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Mexico
Creston Mascota Mine

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 Location:
222 km W from Chihuahua, Chihuahua, Mexico

  Regional Office:
Ave.Mirador #7724. Colinas del Valle
Chihuahua
Chihuahua, Mexico
C.P.31217
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Processing
  • Heap leach
  • Carbon in column (CIC)
  • Carbon adsorption-desorption-recovery (ADR)
  • Cyanide (reagent)
Mine Life2020
Creston Mascota deposit is a stand-alone pit and heap leach operation that is a satellite of Pinos Altos operations.
Latest NewsAgnico Eagle Reports Second Quarter 2020 Results - Successful Ramp Up Of Operations Post Temporary Covid-19 Shutdowns; 2020 Production Guidance Increased...     July 29, 2020


Owners & OPERATOR

 
CompanyInterestOwnership
Agnico Eagle Mines Ltd. 100 % Indirect
Agnico Eagle Mexico, S.A. de C.V. (operator) 100 % Direct

Deposit Type

  • Breccia pipe / Stockwork


Summary:

The host rocks at Creston-Mascota are the Frijolar Andesite and the Victoria Ignimbrite units. Generally shallowly west-dipping quartz-calcite veins and stockwork zones of mineralization associated with the Creston-Mascota deposit can be followed on the surface over a distance of 1000 metres north-south and vary in thickness from 4 to 30 metres. The West Fault, first recognized during the 2008 drilling program at Creston-Mascota, is a sub-vertical, North-South striking feature against which the Creston-Mascota deposit terminates in the down-dip direction. It has been interpreted as a mainly post-mineral fault that offsets the Creston-Mascota deposit from its down-dip continuation, thought to be represented by mineralization observed at the Bravo mine/Carola prospect, located immediately southwest of Creston-Mascota. In the mineralized zone at Creston-Mascota, quartz-calcite veining is developed in the form of stockwork or as breccia (replacement and open space filling breccia sub-unit). In some locations, moderate stockwork veining, zones of silicification, and anomalous gold values also occur along the West Fault, whereas elsewhere, the West Fault consists only of nonmineralized clay gouge and breccia.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Creston Mascota is an open-pit, heap-leach facility 7 kilometres northwest of the Santo Niño pit. It mines an average of 5,500 tonnes of ore per day and employs the same surface mining method as Pinos Altos. Mining is by conventional open pit methods, using shovels and trucks.


Crushing and Grinding


Processing

  • Heap leach
  • Carbon in column (CIC)
  • Carbon adsorption-desorption-recovery (ADR)
  • Cyanide (reagent)

Flow Sheet: Subscription required

Summary:

All the Creston Mascota ore is processed using heap-leaching. The 4,000-tonne-per-day heap leach facility at Creston Mascota is similar to the Pinos Altos facility, but the precious metals are recovered by a small carbon column circuit. The gold and silver is stripped from the carbon in the Pinos Altos plant and then poured as doré bars, with expected ultimate gold recoveries of 65% and 16% for silver when leaching is completed.

Recoveries & Grades:

CommodityParameter202020192018201720162015201420132012
Gold Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Head Grade, g/t 2.77 ^1.871.031.231.11.341.31.431.74
Silver Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Head Grade, g/t 13.211.21216.9
^ Guidance / Forecast.
Subscription required - Subscription is required.

Production:

CommodityUnits202020192018201720162015
Gold oz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required48,38447,29654,703
Silver koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as payable metal. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required2 Mt
Daily ore mining rate  ......  Subscription required  ......  Subscription required  ......  Subscription required5,520 t
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required2,119,245 t2,098,812 t1,793,800 t
Daily processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required4,000 t
Daily processing rate  ......  Subscription required  ......  Subscription required  ......  Subscription required5,790 t
^ Guidance / Forecast.
Subscription required - Subscription is required.

Reserves at December 31, 2018:

CategoryTonnage CommodityGradeContained Metal
Probable 1,434 kt Gold 1.77 g/t 82 koz
Probable 1,434 kt Silver 40.89 g/t 1,886 koz
Indicated 1,345 kt Gold 0.65 g/t 28 koz
Indicated 1,345 kt Silver 8.78 g/t 380 koz
Inferred 386 kt Gold 1.02 g/t 13 koz
Inferred 386 kt Silver 9.91 g/t 123 koz

Commodity Production Costs:

CommodityUnits2019201820172016201520142013
Credits (by-product) Gold USD  ......  Subscription required  ......  Subscription required -94 / oz -72 / oz -44 / oz -33 / oz -25 / oz
Cash costs Gold USD  ......  Subscription required  ......  Subscription required 651 / oz 578 / oz 480 / oz 585 / oz
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required 669 / oz 588 / oz 474 / oz 611 / oz 534 / oz
Total cash costs Gold USD  ......  Subscription required†  ......  Subscription required† 575 / oz† 516 / oz† 430 / oz† 578 / oz† 509 / oz†
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units2019201820172016201520142013
Total operating costs ($/t milled) USD 33271513121616

Financials:

Units201820172016201520142013
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 4.2   10.9  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 66.5   59.6  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 22.3   21.9   14.8  
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 6, 2019
....................... Subscription required ....................... Subscription required Subscription required May 6, 2019
....................... Subscription required ....................... Subscription required Subscription required May 6, 2019
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2018
Subscription required 2017
Subscription required 2016
Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
Annual Information Form 2017
Annual Report 2017
Press Release 2017
Annual Report 2016
Form 40-F 2016
Annual Report 2015
Annual Report 2014
Technical Report 2008
Subscription required - Subscription is required.

News:

NewsDate
Agnico Eagle Reports Second Quarter 2020 Results - Successful Ramp Up Of Operations Post Temporary Covid-19 Shutdowns; 2020 Production Guidance Increased... July 29, 2020

Aerial view:

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