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Brazil
Caraíba (MCSA) Operation (Deepening Inferred (Extension) Project, Pilar (Caraiba) Mine, Surubim Mine, Vermelhos Mine)

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 Location:
385 km NNW from Salvador, Brazil

  Address:
Fazenda Caraíba, s/n, distrito de Pilar
Jaguarari
Brazil
48967-000
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WebsiteWeb
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  • Overview
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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Copper
Mining Method
  • Sub-level open stoping (SLOS)
  • Vertical Crater Retreat
  • Cemented backfill
  • Paste backfill
Production Start...
Mine Life12 years (as of Jan 1, 2021)
The regional MCSA operations include fully integrated processing operations and, currently, two active producing mining locations within the Curaçá Valley. The active operations include the Caraíba Complex (comprised of the underground Pilar Mine, integrated Caraíba Mill and the inactive solvent extraction electrowinning plant (“SX/EW Plant”)), and the underground Vermelhos Mine. The past producing operations include the open pit mines of R22 Mine, Surubim OP Mine as well as the historic mines of Angicos Mine and Suçuarana Mine”. Collectively the active and pastproducing mines comprise the “MCSA Mining Complex”.

The Surubim and C12 OP mines are currently undergoing a restart operating activities.
Latest NewsEro Copper Reports Fourth Quarter and Full Year 2022 Operating and Financial Results     March 7, 2023


Owners

Source: p. 10
CompanyInterestOwnership
Ero Copper Corp. 99.6 % Indirect
Mineração Caraíba S.A. (operator) 100 % Direct
Ownership Tree
Ero Copper Corp. is a Vancouver-based copper mining company whose primary asset is a 99.6% interest in Mineração Caraíba S.A. (“Mineração Caraíba” or “MCSA”), a Brazilian mining company operating in the Curaçá Valley, northeastern Bahia State, Brazil. Within the mining concessions, MCSA holds 100% legal and beneficial ownership.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Magmatic


Summary:

The MCSA Mining Complex’s active mining and development projects are within the Curaçá Valley mafic-ultramafic complex, located within the Curaçá high-grade metamorphic gneissic terrain, a part of the Salvador-Curaçá orogen, a northern extension of the Atlantic Coast Granulite Belt in the São Francisco Craton.

Given uncertainties with the most likely deposit models for the Curaçá valley copper deposits, it is quite possible that previously undocumented processes were responsible for mineralization and a new deposit model is required. This might be a variant of the magmatic sulphide or IOCG models, a hybrid model with magmatic and hydrothermal processes, or something different.

Mafic-ultramafic units occur within the charnockite and biotite gneisses as lenses or sills with thicknesses generally less than 50m. The mafic-ultramafic lenses are composed of hypersthenite (pyroxenite), norite, gabbro-norite, gabbro and rarely, anorthosite that are less than 1m thick. Extensive pyroxenite has been described within the mafic-ultramafic lenses at the Caraíba Mine and the Vermelhos UG Mine, whereas to date pyroxenite reportedly occurs as a minor part of the mafic-ultramafic lenses at the R22W Mine, Surubim OP Mine and the Angicos Mine. Biotite schist and amphibolite occur in shear zones, in contact with granite, or as isolated lenses within gneiss.

Known copper deposits are hosted within the Rio Curaçá and Tanque Novo sequences, differentiated by metamo ........


Mining Methods

  • Sub-level open stoping (SLOS)
  • Vertical Crater Retreat
  • Cemented backfill
  • Paste backfill


Summary:

The regional MCSA operations include fully integrated processing operations and, currently, two active producing mining locations within the Curaçá Valley. The active operations include the Caraíba Complex (comprised of the underground Pilar Mine, integrated Caraíba Mill and the inactive solvent extraction electrowinning plant (“SX/EW Plant”)), and the underground Vermelhos Mine. The past producing operations include the open pit mines of R22 Mine, Surubim OP Mine as well as the historic mines of Angicos Mine and Suçuarana Mine”. Collectively the active and pastproducing mines comprise the “MCSA Mining Complex”.

Production from the Pilar UG and the Vermelhos UG mines currently serves as feed for the Caraíba Mill. Ongoing development and exploration activities include: the continued advancement of the primary ramp and associated infrastructure of the Pilar and Vermelhos underground mines in support of mine life extensions, including the delivery of the Deepening Extension Project, as well as associated plant and site refurbishments undertaken in support of the LOM plan and during the normal course of business.

Current operational rates for the Pilar UG Mine and the Vermelhos UG/Mine are approximately 4,000 tonnes per day and 2,200 tonnes per day, respectively. Production volumes from underground mining operations of the Pilar Mine are expected to increase after the completion of a new 4.5m external shaft from surface.

The Pilar UG Mine has prev ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.

^ Guidance / Forecast.

Production:

CommodityUnits202220212020201920182017
Copper M lbs  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required6744
All production numbers are expressed as metal in concentrate. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required2,424,592 t2,257,917 t1.8 Mt
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required2.46 Mt2.3 Mt1.8 Mt
Daily processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Annual processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Total tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required3,254,964 t5,933,178 t4,474,056 t
^ Guidance / Forecast.
Subscription required - Subscription is required.

Reserves at September 30, 2021:
Mineral resources cut-off grade for underground deposits is 0.51% Cu, for open pit is a 0.21% Cu.

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven Total 24,857 kt Copper 0.92 % 228.8 kt
Probable Total 34,423 kt Copper 1.1 % 378.3 kt
Proven & Probable Total 59,280 kt Copper 1.02 % 607.1 kt
Measured Total 47,132 kt Copper 1.27 % 596.7 kt
Indicated Total 57,568 kt Copper 1.08 % 624.4 kt
Measured & Indicated Total 104,700 kt Copper 1.17 % 1,221 kt
Inferred Total 43,331 kt Copper 1.09 % 473.4 kt

Commodity Production Costs:

CommodityUnits202220212020201920182017
Credits (by-product) Copper USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -0.11 / lb   -0.09 / lb  
C1 cash costs Copper USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 1.19 / lb†   1.45 / lb†  
^ Guidance / Forecast.
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units20212020201920182017
OP mining costs ($/t mined) BRL 10.511.715.412.7
UG mining costs ($/t mined) BRL  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Processing costs ($/t milled) BRL  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units202220212020201920182017
Capital expenditures (planned) M USD  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 184.7   115.4  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 66.1   12.9  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 12   -19.7  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 10.1   -1.5  
EBITDA M USD 52.9  
Operating Cash Flow M USD 21.2  
Subscription required - Subscription is required



Heavy Mobile Equipment as of October 1, 2020:
HME TypeSizeQuantityStatusLeased or
Contractor
Backhoe ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required Proposed Leased
....................... Subscription required ....................... Subscription required Proposed Leased
....................... Subscription required ....................... Subscription required Proposed
Grader ....................... Subscription required Existing
Jumbo ....................... Subscription required Existing
Loader ....................... Subscription required Existing
Load-Haul-Dump (LHD) ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required Proposed Leased
Truck (haul) ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Truck (underground) ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required Proposed Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 28, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 28, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 28, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 28, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 28, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 28, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 28, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2021
Subscription required Subscription required Subscription required 2020
Subscription required Subscription required Subscription required 2019
Subscription required Subscription required Subscription required 2018
Subscription required Subscription required Subscription required 2017

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Annual Report 2018
Management Discussion & Analysis 2018
Technical Report 2018
Annual Information Form 2017
Annual Report 2017
Technical Report 2017
Subscription required - Subscription is required.

News:

NewsDate
Ero Copper Reports Fourth Quarter and Full Year 2022 Operating and Financial Results March 7, 2023

Subscription required - Subscription is required.

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