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Mexico

Boleo Mine

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Boleo Mine

Location: 60 km E from San Ignacio, Mexico, Mexico

Address:

Tramo Santa Rosalia A San Ignacio Km 5. 5
Santa Rosalia
Baja California Sur, Mexico
23920

Contacts:

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Categories

Summary

Mine TypeUnderground
StatusActive
Commodities
  • Copper
  • Cobalt
  • Zinc
Mining Method
  • Shortwall mining
  • Strip mining (roll-over)
Production Start... Lock
Mine Life... Lock
SnapshotThe Boleo copper-cobalt mine includes a complex processing plant that extracts cobalt as a byproduct of its copper extraction.

April 29, 2025 - El Boleo Mine has initiated the process of submitting an Environmental Impact Statement (EIA) to the Ministry of Environment and Natural Resources (Semarnat) to obtain permission to expand the mining area on the company's property.

The company currently holds a 13-year concession and therefore intends to expand the area of mining minerals (such as copper, cobalt and zinc) from more than 446 hectares to more than 757 hectares, according to a document filed with Semarnat.

The project envisages open-pit mining for 13 years of operation, including the stages of site preparation, mining, closure and liquidation, in parallel and in stages.

May, 2025 - No decision has been made yet.

Owners

SourceSource
CompanyInterestOwnership
Camrova Resources Inc. 6.71 % Indirect
Korea Mine Rehabilitation and Mineral Resources Corp. (KOMIR 88.06 % Indirect
Minera y Metalúrgica del Boleo, S.A. P.I. de C.V. (operator) 100 % Direct
Korea Mine Rehabilitation and Mineral Resources Corp. (KOMIR) held a 88.06% equity interest in the Boleo project.

Camrova owns 6.71 % of the Boleo copper mine in Mexico.

Minera y Metalúrgica del Boleo, S.A. P.I. de C.V. (MMB) is a consolidated subsidiary of the KOMIR and is the operator of the Boleo project.

January 2025 - KOMIR intends to sell its 88.06% stake in the Boleo mine. KOMIR's decision to sell aligns with its strategy to offload overseas mining assets while focusing on securing critical mineral supply chains.

The KOMIR has issued is in separate discussions with foreign developers about the potential sale. Under shareholder agreements, the remaining stakeholders in MMB, including the Korean Boleo Corporation (KBC) and Canada's Camrova Resources, have tag-along rights, allowing them to join the sale.

KBC is a company established by LS MnM, Hyundai Steel, SK Networks, Lotte Energy Materials, and KOMIR to participate in the Boleo project.

SourceSource

Deposit type

  • Manto

Summary:

The Boleo deposits occur within a Miocene rift zone basin and consist of a succession of fine to coarse clastic sedimentary rocks characterized by a number of coarsening upward cycles of deltaic deposited sediments. Faulting is common throughout the district.

The dominant faults are steeply dipping normal faults striking northwest and downthrown to the west by up to 200 meters (m). These offsets, combined with the easterly dip of the mantos, yield a stepwise configuration of the mineralized beds. Major faults are typically separated horizontally by several hundreds of meters, although lesser faults are common and are more closely spaced. The extensive faulting, with vertical offsets ranging from less than a meter to tens of meters, divides the project area into relatively small, irregularly-shaped blocks. The ground immediately adjacent
to fault zones is generally observed to be degraded, with little or no structural strength. The surface topography is highly variable and= consists of flat-topped mesa structures that are deeply incised by rugged, steep-sided arroyos. The depth of cover varies from zero to several hundred meters.

Copper-cobalt-zinc mineralization occurs throughout the Boleo District within clay-rich horizons or beds known as “mantos.” The mantos correspond to the lower units of similar stratigraphic sequences occurring in a repeated series. Each sequence consists of a general coarsening of the sediments from the base to the top. The ore-bearing mantos are the lowest beds in each sequence and consist of a 1-m-thick basal laminated mud horizon overlain by mineralized slump breccias up to 20 m thick. The ore zones are overlain by progressively coarser material of tuffaceous claystone, siltstone, sandstone, pebbly sandstone, and eventually cobble- to bouldersized conglomerates.

The contact between the mantos and floor rocks is sharp; however, the contact with the roof rocks is more traditional. Mineralization is finely disseminated in the breccias with the richest material occurring in the laminated basal section of the mantos. The Boleo District has been extensively mined by underground methods for nearly a century, and much of this early mining extracted only the very high-grade material within the basal part of the manto and backfilled the stopes with the lower grade breccias, containing copper grades of 1% to 2%, or more.

Reserves

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Mining Methods

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Heavy Mobile Equipment

Fleet data has not been reported.

Comminution

Crushers and Mills

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Processing

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Commodity Production

CommodityProductUnits2024202320222021202020192018201720162015
Copper Cathode t  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe13,64019,43819,90014,2847,319
Cobalt Metal t 226419
Zinc Sulphate t 4521,444

Operational metrics

Metrics20232022202120182016
Annual production capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe
Annual production capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe
Annual processing capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe
Daily processing capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe
Ore tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe2,813,000 t1.4 Mt
Tonnes processed  ....  Subscribe  ....  Subscribe  ....  Subscribe2,813,000 t

Production Costs

Commodity production costs have not been reported.

Mine Financials

Units20232022
Revenue M KRW  ....  Subscribe  ....  Subscribe
After-tax Income M KRW  ....  Subscribe  ....  Subscribe

Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 5, 2025
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Workforce

Total WorkforceYear
...... Subscription required 2024
...... Subscription required 2021

Aerial view:

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