Share capital - Schedule of ordinary shares (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2023	Dec. 31, 2022
Share capital
Beginning balance	$ 1
Share issuance cost	(5,763)
Ending balance	413,186	$ 1
Public shareholders - non-redemption
Share capital
Issue of shares	34,431
Glencore
Share capital
Rollover shares - Glencore	100,000
PIPE
Share capital
Share issuance cost	(3,989)
PIPE \| Osisko
Share capital
Issue of shares	15,000
PIPE \| Sprott
Share capital
Issue of shares	15,000
PIPE \| BlackRock
Share capital
Issue of shares	45,000
PIPE A and PIPE B
Share capital
Issue of shares	184,517
Backstop facility \| Osisko
Share capital
Issue of shares	$ 25,000
Ordinary shares
Number of shares
Beginning balance (in shares)	6,628,695	6,628,695
Issued during the year (in shares)	48,409,448
Ending balance (in shares)	48,409,448	6,628,695
Share capital
Beginning balance	$ 1	$ 1
Issue of shares	418,949	0
Share issuance cost	(5,763)
Ending balance	$ 413,186	$ 1
Ordinary shares \| Public shareholders - non-redemption
Number of shares
Issued during the year (in shares)	3,329,006
Share capital
Issue of shares	$ 34,431
Ordinary shares \| Glencore
Number of shares
Number of of shares issued for acquisition	10,000,000
Share capital
Rollover shares - Glencore	$ 100,000
Ordinary shares \| PIPE \| Osisko
Number of shares
Issued during the year (in shares)	1,500,000
Share capital
Issue of shares	$ 15,000
Ordinary shares \| PIPE \| Sprott
Number of shares
Issued during the year (in shares)	1,500,000
Share capital
Issue of shares	$ 15,000
Ordinary shares \| PIPE \| BlackRock
Number of shares
Issued during the year (in shares)	4,500,000
Share capital
Issue of shares	$ 45,000
Ordinary shares \| PIPE A and PIPE B
Number of shares
Issued during the year (in shares)	18,451,747
Share capital
Issue of shares	$ 184,517
Ordinary shares \| Backstop facility \| Osisko
Number of shares
Issued during the year (in shares)	2,500,000
Share capital
Issue of shares	$ 25,000

The increase (decrease) in equity resulting from the acquisition of subsidiaries. [Refer: Subsidiaries [member]]

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The increase in equity through the issue of equity instruments.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The nominal value of capital arising from issuing ordinary shares. [Refer: Issued capital]

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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