XML 104 R77.htm IDEA: XBRL DOCUMENT
v3.25.1

MINERAL PROPERTIES AND PROPERTY, PLANT AND EQUIPMENT (Schedule Related to Property, Plant and Equipment) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Mineral Properties, and Property, Plant and Equipment |  |
Beginning Balance | $ 1,574,212 |
Net Book Value | 1,539,187 | $ 1,574,212
Ending Balance | 1,539,187 | 1,574,212
Deferred tax liability | (31,163) | (16,899)
Gross carrying amount [member] |  |
Mineral Properties, and Property, Plant and Equipment |  |
Beginning Balance | 2,770,323 | 2,438,696
Acquisition of Roxgold |  | 59,144
Additions | 227,766 | 275,821
Changes in closure and reclamation provision | 2,845 | 9,559
Disposals and write-offs | (20,623) | (12,897)
Ending Balance | 2,980,311 | 2,770,323
Accumulated depreciation, amortisation and impairment [member] |  |
Mineral Properties, and Property, Plant and Equipment |  |
Beginning Balance | (1,196,111) | (871,075)
Disposals and write-offs | (5,341) | (6,650)
Impairment |  | 90,615
Depletion and depreciation | 250,354 | 241,071
Ending Balance | (1,441,124) | (1,196,111)
Mining property [member] | Depletable [member] |  |
Mineral Properties, and Property, Plant and Equipment |  |
Net Book Value | 714,787 | 817,087
Mining property [member] | Depletable [member] | Gross carrying amount [member] |  |
Mineral Properties, and Property, Plant and Equipment |  |
Beginning Balance | 1,540,342 | 866,999
Additions | 82,553 | 100,366
Changes in closure and reclamation provision | 2,890 | 9,407
Disposals and write-offs |  | (142)
Transfers | (10,612) | 563,712
Ending Balance | 1,615,173 | 1,540,342
Mining property [member] | Depletable [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Mineral Properties, and Property, Plant and Equipment |  |
Beginning Balance | (723,255) | (506,268)
Disposals and write-offs |  | (40)
Impairment |  | 60,602
Depletion and depreciation | 177,131 | 156,425
Ending Balance | (900,386) | (723,255)
Mining property [member] | Non Depletable [member] |  |
Mineral Properties, and Property, Plant and Equipment |  |
Net Book Value | 272,610 | 244,235
Deferred tax liability | 1,600 |
Mining property [member] | Non Depletable [member] | Gross carrying amount [member] |  |
Mineral Properties, and Property, Plant and Equipment |  |
Beginning Balance | 244,235 | 712,269
Acquisition of Roxgold |  | 58,862
Additions | 29,165 | 39,835
Disposals and write-offs | (14,485) | (5,883)
Transfers | 13,695 | (560,848)
Ending Balance | 272,610 | 244,235
Construction in progress [member] |  |
Mineral Properties, and Property, Plant and Equipment |  |
Net Book Value | 73,843 | 44,169
Construction in progress [member] | Gross carrying amount [member] |  |
Mineral Properties, and Property, Plant and Equipment |  |
Beginning Balance | 44,218 | 154,647
Additions | 74,018 | 111,690
Transfers | (44,344) | (222,119)
Ending Balance | 73,892 | 44,218
Construction in progress [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Mineral Properties, and Property, Plant and Equipment |  |
Beginning Balance | (49) |
Impairment |  | 49
Ending Balance | (49) | (49)
Other property, plant and equipment [member] |  |
Mineral Properties, and Property, Plant and Equipment |  |
Net Book Value | 477,947 | 468,721
Other property, plant and equipment [member] | Gross carrying amount [member] |  |
Mineral Properties, and Property, Plant and Equipment |  |
Beginning Balance | 941,528 | 704,781
Acquisition of Roxgold |  | 282
Additions | 42,030 | 23,930
Changes in closure and reclamation provision | (45) | 152
Disposals and write-offs | (6,138) | (6,872)
Transfers | 41,261 | 219,255
Ending Balance | 1,018,636 | 941,528
Other property, plant and equipment [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Mineral Properties, and Property, Plant and Equipment |  |
Beginning Balance | (472,807) | (364,807)
Disposals and write-offs | (5,341) | (6,610)
Impairment |  | 29,964
Depletion and depreciation | 73,223 | 84,646
Ending Balance | $ (540,689) | $ (472,807)

X
- Definition The decrease in property, plant and equipment resulting from disposals and write-offs. + References No definition available. + Details
Name: | fsm_DisposalsAndWriteOffsOfPropertyPlantAndEquipment
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Increase (decrease) change in rehabilitation provision. + References No definition available. + Details
Name: | fsm_IncreaseDecreaseChangeInRehabilitationProvision
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. + References No definition available. + Details
Name: | fsm_PropertyPlantAndEquipmentNetBookValue
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase in property, plant and equipment resulting from acquisitions through business combinations. [Refer: Total for all business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 73 -Subparagraph e -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e_iii&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Total for all business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 73 -Subparagraph e -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e_i&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of deferred tax expense or income relating to the creation or reversal of temporary differences. [Refer: Temporary differences [member]; Deferred tax expense (income)] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 12 -IssueDate 2024-01-01 -Paragraph 80 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_80_c&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of depreciation of property, plant and equipment. [Refer: Depreciation and amortisation expense; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 73 -Subparagraph e -Clause vii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e_vii&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 75 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_75_a&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_DepreciationPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of impairment loss recognised in profit or loss for property, plant and equipment including right-of-use assets. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment including right-of-use assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipmentIncludingRightofuseAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The increase (decrease) in property, plant and equipment resulting from transfers and changes that the entity does not separately disclose in the same statement or note. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of property, plant and equipment including right-of-use assets whose underlying assets would be presented as property, plant and equipment if they were owned. [Refer: Property, plant and equipment; Right-of-use assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 47 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_47_a&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 54 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_a&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_GrossCarryingAmountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_AccumulatedDepreciationAmortisationAndImpairmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_MiningPropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfAssetsAxis=fsm_DepletableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfAssetsAxis=fsm_NonDepletableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_ConstructionInProgressMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_OtherPropertyPlantAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |