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Chile
Candelaria Mine (Candelaria Complex)

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 Location:
17 km S from Copiapó, Chile

  Address:
Inside Ojancos Bridge Km. 9
Tierra Amarilla
Chile
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
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  • Reserves
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  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Copper
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
  • Sub-level open stoping (SLOS)
Production Start...
Mine Life24 years (as of Jan 1, 2022)
Since the mine has achieved its production objective of 14,000 tonnes per day, studies are continuing both Candelaria Underground North and South sectors with a view to further increase production levels. A Feasibility Study for Candelaria Underground Expansion was completed in 2020 and updated in 2021. The expansion was intended to increase total throughput from Candelaria underground to 26,000 tonnes per day. The expansion project is currently under basic engineering stage and will be further evaluated once the changes in the Chilean tax regime and mining royalties are finalized.


Owners

Source: p. 78
CompanyInterestOwnership
Sumitomo Corp. 4 % Indirect
Sumitomo Metal Mining Co., Ltd 16 % Indirect
Lundin Mining Corp. 80 % Indirect
As part of its Candelaria segment, the Company owns 80% of Compañia Contractual Minera Candelaria S.A. and Compañia Contractual Minera Ojos del Salado S.A.’s copper mining operations and supporting infrastructure in Chile. The remaining 20% ownership stake is held by Sumitomo Metal Mining Co., Ltd. and Sumitomo Corporation.

Contractors

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Deposit Type

  • IOCG
  • Breccia pipe / Stockwork
  • Vein / narrow vein
  • Skarn
  • Manto


Summary:

Deposit Types
The copper-gold sulphide mineralization present at the Candelaria Copper Mining Complex is generally referred to as iron oxide copper gold (IOCG). Depending on lithology and the structural setting, the polymetallic sulphide mineralization can occur as veins, hydrothermal breccias, replacement mantos, and calcic skarns (Sillitoe, 2003).

The Candelaria IOCG deposit lies within the metamorphic aureole of the Lower Cretaceous magmatic arc plutonic complex that is located within the Candelaria-Punta del Cobre district, Atacama Region, northern Chile. IOCG deposits are primarily defined by their elevated magnetite and / or hematite with elevated copper and gold contents (Sillitoe, 2003). The IOCG belt located in the Coastal Cordillera of northern Chile and southern Peru is part of a volcano-plutonic arc of Jurassic to Early Cretaceous age. The arc is characterized by voluminous tholeiitic to calc-alkaline plutonic complexes of gabbro to granodiorite composition and primitive, mantle-derived parentage. Major arc-parallel fault systems developed in response to extension and transtension induced by subduction roll-back at the retreating convergent margin.

Most of the sulphide mineralization at Candelaria and Ojos del Salado occurs in breccias, stockwork veinlets, and disseminations in andesite, especially where the rocks are strongly foliated. Highergrade copper mineralization is controlled by stratigraphy in mantos and by faults, trending pre ........


Mining Methods

  • Truck & Shovel / Loader
  • Sub-level open stoping (SLOS)


Summary:

Minera Candelaria consists of the Candelaria Open Pit, La Española Open Pit and the Candelaria Underground mines.

The Candelaria and the Minera Ojos del Salado operations are located close to each other, resulting in shared surface infrastructure such as the concentrator and tailings dam, as well as a common management structure. The ore from the Candelaria Open Pit, Candelaria Underground is processed at the Candelaria processing plant.

The open pits will operate with an overall mining rate of approximately 294,000 tonnes per day for the next 10 years. As the final Candelaria Phase 13 waste stripping is completed the overall mining rate will decline. A stockpile strategy has been developed to maximize the grade of material going to the processing facility. Direct milling ore will average 0.61% copper from Candelaria and 0.43% copper from Española. A lower grade stockpile ore will be recovered to meet plan capacity as required. The mine operates five electric shovels and five hydraulic shovels, and will require a fleet of 55 haulage trucks, seven production drills, and a fleet of support equipment.

The Candelaria Underground mine has been producing a steady state production rate of up to 14,000 tonnes of ore per day by 2022 as per the LOM plan. The average LOM grade is 0.78% copper.

Open Pit Mine Design
The Candelaria open pit was designed to be mined in several phases of development. As of December 2022, four phases of develop ........


Crushing and Grinding
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Processing

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Summary:

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Combined production numbers are reported under Candelaria Complex

All production numbers are expressed as metal in concentrate.

Operational Metrics:

Metrics20222021202020192018
Daily processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required75,000 t75,000 t
Annual processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required27 Mt
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Reserves at December 31, 2022:
OP Mineral Resource estimates is reported with cut-off grades of 0.15% copper.
Underground Mineral Resources are estimated at a cut-off grade of 0.45% copper.
Mineral Reserves for the Candelaria open pit and underground for the Candelaria property are estimated at cut-off grades of 0.16% and 0.50% copper, respectively.

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven Stockpiles 77,830 kt Copper 0.28 % 220 kt
Proven Stockpiles 77,830 kt Gold 0.09 g/t 214 koz
Proven Stockpiles 77,830 kt Silver 1.47 g/t 3,686 koz
Proven & Probable In-Situ (OP) 361,661 kt Copper 0.44 % 1,596 kt
Proven & Probable In-Situ (UG) 131,492 kt Copper 0.78 % 1,032 kt
Proven & Probable In-Situ (OP) 361,661 kt Gold 0.11 g/t 1,223 koz
Proven & Probable In-Situ (UG) 131,492 kt Gold 0.18 g/t 751 koz
Proven & Probable In-Situ (OP) 361,661 kt Silver 1.47 g/t 17,064 koz
Proven & Probable In-Situ (UG) 131,492 kt Silver 3.2 g/t 13,531 koz
Measured Stockpiles 77,830 kt Copper 0.28 % 220 kt
Measured Stockpiles 77,830 kt Gold 0.09 g/t 214 koz
Measured Stockpiles 77,830 kt Silver 1.47 g/t 3,686 koz
Measured & Indicated In-Situ (OP) 478,073 kt Copper 0.43 % 2,047 kt
Measured & Indicated In-Situ (UG) 416,566 kt Copper 0.8 % 3,352 kt
Measured & Indicated In-Situ (OP) 478,073 kt Gold 0.1 g/t 1,503 koz
Measured & Indicated In-Situ (UG) 478,073 kt Gold 0.18 g/t 2,393 koz
Measured & Indicated In-Situ (OP) 478,073 kt Silver 1.52 g/t 23,332 koz
Measured & Indicated In-Situ (UG) 478,073 kt Silver 3.31 g/t 44,296 koz
Inferred In-Situ (OP) 5,556 kt Copper 0.23 % 13 kt
Inferred In-Situ (UG) 38,373 kt Copper 0.75 % 288 kt
Inferred In-Situ (OP) 5,556 kt Gold 0.05 g/t 9 koz
Inferred In-Situ (UG) 38,373 kt Gold 0.17 g/t 208 koz
Inferred In-Situ (OP) 5,556 kt Silver 0.82 g/t 146 koz
Inferred In-Situ (UG) 38,373 kt Silver 2.44 g/t 3,011 koz


Water Supply
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Heavy Mobile Equipment as of December 31, 2022:
HME TypeModelSizeQuantityStatusLeased or
Contractor
Dozer ....................... Subscription required ....................... Subscription required Proposed Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Dozer (crawler) ....................... Subscription required ....................... Subscription required Existing Leased
Dozer (crawler) ....................... Subscription required ....................... Subscription required Existing Leased
Dozer (rubber tire) ....................... Subscription required ....................... Subscription required Existing Leased
Drill ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Drill ....................... Subscription required ....................... Subscription required Existing Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Drill (blasthole) ....................... Subscription required ....................... Subscription required Existing Leased
Excavator ....................... Subscription required ....................... Subscription required Existing Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Excavator ....................... Subscription required 12 cu. m ....................... Subscription required Existing Leased
Grader ....................... Subscription required ....................... Subscription required Existing Leased
Grader ....................... Subscription required ....................... Subscription required Existing Leased
Jumbo ....................... Subscription required Existing Leased
Loader ....................... Subscription required ....................... Subscription required Existing Leased
Loader ....................... Subscription required 9 cu. m ....................... Subscription required Existing Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Loader (FEL) ....................... Subscription required Existing Leased
Load-Haul-Dump (LHD) ....................... Subscription required Existing Leased
Load-Haul-Dump (LHD) 17 t ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Shovel (hydraulic) ....................... Subscription required ....................... Subscription required Existing Leased
Shovel (rope) ....................... Subscription required 43 cu. m ....................... Subscription required Existing Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Truck (haul) ....................... Subscription required 237 t ....................... Subscription required Existing Leased
Truck (haul) ....................... Subscription required ....................... Subscription required Existing Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Truck (underground) ....................... Subscription required 60 t ....................... Subscription required Existing
Truck (underground) ....................... Subscription required Existing Leased
Truck (water) ....................... Subscription required ....................... Subscription required Existing Leased
Truck (water) ....................... Subscription required ....................... Subscription required Existing Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Feb 27, 2023
....................... Subscription required ....................... Subscription required Subscription required Feb 27, 2023
....................... Subscription required ....................... Subscription required Subscription required Feb 27, 2023
....................... Subscription required ....................... Subscription required Subscription required Feb 27, 2023
....................... Subscription required ....................... Subscription required Subscription required Feb 27, 2023
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Annual Information Form 2023
Annual Information Form 2022
Management Discussion & Analysis 2022
Other 2022
Technical Report 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Management Discussion & Analysis 2018
Technical Report 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Technical Report 2017
Annual Information Form 2016
Management Discussion & Analysis 2016
Annual Information Form 2015
Form 10-K 2013
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