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United States
Phoenix Mine (Phoenix Operation)

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 Location:
20 km SW from Battle Mountain, Nevada, United States

  Address:
1655 Mountain City Highway
Elko
Nevada, United States
89801
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  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
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  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
  • Copper
  • Silver
Mining Method
  • Truck & Shovel / Loader
Processing
  • Gravity separation
  • Flotation
  • Concentrate leach
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)
The Newmont contributed to NGM the non-operating Lone Tree mine, which is included in the Phoenix.


Owners

Source: p. 1
CompanyInterestOwnership
Newmont Corp. 38.5 % Indirect
Barrick Gold Corp. 61.5 % Indirect

Deposit Type

  • Skarn


Summary:

Phoenix is a skarn-hosted polymetallic massive sulfide replacement deposit.

Au-Cu-Ag-Pb-Zn skarn mineralization at Phoenix is centered about the Eocene Copper Canyon granodiorite porphyry stock. Paleozoic sedimentary rocks within two miles of the stock have undergone strong thermal metamorphism (hornfels) and metasomatism (skarn). Metal zonation is manifest by a CuMo core close to the stock grading outward into proximal Cu-Au-Ag, Au-Ag and distal Pb-Zn-Ag mineralization.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Phoenix is an open pit operation, located approximately 10 miles south of Battle Mountain, Nevada and can be accessed by paved highway to a Newmont maintained dirt road. The Phoenix surface mine’s available mining fleet consists of three shovels and twenty 240 ton haul trucks.


Crushing and Grinding


Processing

  • Gravity separation
  • Flotation
  • Concentrate leach
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Source: Subscription required

Summary:

The Phoenix Mill, constructed in 2005, is designed for the beneficiation of 35,000 tons per day of run-of-mine grade ores from the mining operations. Gold, silver, and copper are recovered by:
(1) coarse gold recovery by gravity separation;
(2) two-stage flotation to produce a copper sulfide concentrate for offsite processing;
(3) further processing of the flotation tailings using a carbon-in-pulp leach (CIP) circuit for additional gold and silver recovery.

Gravity concentrates are diverted to an intensive cyanidation unit (ICU) for gold recovery. Cyanide and lime are added to the CIP leach tanks for precious metal dissolution. The CIP leach tanks discharge to the CIP leach circuit, where dissolved precious metals are adsorbed onto activated carbon particles. Loaded carbon is collected for stripping and the tails slurry passes through a ammonium bisulfite (ABS) cyanide destruction circuit prior to discharge to the tailings storage facility (TSF). Loaded carbon ........


Combined production numbers are reported under Phoenix Operation


Reserves at December 31, 2018:

CategoryTonnage CommodityGradeContained Metal
Proven 12,000 kt Gold 0.76 g/t 290 koz
Proven 48,200 kt Copper 0.21 % 100,000 t
Proven 12,000 kt Silver 8.7 g/t 3,360 koz
Probable 120,800 kt Gold 0.65 g/t 2,530 koz
Probable 172,300 kt Copper 0.17 % 300,000 t
Probable 120,800 kt Silver 7.4 g/t 28,550 koz
Proven & Probable 132,800 kt Gold 0.66 g/t 2,820 koz
Proven & Probable 220,500 kt Copper 0.18 % 400,000 t
Proven & Probable 132,800 kt Silver 7.5 g/t 31,910 koz
Measured 6,400 kt Gold 0.51 g/t 100 koz
Measured 24,200 kt Copper 0.16 % 40,000 t
Measured 6,400 kt Silver 6.8 g/t 1,400 koz
Indicated 96,800 kt Gold 0.49 g/t 1,530 koz
Indicated 153,900 kt Copper 0.14 % 210,000 t
Indicated 96,800 kt Silver 6.3 g/t 19,750 koz
Measured & Indicated 103,200 kt Gold 0.49 g/t 1,630 koz
Measured & Indicated 178,100 kt Copper 0.14 % 250,000 t
Measured & Indicated 103,200 kt Silver 6.4 g/t 21,150 koz
Inferred 14,500 kt Gold 0.64 g/t 300 koz
Inferred 24,500 kt Copper 0.15 % 30,000 t
Inferred 14,500 kt Silver 6.3 g/t 2,960 koz


Heavy Mobile Equipment as of December 31, 2019:
HME TypeSizeQuantity
Shovel 3
Truck (haul) 240 tons 20

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 21, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 21, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 21, 2020
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
Annual Report 2017
Year-end Mineral Reserves 2017
Form 10-K 2016
Year-end Mineral Reserves 2016
Form 10-K 2015
Year-end Mineral Reserves 2015
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Aerial view:

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