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United States
Chukar Mine (Carlin Complex)

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 Location:
12 km NW from Carlin, Nevada, United States

  Regional Office:
1655 Mountain City Highway
Elko
Nevada, United States
89801
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WebsiteWeb
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Overview

StatusClosing / Closed
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Cut & Fill
  • Longhole stoping
Production Start...
The Chukar mine is part of the Carlin complex.

Mining started in 2002 and was completed in 2019.


Owners

Source: p. 7, 60
CompanyInterestOwnership
Newmont Corp. 38.5 % Indirect
Barrick Gold Corp. (operator) 61.5 % Indirect
Nevada Gold Mines LLC 100 % Direct
Barrick's Goldstrike and Newmont's Carlin operation were contributed to the joint venture and are now collectively referred to as Carlin.

Barrick is the operator of the joint venture and owns 61.5%, with Newmont owning the remaining 38.5% of the joint venture.

Contractors

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Deposit Type

  • Sediment-hosted
  • Carlin-type
  • Hydrothermal


Summary:

The mineral deposits along the Carlin Trend form a suite of deposits known as Carlin-type. Carlin deposits comprise stratabound disseminated gold mineralization hosted by Silurian-Devonian carbonate rocks that have been metamorphosed to varying extents. The deposits are hydrothermal in origin and are usually structurally controlled.

The mineralization of Gold Quarry is generally bounded on the northwest by the northeast-striking Chukar-Alunite Fault zone, and on the southeast by the north–northeast-striking Deep Sulfide Feeder Fault zone. Mineralization is preferentially located in the hanging wall of the Chukar-Alunite Fault Zone and in the footwall of the Good Hope Fault. Gold mineralization is disseminated, with higher gold grades concentrated adjacent to structures.

Ten geologically distinctive mineral zones have been defined, referred to as Quarry Main, Deep West, Deep Sulfide Feeder, Chukar North, Chukar South, Good Hope, Mac, Magpie, Southwest, and Wedge.

Six major lithologic units are recognized in the Gold Quarry deposit from surface mapping and drill hole logging: Tertiary Carlin, Devonian Slaven, Devonian Rodeo Creek, Devonian Popovich, Silurian Roberts Mountains, and Ordovician Hanson Creek Formations.

The four main gold-hosting lithologies are:

• Silty limestone sections of the Roberts Mountains Formation;

• The upper 90 metres of the Popovich Formation consisting of silty limestone and calcarenite ........


Mining Methods

  • Cut & Fill
  • Longhole stoping


Summary:

The Chukar Footwall Underground mine workings are collared in the southwest corner of the Gold Quarry Pit; three portals are being driven into the walls of the open pit mine. Ore is mined using longhole-stope and cut-and-fill methods.

Chukar – located in the Gold Quarry pit. Mining started in 2002 and was completed in 2019.
[Carlin Technical Report 2020. P.57]


Crushing and Grinding


Processing

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Summary:

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Combined production numbers are reported under Carlin Complex


Combined reserves/resources are reported under Carlin Complex




Heavy Mobile Equipment:

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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2019
Form 10-K 2018
Form 10-K 2016
Form 10-K 2015
Other 2015
Other 2015
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