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Mineral exploration and project evaluation (Tables)
12 Months Ended
Dec. 31, 2024
Notes and other explanatory information [abstract]  
Schedule of mineral exploration and project evaluation costs
     
  2024 2023 2022
Mineral exploration (48,855) (57,988) (61,925)
Project evaluation (19,121) (41,624) (36,876)
Mineral exploration and Project development  (67,976) (99,612) (98,801)