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Asset retirement obligations (“ARO”) (Tables)
 12 Months Ended
Dec. 31, 2025
Asset Retirement Obligations  
Schedule of provisions for assets retirement obligations
          
   12/31/2025  12/31/2024
Xuxa Mine (1)   2,924    2,169 
Barreiro Mine (2)   954    734 
Total   3,878    2,903 

 

1 - Related to Phase I classified within property, plant and equipment.
2 - Related to Phase II classified within Deferred exploration and evaluation expenditure.
Schedule of changes in asset retirement obligations
          
   12/31/2025  12/31/2024
Opening balances   2,903    2,893 
           
Accretion of asset retirement obligation   239    156 
Addition of fixed assets   305    614 
Addition (reversal) of exploration assets   67    (100)
Foreign currency translation adjustment of subsidiary   364    (660)
           
Asset retirement obligation total   3,878    2,903