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United States
Morenci Mine

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 Location:
44 km NE from Safford, Arizona, United States

  Address:
4521 U.S. Hwy 191
Greenlee County
Morenci
Arizona, United States
85540
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Copper
  • Molybdenum
Mining Method
  • Truck & Shovel / Loader
Processing
  • Sulfuric acid (reagent)
  • Flotation
  • Heap leach
  • ROM/dump leach
  • Concentrate leach
  • Solvent Extraction & Electrowinning
  • Leaching & Solvent Extraction (SX)
Mine Life2043
The Morenci open-pit mine produces copper cathode and copper concentrate. In addition to copper, the Morenci mine also produces molybdenum concentrate.


Owners & OPERATOR

Source: p. 9
CompanyInterestOwnership
Freeport-McMoRan Inc. 72 % Indirect
Freeport Minerals Corp. (operator) 72 % Indirect
The Morenci unincorporated joint venture is now owned 72 percent by FCX, 15 percent by Sumitomo Metal Mining Arizona Inc. (SMMAz is owned 80 percent by SMM and 20 percent by Sumitomo Corporation), and 13 percent by SMM Morenci Inc. that is fully owned by SMM.

Deposit Type

  • Porphyry


Summary:

The Morenci mine is a porphyry copper deposit that has oxide, secondary sulfide and primary sulfide mineralization. The predominant oxide copper mineral is chrysocolla. Chalcocite is the most important secondary copper sulfide mineral, with chalcopyrite as the dominant primary copper sulfide.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Morenci’s available mining fleet consists of one hundred and forty-one 236-metric ton haul trucks loaded by 13 shovels with bucket sizes ranging from 47 to 57 cubic meters, which are capable of moving an average of 815,000 metric tons of material per day.


Crushing and Grinding


Processing

  • Sulfuric acid (reagent)
  • Flotation
  • Heap leach
  • ROM/dump leach
  • Concentrate leach
  • Solvent Extraction & Electrowinning
  • Leaching & Solvent Extraction (SX)

Source: Subscription required

Summary:

The Morenci operation consists of two concentrators capable of milling 132,000 metric tons of ore per day, which produce copper and molybdenum concentrate; a 68,000 metric ton-per-day, crushed-ore leach pad and stacking system; a low-grade run-of-mine (ROM) leaching system; four SX plants; and three EW tank houses that produce copper cathode. Total EW tank house capacity is approximately 900 million pounds of copper per year.


Production:

CommodityProductUnits201920182017201620152014
Copper Metal M lbs  ......  Subscription required  ......  Subscription required1,0001,1001,060812
Molybdenum Metal in concentrate M lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Daily mining capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required815,000 t815,000 t815,000 t
Daily milling capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required115,000 t of ore115,000 t of ore50,000 t of ore
Annual production capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required900 M lbs of copper cathode900 M lbs of copper cathode900 M lbs of copper cathode
Subscription required - Subscription is required.

Reserves at December 31, 2019:

CategoryOreTypeTonnage CommodityGradeRecoverable Metal
Proven Heap leach 419 Mt Copper 0.42 %
Proven ROM leach 2,229 Mt Copper 0.16 %
Proven Mill / Sulphide 767 Mt Copper 0.39 %
Proven Mill / Sulphide 767 Mt Molybdenum 0.02 %
Probable Heap leach 119 Mt Copper 0.39 %
Probable ROM leach 729 Mt Copper 0.16 %
Probable Mill / Sulphide 172 Mt Copper 0.36 %
Probable Mill / Sulphide 172 Mt Molybdenum 0.02 %
Proven & Probable Heap leach 538 Mt Copper 0.41 % 3.9 B lbs
Proven & Probable ROM leach 2,958 Mt Copper 0.16 % 4 B lbs
Proven & Probable Mill / Sulphide 939 Mt Copper 0.38 % 6.4 B lbs
Proven & Probable Mill / Sulphide 939 Mt Molybdenum 0.02 % 0.19 B lbs

Financials:

Units2019201820172016201520142013
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 351.4   971.8   867  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 640.3   775.3   645.9  
Subscription required - Subscription is required


Heavy Mobile Equipment as of December 31, 2019:
HME TypeSizeQuantity
Shovel 57 cu. m 13
Truck (haul) 236 t 141

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 4, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 17, 2020
....................... Subscription required ....................... Subscription required Subscription required Mar 4, 2020
....................... Subscription required ....................... Subscription required Subscription required Mar 4, 2020
....................... Subscription required ....................... Subscription required Subscription required Mar 4, 2020
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2017
Subscription required 2015
Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2018
Fact Sheet 2017
Form 10-K 2017
Form 10-K 2016
Fact Sheet 2015
Form 10-K 2015
Form 10-K 2014
Subscription required - Subscription is required.

Aerial view:

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