Ecuador

Mirador Mine

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Categories

Overview

Mine TypeOpen Pit
StatusActive
Commodities
  • Copper
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Production Start... Lock
Mine Life... Lock
SnapshotEcuador’s first large-scale open pit mining operation Mirador copper mine, in which Chinese copper smelter Tongling Non-ferrous owns a 70% stake, has been commissioned as of July 18, 2019.

The Phase II of the project is expected to process 46.2 million tons of ore annually, with a processing capacity of 20 million tons for beneficiation. After reaching the production capacity, the annual production of copper concentrate is expected to reach 800,000 tons, equivalent to “rebuilding” a Mirador Copper Mine in terms of scale.

Mine operations data has not been publicly available since then.

Owners

SourceSource
The mine is held by Quito-based company EcuaCorriente SA (ECSA) which is part of a consortium called CRCC-Tongguan between two Chinese companies: Tongling Nonferrous Metals Group Holdings and China Railway Construction Corporation Ltd (CRRC) which also control the operating company China Railway Construction Copper Crown Investment Co Ltd.

Contractors

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Deposit type

  • Porphyry

Summary:

The host rock, alteration, and mineralization at the Mirador deposit are characteristic of a calc-alkaline porphyry copper system. Copper deposits of a similar style are widespread in the Cordilleras of North and South America.

Most of the Mirador mineralization is exposed as weathered, leached laterite in the numerous drill trail and road exposures. Unevenly developed zones of supergene copper (and possibly silver) enrichment lie beneath a leached, lateritic “cap” with a relatively flat lower boundary. Thus this leached zone is thickest under ridge crests and nonexistent in any significant drainage bottom. Primary and supergene mineralization are only preserved in creek bottom outcrops, where the drainages have cut down through the overlying laterite.

The copper-gold-silver mineralization of the Mirador deposit is present mostly as disseminations and fine fracture-fillings of chalcopyrite, secondary chalcocite, and pyrite. Gold occurs as fine inclusions in chalcopyrite and pyrite, as well as native. Molybdenite is present in systems of early-stage quartz veins that have a preferred east-west orientation. These veins occur as stockwork in both Zamora granite and early porphyry dikes.

The sequence of mineral deposition at Mirador has been divided into early-stage molybdenum, early-stage copper ± gold, and late-stage copper-gold events, with a final weak polymetallic vein stage.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

CommodityProductUnitsAvg. Annual (Projected)LOM (Projected)
Copper Payable metal M lbs 2,208
Copper Concentrate kt 2053,395
Gold Payable metal koz 536
Silver Payable metal koz 6,365
Copper Metal in concentrate M lbs 137
Gold Metal in concentrate koz 34
Silver Metal in concentrate koz 394
 * Projected daily production according to 2008 company report.

Production Costs

Commodity production costs have not been reported.

Heavy Mobile Equipment

Fleet data has not been reported.

Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 29, 2024
....................... Subscription required ....................... Subscription required Subscription required Jan 29, 2024

Total WorkforceYear
...... Subscription required 2021

Aerial view:

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