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Basis of preparation of the consolidated financial statements (Details 6) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]      
Cost of sales $ (2,228,410) $ (2,274,357) $ (2,393,936)
Gross profit 538,071 298,876 640,054
Operating income (loss) 276,386 (152,562) 360,897
Adjusted EBITDA 714,080 406,041 763,205
(Loss) Income before income tax $ (71,851) (296,084) 227,971
Previously stated [member]      
IfrsStatementLineItems [Line Items]      
Gross profit   296,476 638,810
Operating income (loss)   (155,365) 359,219
(Loss) Income before income tax   (293,470) 227,377
Cost of sales   (2,276,757) (2,395,180)
Previously stated [member] | Mining Segment [Member]      
IfrsStatementLineItems [Line Items]      
Cost of sales   (1,028,281)  
Gross profit   61,995 342,786
Selling, general and administrative   (61,903) (64,444)
Mineral exploration and project evaluation   (90,297) (88,947)
Operating income (loss)   (267,428) 124,332
Depreciation and amortization   219,957 204,514
Adjusted EBITDA   149,058 439,839
Cost of sales     (905,241)
Previously stated [member] | Smelting Segment [Member]      
IfrsStatementLineItems [Line Items]      
Cost of sales   (1,726,568)  
Gross profit   220,093 276,064
Selling, general and administrative   (61,233) (60,435)
Mineral exploration and project evaluation   (9,369) (9,915)
Operating income (loss)   117,783 248,527
Depreciation and amortization   77,585 78,727
Adjusted EBITDA   246,967 326,429
Cost of sales     (2,190,903)
Previously stated [member] | Operating Segment [Member]      
IfrsStatementLineItems [Line Items]      
Cost of sales   (2,276,757)  
Gross profit   296,476 638,810
Selling, general and administrative   (126,948) (145,543)
Mineral exploration and project evaluation   (99,666) (98,862)
Operating income (loss)   (155,365) 359,219
Depreciation and amortization   298,393 290,937
Adjusted EBITDA   391,156 760,324
Depreciation and amortization   (298,393) (290,937)
Net financial results   (161,641) (133,727)
(Loss) Income before income tax   (293,470) 227,377
Cost of sales     (2,395,180)
Adjustments [Member]      
IfrsStatementLineItems [Line Items]      
Gross profit   2,400 1,244
Operating income (loss)   2,803 1,678
(Loss) Income before income tax   (2,614) 594
Cost of sales   2,400 1,244
Adjustments [Member] | Mining Segment [Member]      
IfrsStatementLineItems [Line Items]      
Cost of sales   2,103  
Gross profit   2,103 871
Selling, general and administrative   213 225
Mineral exploration and project evaluation   59 80
Operating income (loss)   2,375 1,176
Depreciation and amortization   9,196 2,026
Adjusted EBITDA   11,571 3,202
Cost of sales     871
Adjustments [Member] | Smelting Segment [Member]      
IfrsStatementLineItems [Line Items]      
Cost of sales   297  
Gross profit   297 373
Selling, general and administrative   136 148
Mineral exploration and project evaluation   (5) (19)
Operating income (loss)   428 502
Depreciation and amortization   2,886 (823)
Adjusted EBITDA   3,314 (321)
Cost of sales     373
Adjustments [Member] | Operating Segment [Member]      
IfrsStatementLineItems [Line Items]      
Cost of sales   2,400  
Gross profit   2,400 1,244
Selling, general and administrative   349 373
Mineral exploration and project evaluation   54 61
Operating income (loss)   2,803 1,678
Depreciation and amortization   12,082 1,203
Adjusted EBITDA   14,885 2,881
Depreciation and amortization   (12,082) (1,203)
Net financial results   (5,417) (1,084)
(Loss) Income before income tax   (2,614) 594
Cost of sales     1,244
Revised [Member]      
IfrsStatementLineItems [Line Items]      
Gross profit   298,876 640,054
Operating income (loss)   (152,562) 360,897
(Loss) Income before income tax   (296,084) 227,971
Cost of sales   (2,274,357) (2,393,936)
Revised [Member] | Mining Segment [Member]      
IfrsStatementLineItems [Line Items]      
Cost of sales   (1,026,178)  
Gross profit   64,098 343,657
Selling, general and administrative   (61,690) (64,219)
Mineral exploration and project evaluation   (90,238) (88,867)
Operating income (loss)   (265,053) 125,508
Depreciation and amortization   229,153 206,540
Adjusted EBITDA   160,629 443,041
Cost of sales     (904,370)
Revised [Member] | Smelting Segment [Member]      
IfrsStatementLineItems [Line Items]      
Cost of sales   (1,726,271)  
Gross profit   220,390 276,437
Selling, general and administrative   (61,097) (60,287)
Mineral exploration and project evaluation   (9,374) (9,934)
Operating income (loss)   118,211 249,029
Depreciation and amortization   80,471 77,904
Adjusted EBITDA   250,281 326,108
Cost of sales     (2,190,903)
Revised [Member] | Operating Segment [Member]      
IfrsStatementLineItems [Line Items]      
Cost of sales   (2,274,357)  
Gross profit   298,876 640,054
Selling, general and administrative   (126,599) (145,170)
Mineral exploration and project evaluation   (99,612) (98,801)
Operating income (loss)   (152,562) 360,897
Depreciation and amortization   310,475 292,140
Adjusted EBITDA   406,041 763,205
Depreciation and amortization   (310,475) (292,140)
Net financial results   (167,058) (134,811)
(Loss) Income before income tax   $ (296,084) 227,971
Cost of sales     $ (2,393,936)