Entity Addresses, Address Type [Axis] Business Contact [Member] Classes of share capital [axis] Pre-capitalization [member] Components of equity [axis] Issued capital [member] Share premium [member] Other reserves [member] Retained earnings [member] Post-recapitalized [member] Categories of related parties [axis] Niobium Brazil Importacao E Exportacao Ltd [member] IMC Rare Earths Participacoes Ltda [member] I M C Rare Earths Participacoes Ltd [Member] Counterparties [axis] International Mineral Corporation Holdings Ltd [member] Ordinary shares [member] St James Place Ltd [member] UBO [member] Non-adjusting events after reporting period [axis] Events after reporting [member] Bonus Shares [member] Consolidated structured entities [axis] SJP [member] Types of antidilutive instruments [axis] Warrants [member] Measurement [axis] Binomial Option Pricing Model [member] Recapitalization [member] Range [axis] Bottom of range [member] Top of range [member] St James Place Limited [member] Other related parties [member] Parent [member] Classes of financial assets [axis] Equity investments [member] Havilah [member] Royalty Option Contract [member] Subsidiaries [axis] IMC Rare Earths Ltd [member] Niobium Brazil Importacao e Exportacao Ltda [member] Ionic Clays Brazil Ltda [member] Types of contracts [axis] Warrant Agreement [member] Entity Addresses [Table] Entity Addresses [Line Items] Document Type Amendment Flag Amendment Description Document Registration Statement Document Annual Report Document Quarterly Report Document Transition Report Document Shell Company Report Document Shell Company Event Date Document Period Start Date Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Current Fiscal Year End Date Entity File Number Entity Registrant Name Entity Central Index Key Entity Primary SIC Number Entity Tax Identification Number Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Three Entity Address, City or Town Entity Address, State or Province Entity Address, Country Entity Address, Postal Zip Code Country Region City Area Code Local Phone Number Extension Written Communications Soliciting Material Pre-commencement Tender Offer Pre-commencement Issuer Tender Offer Title of 12(b) Security No Trading Symbol Flag Trading Symbol Security Exchange Name Title of 12(g) Security Security Reporting Obligation Annual Information Form Audited Annual Financial Statements Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Elected Not To Use the Extended Transition Period Document Accounting Standard Other Reporting Standard Item Number Entity Shell Company Entity Public Float Entity Bankruptcy Proceedings, Reporting Current Entity Common Stock, Shares Outstanding Documents Incorporated by Reference [Text Block] Contact Personnel Name Profit or loss [abstract] Exploration and evaluation expenses General and administrative expenses Operating loss Finance cost Gains on fair value changes Loss before tax Income tax expenses Loss for the year Total comprehensive loss for the year Loss per share attributable to the ordinary equity holders of the Company: Basic loss per share attributable to shareholders Diluted loss per share attributable to shareholders Statement of financial position [abstract] ASSETS Current assets Prepayments Amounts due from related parties Marketable securities Cash Total current assets Total assets LIABILITIES Current liabilities Trade and other payables Amounts due to related parties Royalty option liability Warrant liability Loan from related party Total current liabilities Loan from related party Total non-current liabilities Net current liabilities Net liabilities EQUITY/(DEFICIT) Share capital Share premium Capital reserves Accumulated losses Total deficit Statement of changes in equity [table] IfrsStatementLineItems [Line Items] Balance Loss for the year Fair value adjustment on loan from related party Transfer of Ionic to IMC Brazil Incorporation of the Company Grant of royalty option to related party Issuance of shares Balance Shares issued Par value per share Shares authorised Statement of cash flows [abstract] Cash flows from operating activities Adjustments: Finance costs Gains on fair value changes Increase in prepayments Increase in trade and other payables Increase in amounts due to related parties Net cash outflow from operating activities Cash flows from financing activities Loans from related party Issue of shares and warrants Net cash inflow from financing activities Net increase in cash Cash and cash equivalent at the beginning of year Cash and cash equivalent at the end of year Total Cash General Information General information Notes and other explanatory information [abstract] Summary of material accounting policies Significant estimates and judgements Exploration and evaluation expenses General and administrative expenses Finance cost Gains On Fair Value Changes Gains on fair value changes Income tax expense Loss per share Prepayments Trade and other payables Warrant Liability Warrant Liability Share Capital and Share Premium Other Reserves And Accumulated Losses Other reserves and accumulated losses Dividends Contingent liabilities and contingent assets Commitments Related party transactions Subsidiaries Financial risk management Disclosure of events after reporting period [text block] Subsequent events Basis of preparation Principles of consolidation Functional and presentation currency Research and development Exploration and evaluation expenditure Income tax Business combinations under common control Cash Marketable securities Trade and other payables Royalty option liability and warrant liability Loans from related parties Contributed equity Rounding of amounts Segmental reporting Schedule of exploration and evaluation expenses Schedule of general and administrative expenses Schedule of finance cost Schedule of gains on fair value changes Schedule of income and tax expenses Schedule of loss per share Schedule of prepayments Schedule of trade and other payables Schedule of warrant liability Schedule of share capital and share premium Summary of capital reserves and accumulated losses Schedule of related party transactions Schedule of subsidiaries Schedule of financial assets and liabilities at amortized cost Disclosure of transactions between related parties [table] Number of warrant shares issued Par value Group interest Geological consulting services Professional fees Management fees Travel expenses Administrative expenses Software subscription License rental Other expenses Total Imputed interest expense on related party loan (note a) Fair value gain on marketable securities (note b) Bank interest expense Finance cost Net loss Total deficit Investment Loan amount Market interest rate Fair value gain in finance costs Schedule Of Gains On Fair Value Changes Fair value gain on warrant liability (note 12) Fair value gain on royalty option liability (note 18.4) Gains on fair value changes Loss before income tax expense Notional tax calculated at rates applicable to profits in the tax jurisdictions concerned Unused tax losses for which no deferred tax asset has been recognized Income tax expenses Loss for the year for the purpose of basic and diluted loss per share Weighted average number of ordinary shares for the purpose of basic loss per share - post-recapitalization Weighted average number of ordinary shares for the purpose of diluted loss per share - post-recapitalization Deferred tax Current income tax Accumulated tax losses Description related to accumulated tax losses Disclosure of non-adjusting events after reporting period [table] Divided paid Shares issued Dividends per share price Trade payables Accrued expenses Trade and other payables Deferred transaction costs Disclosure of fair value measurement of assets [table] Time to expiry (year) Spot price (pre-recapitalization) Risk-free rate Volatility Disclosure of information about consolidated structured entities [table] Percentage of share capital acquired Other borrowings Number of shares issued Exercise price Conversion of issued ordinary share capital Warrants maturity date Fair value of SJP Warrants Fair value gain on warrant liability Ordinary shares fully paid Ordinary shares fully paid amount Bonus conversion Warrant to company Number of ordinary share for subscription Issued capital number of shares Warrants granted Exercise price of share Description related to subscription Subscription Description related to bonus issue of share Summary Of Capital Reserves And Accumulated Losses Capital reserve Beginning of the year Loans advanced, net Finance cost Fair value adjustment End of year Dividends Disclosure of subsidiaries [table] Place of business or country of incorporation Registered share capital Ownership interest Amounts due from related parties Financial assets measured at amortized cost Trade and other payables Amounts due to related parties Loans from related party Financial liabilities measured at amortized cost - non-interest bearing Unsecured loan Loan interest rate Loan repayment Market based interest rate Warrant description Royalty option recognized at fair value Estimated fair value amount Fair value change in royalty Fair value of royalty option, description Management services fee Expense reimbursement Accruals Description of accounting policy for basis of preparation explanatory. A component of equity representing the capital reserves. Pre-capitalization [member] Recapitalization [member] Market interest rate. Description of expected term warrants. Niobium Brazil Importacao E Exportacao Ltd [member] IMC Rare Earths Participacoes Ltd [member] Current marketable securities. International Mineral Corporation Holdings Ltd [member] Current royalty option liability. St James Place Ltd [member] UBO [member] Description of accounting policy for marketable securities explanatory. Description of accounting policy for royalty option liability and warrant liability explanatory. Description of accounting policy for loans from related parties explanatory. Description of accounting policy for contributed equity explanatory. Description of accounting policy for roundings of amounts explanatory. Increase decrease through recapitalization of incorporation of company. Grant of royalty option to related party. Disclosure of exploration and evaluation expenses explanatory. Disclosure of detailed information about general and administrative expense explanatory. Software subscription. Principles of consolidation explanatory. Niobium Brazil Importacao e Exportacao Ltda [member] Ionic Clays Brazil Ltda [member] Fair value gain on marketable securities. Disclosure of gains on fair value changes explanatory. Fair value gain on warrant liability. Fair value gain on royalty option liability. Description related to accumulated tax losses. Events after reporting [member] Bonus Shares [member] Disclosure of warrant liability explanatory. Deferred transaction costs. Binomial Option Pricing Model [member] Disclosure of capital reserves activity reclassified into equity explanatory. SJP [member] Conversion of issued ordinary share capital. Warrants maturity date. Fair value of Sjp warrants. Number of shares issued and fully paid amount. Description related to bonus issue of share. SJP warrants granted number. St James Place Limited [member] Warrant Agreement [member] Number of ordinary share for subscription. Issued capital number of shares. Royalty Option Contract [member] IMC Rare Earths Ltd [member] IMC Rare Earths Participacoes Ltda [member] Disclosure of other reserves and accumulated losses explanatory. Post-recapitalized [member] Management fees. Percentage of share capital acquired. Disclosure of detailed information about finance costs explanatory. Disclosure of detailed information about gains on fair value changes explanatory. Disclosure of detailed information about reconciliation between tax on earnings before income and tax expenses explanatory. Disclosure of detailed information about trade and other payables explanatory. Disclosure of detailed information about warrant liability explanatory. Disclosure of detailed information about share capital and share premium explanatory. Market based interest rate. Havilah [member] Fair value of royalty option description. The entire disclosure for general information of financial statements. Fair value adjustment on loan from related party. Description related to subscription. Finance cost. General and administrative expense Profit (loss) from operating activities Finance costs [Default Label] Comprehensive income Current assets [Default Label] Assets Trade and other current payables Other current liabilities CurrentRoyaltyOptionLiability Current warrant liability Current borrowings Current liabilities [Default Label] Non-current portion of non-current borrowings Non-current liabilities Current assets (liabilities) Assets (liabilities) Equity Cash flows from (used in) operating activities Cash flows from (used in) financing activities Increase (decrease) in cash and cash equivalents after effect of exchange rate changes DisclosureOfGainsOnFairValueChangesExplanatory Disclosure of lease prepayments [text block] DisclosureOfWarrantLiabilityExplanatory Description of accounting policy for determining components of cash and cash equivalents [text block] DescriptionOfAccountingPolicyForMarketableSecuritiesExplanatory Description of accounting policy for trade and other payables [text block] Finance income (cost) Adjustments for gains (losses) on fair value adjustment, investment property Tax benefit arising from previously unrecognised tax loss, tax credit or temporary difference of prior period used to reduce deferred tax expense Current trade payables Dividends recognised as distributions to owners Current trade receivables Current payables to related parties Current financial liabilities at amortised cost