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Mexico
Boleo Mine

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

  Address:
Tramo Santa Rosalia A San Ignacio Km 5. 5
Santa Rosalia
Baja California Sur, Mexico
23920
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit / Underground
Commodities
  • Copper
  • Cobalt
  • Zinc
Mining Method
  • Truck & Shovel / Loader
  • Continuous
  • Room-and-pillar
Processing
  • Sulfuric acid (reagent)
  • Counter current decantation (CCD)
  • Agitated tank (VAT) leaching
  • Direct solvent extraction (DSX)
  • Solvent Extraction & Electrowinning
Mine Life2034
Latest NewsCamrova Resources Inc. Signs Asset Purchase Agreement to Acquire Las Vacas Flotation Plant in Chile     February 14, 2020


Owners

 
CompanyInterestOwnership
Camrova Resources Inc. 7.3 % Indirect
Korea Resources Corp. 90 % Indirect
Minera y Metalúrgica del Boleo, S.A. P.I. de C.V. 100 % Direct

Deposit Type

  • Breccia pipe / Stockwork
  • Manto


Summary:

The deposit lies within the late Miocene aged El Boleo Formation within fine to coarse clastic sedimentary rocks that were deposited in the late Miocene in deltas and near-shore shallow marine basins.

The deposit, which occurs in Boleo formation, consists of several mineralized groups called “Mantos” (manto is a specific Spanish term used in mining parlance for mineralized layer or stratum). In general, each mantos is distinct in terms of copper-cobalt ratio and relative zinc, manganese and carbonate concentrations. Mineralization is finely disseminated in the slump breccias over up to 20m thick intervals.


Mining Methods

  • Truck & Shovel / Loader
  • Continuous
  • Room-and-pillar


Summary:

The project is an underground and surface mining operation to provide run-of-mine ore to a fully integrated hydrometallurgical facility. Integrated underground mining which comprise short wall and room and pillar method using continuous miners along with small cuts open mining techniques are to be employed. The mine plan will be continuously optimized on the basis of resource update by additional drilling and operational condition with the aim of maximizing economics.


Crushing and Grinding


Processing

  • Sulfuric acid (reagent)
  • Counter current decantation (CCD)
  • Agitated tank (VAT) leaching
  • Direct solvent extraction (DSX)
  • Solvent Extraction & Electrowinning

Source: Subscription required

Summary:

The Boleo ores are clayey and generally fine grained and easily broken. The milling circuit design takes material from the ROM pad into a static grizzly with the oversize to a primary crusher. The combined product is then scrubbed in copper solvent extraction raffinate. The scrubber product is screened with the oversize sent to a secondary crusher. The combined product goes to the ball mill sump before cycloning. The coarse cyclone product is directed to the ball mill. Milling is conducted in raffinate.

The milled product is heated to a target temperature of 80ºC for atmospheric leaching. Leaching proceeds in two steps: acid, oxidative leaching with manganese dioxide oxidation for leaching of Cu, Zn and Co sulphides and: acid reductive leaching with addition of sulphur dioxide gas to reduce residual manganese dioxides. The reductive leaching of surplus manganese dioxide is essential for maximizing the extraction of cobalt.

The slurry from oxidation and reduction l ........

Recoveries & Grades:

CommodityParameter20192018
Copper Recovery Rate, %  ......  Subscription required  ......  Subscription required
Copper Head Grade, % 0.95
^ Guidance / Forecast.
Subscription required - Subscription is required.

Production:

CommodityProductUnits2019201820162015
Copper Cathode t  ......  Subscription required ^  ......  Subscription required14,2847,319
Cobalt Metal t  ......  Subscription required ^  ......  Subscription required  ......  Subscription required
Zinc Sulphate t  ......  Subscription required ^  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182016
Ore tonnes mined  ......  Subscription required  ......  Subscription required1.4 Mt
^ Guidance / Forecast.
Subscription required - Subscription is required.

Reserves at March 1, 2010:

CategoryTonnage Commodity
Proven & Probable 85 Mt Copper
Proven & Probable 85 Mt Cobalt
Proven & Probable 85 Mt Zinc
Measured & Indicated 265 Mt Copper
Measured & Indicated 265 Mt Cobalt
Measured & Indicated 265 Mt Zinc
Inferred 165 Mt Copper
Inferred 165 Mt Cobalt
Inferred 165 Mt Zinc

Financials:

Units20172016
Capital expenditures (planned) M USD  ......  Subscription required
Revenue M USD  ......  Subscription required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 22, 2020
....................... Subscription required ....................... Subscription required Subscription required Jan 22, 2020
....................... Subscription required ....................... Subscription required Subscription required Jan 22, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
Management Discussion & Analysis 2016
Management Discussion & Analysis 2015
Press Release 2012
Other 2009
Subscription required - Subscription is required.

News:

NewsDate
Camrova Resources Inc. Signs Asset Purchase Agreement to Acquire Las Vacas Flotation Plant in Chile February 14, 2020
Camrova Resources Inc. Announces Update on Boleo Project and Status of the Chilean Acquisition May 30, 2019
Camrova Resources Inc.: Boleo Project Update February 19, 2019

Aerial view:

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