The amount of outstanding funds that the entity is obligated to repay.

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The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

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The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

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The amount of contractual undiscounted cash flows in relation to lease liabilities before deducting finance charges. [Refer: Lease liabilities]

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The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

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The amount of contractual undiscounted cash flows in relation to non-derivative financial liabilities.

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The amount of trade payables and other payables. [Refer: Trade payables; Other payables]

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The amount of contractual undiscounted cash flows in relation to trade and other payables. [Refer: Trade and other payables]

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The amount of contractual undiscounted cash flows in relation to borrowings.

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Financial instruments and financial risk management - Liquidity risk (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Jan. 01, 2022	Dec. 31, 2021
Maturity profile of the Group's financial liabilities based on contractual terms
Cash and cash equivalents	$ 43,732	$ 42	$ 693	$ 955	$ 955
Carrying amount
Lease liabilities - undiscounted	16,247
Outstanding amount	425,907	786
Carrying amount	809,219	290,151		262,574
Liquidity risk
Maturity profile of the Group's financial liabilities based on contractual terms
Cash and cash equivalents	43,732	42		$ 955
Carrying amount
Trade payables and accrued liabilities	63,754	927
Lease liabilities - undiscounted	16,247
Carrying amount	505,908	1,713
Liquidity risk \| Within 1 year
Contractual cash flows
Trade payables and accrued liabilities	63,754	927
Lease liabilities - undiscounted	6,108
Contractual cash flows	112,407	1,713
Liquidity risk \| 1 - 2 years
Contractual cash flows
Lease liabilities - undiscounted	6,107
Contractual cash flows	64,237
Liquidity risk \| More than 2 years
Contractual cash flows
Lease liabilities - undiscounted	6,107
Contractual cash flows	567,948
Liquidity risk \| Mezzanine Debt Facility
Carrying amount
Outstanding amount	75,663
Liquidity risk \| Mezzanine Debt Facility \| More than 2 years
Contractual cash flows
Lease liabilities - undiscounted	135,000
Liquidity risk \| Senior Syndicated Facility Agreement
Carrying amount
Outstanding amount	195,121
Liquidity risk \| Senior Syndicated Facility Agreement \| Within 1 year
Contractual cash flows
Lease liabilities - undiscounted	29,590
Liquidity risk \| Senior Syndicated Facility Agreement \| 1 - 2 years
Contractual cash flows
Lease liabilities - undiscounted	37,430
Liquidity risk \| Senior Syndicated Facility Agreement \| More than 2 years
Contractual cash flows
Lease liabilities - undiscounted	137,940
Liquidity risk \| Copper Purchase Agreement
Carrying amount
Outstanding amount	79,859
Liquidity risk \| Copper Purchase Agreement \| Within 1 year
Contractual cash flows
Lease liabilities - undiscounted	493
Liquidity risk \| Copper Purchase Agreement \| 1 - 2 years
Contractual cash flows
Lease liabilities - undiscounted	11,562
Liquidity risk \| Copper Purchase Agreement \| More than 2 years
Contractual cash flows
Lease liabilities - undiscounted	181,477
Liquidity risk \| Silver Purchase Agreement
Carrying amount
Outstanding amount	75,264
Liquidity risk \| Silver Purchase Agreement \| Within 1 year
Contractual cash flows
Lease liabilities - undiscounted	12,462
Liquidity risk \| Silver Purchase Agreement \| 1 - 2 years
Contractual cash flows
Lease liabilities - undiscounted	9,138
Liquidity risk \| Silver Purchase Agreement \| More than 2 years
Contractual cash flows
Lease liabilities - undiscounted	$ 107,424
Liquidity risk \| Promissory note - related party
Carrying amount
Outstanding amount		786
Liquidity risk \| Promissory note - related party \| Within 1 year
Contractual cash flows
Debt facility and agreements		$ 786