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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
Fax+52-637-373-2204
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 Life11.7 years (as of Jan 1, 2019)
Herradura is one of Mexico’s largest open pit gold mines.

Owners & OPERATOR

Source: p. 52
CompanyInterestOwnership
Fresnillo plc. 100 % Indirect
Minera Penmont, S. de R.L. de C.V (operator) 100 % Direct
Deposit Type

  • Vein / narrow vein
  • Hydrothermal

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:

Crushing and Grinding

Processing

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

Source: Subscription required

Summary:

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

Recoveries & Grades:

CommodityParameter20192018201720162015201420132012
Gold Head Grade, g/t 0.80.760.680.710.730.720.610.57
Silver Head Grade, g/t 3.12.71.11.21.21.21.11.2

Production:

CommodityUnits201920182017201620152014
Gold oz  ......  Subscription required  ......  Subscription required473,638520,366398,866265,564
Silver oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics2019201820172016201520142011
Total tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required118,841 kt117,033 kt129,797 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required25,159 kt22,875 kt22,305 kt
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required25,158,600 t22,875,421 t22,305,133 t21,020,356 t
Subscription required - Subscription is required.

Reserves at May 31, 2019:

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 267,492 kt Gold 0.78 g/t 6,679 koz
Measured 230,017 kt Gold 0.8 g/t 5,916 koz
Indicated 143,330 kt Gold 0.82 g/t 3,779 koz
Measured & Indicated 373,350 kt Gold 0.81 g/t 9,695 koz
Inferred 3,623 kt Gold 0.89 g/t 105 koz

Commodity Production Costs:

CommodityUnits201920182017201620152014
Cash costs Gold USD  ......  Subscription required†  ......  Subscription required† 492.9 / oz† 470.72 / oz† 473 / oz† 465 / oz†
All-in sustaining costs (AISC) Gold USD  ......  Subscription required†  ......  Subscription required† 807.66 / oz† 731.69 / oz† 888 / oz† 862 / oz†
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units2019201820172016201520142013
Total operating costs ($/t milled) USD 18.113.287.78.79.38.4

Financials:

Units201920182017201620152014
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 119.7   63.1  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 445.1   342.7  
Gross profit M USD  ......  Subscription required  ......  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 Jun 30, 2020
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2019
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 2019
................................... Subscription required 2018
Annual Report 2017
Annual Report 2016
Annual Report 2015
Corporate Presentation 2015
Annual Report 2014
Other 2014
Year-end Mineral Reserves 2014
Other 2009
Subscription required - Subscription is required.

Aerial view:

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