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Mexico
Herradura Mine

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 Location:
81 km NW from Caborca, Sonora, Mexico
  Regional Office:
Callejón Sin Nombre No. 209 Oeste, Col. Centro
Caborca
Sonora, Mexico
83600
Phone  ...  Subscription required
Fax52-637-372-2044
EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • 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
  • Leaching plant / circuit
  • Merrill–Crowe
  • Cyanide (reagent)
Mine Life13.2 years (as of Jan 1, 2019)
Herradura is one of Mexico’s largest open pit gold mines.

Owners

 
CompanyInterestOwnership
Fresnillo plc. 100 % Indirect
Deposit Type

  • Vein / narrow vein
  • Orogenic

Summary:

La Herradura deposit is located in the Sonora state in northwestern Mexico, approximately 80 km northwest of the town of Caborca.

Gold rich veins are restricted to the Proterozoic rocks which consist of biotite-feldspar-quartz and quartz-feldspar gneisses of sedimentary and plutonic origin. The hydrothermal system is structurally controlled and the higher grade mineralization occurs in quartz-sulfide veins filling tensional fractures. Quartz-sericite-albite alteration is widespread in the core of the deposit and grades to propylitic in the outer parts where the gneisses are more biotite rich.

Mining Methods

  • Truck & Shovel / Loader

Summary:

Processing Technologies

  • Heap leach
  • Leaching plant / circuit
  • Merrill–Crowe
  • Cyanide (reagent)

Source: Subscription required

Summary:

Herradura is open pit mine, heap leach and Merrill Crowe plants; dynamic leaching plant (DLP).

Recoveries & Grades:

CommodityParameter2018201720162015201420132012
Gold Head Grade, g/t 0.760.680.710.730.720.610.57
Silver Head Grade, g/t 2.71.11.21.21.21.11.2

Production:

CommodityUnits2018201720162015201420132012
Gold oz  ......  Subscription required473,638520,366398,866265,564264,562314,547
Silver oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics20182017201620152014201320122011
Total tonnes mined  ......  Subscription required  ......  Subscription required118,841 kt117,033 kt129,797 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required25,159 kt22,875 kt22,305 kt
Tonnes processed  ......  Subscription required  ......  Subscription required25,158,600 t22,875,421 t22,305,133 t14,363,315 t24,641,053 t21,020,356 t
Subscription required - Subscription is required.

Reserves at December 31, 2018:

CategoryTonnage CommodityGradeContained Metal
Proven 169,723 kt Gold 0.8 g/t 4,341 koz
Probable 122,556 kt Gold 0.77 g/t 3,034 koz
Proven & Probable 292,279 kt Gold 0.78 g/t 7,375 koz
Measured 210,358 kt Gold 0.8 g/t 5,433 koz
Indicated 165,574 kt Gold 0.79 g/t 4,223 koz
Measured & Indicated 375,932 kt Gold 0.8 g/t 9,657 koz
Inferred 20,700 kt Gold 0.87 g/t 582 koz

Commodity Production Costs:

CommodityUnits20182017201620152014
Cash costs Gold USD  ......  Subscription required† 492.9 / oz† 470.72 / oz† 473 / oz† 465 / oz†
All-in sustaining costs (AISC) Gold USD  ......  Subscription required† 807.66 / oz† 731.69 / oz† 888 / oz† 862 / oz†
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units201820172016201520142013
Total operating costs ($/t milled) USD 13.287.78.79.38.4

Financials:

Units20182017201620152014
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 119.7   63.1  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 445.1   342.7  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 219   170.3  
Subscription required - Subscription is required

Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 27, 2019
....................... Subscription required ....................... Subscription required Subscription required May 27, 2019
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2018
Subscription required Subscription required Subscription required 2017
Subscription required Subscription required Subscription required 2016
Subscription required Subscription required Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2018
Annual Report 2017
Annual Report 2016
Annual Report 2015
Corporate Presentation 2015
Annual Report 2014
Year-end Mineral Reserves 2014
Other 2009
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Aerial view:

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