v3.25.3
Interests in Joint Arrangements (Details)
$ in Millions, $ in Millions
 12 Months Ended
Dec. 14, 2023
CAD ($)
Nov. 27, 2022
AUD ($)
Oct. 15, 2021
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Moblan Lithium Project [Member]            
Joint ventures [Abstract]            
Project [1]       Moblan Lithium Project    
Country [1]       Canada    
Name of counterparty [1]       Investissement Québec    
Ownership interest     60.00% 60.00% [1] 60.00% [1] 60.00% [1]
Moblan Lithium Project [Member] | Investissement Quebec [Member]            
Joint ventures [Abstract]            
Ownership interest     40.00%      
Morella Lithium Joint Venture [Member]            
Joint ventures [Abstract]            
Project [2]       Morella Lithium Joint Venture    
Country [2]       Australia    
Name of counterparty [2]       Morella Corporation Limited    
Ownership interest   51.00%   49.00% [2] 49.00% [2] 49.00% [2]
Exploration spend requirement   $ 1.5        
Period of exploration to spend requirement       3 years    
Vallee lithium project [Member]            
Joint ventures [Abstract]            
Project [3]       Vallée Lithium Project    
Country [3]       Canada    
Name of counterparty [3]       Consolidated Lithium Metals Inc.    
Ownership interest 25.00%     25.00% [3] 25.00% [3] 0.00% [3]
Exploration spend requirement $ 4.0          
Period of exploration to spend requirement       12 months    
[1] On 15 October 2021, the Group acquired a 60 per cent interest in the Moblan Lithium Project, a drilling deposit host to high grade spodumene mineralisation. The project is 40 per cent owned by Investissement Québec.
[2] On 27 November 2022, Morella Corporation Limited satisfied the requirements under the Earn-In Agreement relating to several Pilbara tenements with lithium rights located in the Pilgangoora district in Western Australia, Australia. Under the agreement, Morella Corporation Limited was required to spend $1.5 million on exploration within three years in order to earn a 51 per cent interest in the project. The Joint Venture Agreement was executed on 15 July 2024.
[3] On 14 December 2023, North American Lithium Inc. satisfied a requirement under the Earn-In Agreement relating to the assets and mineral rights of the Vallée Lithium Project located in Québec, Canada. Under the agreement, North American Lithium Inc. was required to spend C$4.0 million on exploration within a twelve-month period to earn a 25 per cent interest in the project.