disclosure of principal subsidiaries of the Company, their activities, and their geographic locations. Schedule of Principal Subsidiaries, Their Activities and Their Geographic Locations [Table Text Block] Summary of principal subsidiaries of the Company, their activities, and their geographic locations The tabular disclosure of major categories of equipment which are amortized on declining balance basis. Summary of Major Categories of Equipment Which are Amortized on Declining Balance Basis [Table Text Block] The tabular disclosure of the Special Shares and their respective vesting thresholds, assuming the full amount of Special Shares from Rollover Options are issued. Schedule Of The Special Shares And Their Respective Vesting Thresholds, Assuming The Full Amount Of Special Shares From Rollover Options Are Issued [Table Text Block] Summary of the Special Shares and their respective vesting thresholds, assuming the full amount of Special Shares from Rollover Options are issued