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United States
Gold Quarry Mine (Carlin Complex)

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 Location:
11 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
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  • Geology
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  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
The Gold Quarry mine is part of the Carlin complex.


Owners

Source: p. 76-78
CompanyInterestOwnership
Newmont Corp. 38.5 % Indirect
Barrick Gold Corp. (operator) 61.5 % Indirect
On July 1, 2019, Barrick's Goldstrike and Newmont's Carlin operation were contributed to the Nevada Gold Mines joint venture and are now collectively referred to as Carlin.

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

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Carlin-type
  • Stratabound
  • Hydrothermal
  • Sediment-hosted


Summary:

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;
• Siltstone, siliceous mudstone, and cherty siltstone of the Rodeo Creek Formation; and
• About 60 metres of upper-plate sedimentary rocks of the Marys Mountain sequence that consists of limy mudstone and siltstone.

Detailed surface mapping and drill hole interpretation indicates that there are four dominant fault sets at Gold Quar ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Carlin Complex has three major open pit operations including Goldstrike, Gold Quarry and Goldstar (Part of Tri-Star (Genesis)).

Similar to Goldstrike, the Gold Quarry and North Area Carlin (Goldstar) open pit mines are mined by
conventional drill and blast followed by truck and shovel load and haul. Rock material in mill ore
zones are drilled, blasted and mined in 6.1 metres (20 feet) passes to ensure minimal dilution.
Material in leach and waste zones are drilled, blasted and mined in 12.2 metres (40 feet) passes.

North Area Carlin and Gold Quarry pits have haul road effective widths for two-way travel of 100 ft (30 m) for cut-to-fill roads and 120 ft (37 m) for external fill roads with a maximum grade of 10%. Minimum pit-bottom width is designed at 150 ft (45 m). Bench heights vary from 20 ft (6 m) to 40 ft (12 m).


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

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Combined production numbers are reported under Carlin Complex


Reserves at December 31, 2019:

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven Stockpiles 9.6 Mt Gold 2.07 g/t 0.63 M oz
Proven In-Situ (OP) 1.4 Mt Gold 2.96 g/t 0.14 M oz
Probable In-Situ (OP) 58 Mt Gold 2.04 g/t 3.8 M oz
Proven & Probable Stockpiles 9.6 Mt Gold 2.07 g/t 0.63 M oz
Proven & Probable In-Situ (OP) 59 Mt Gold 2.06 g/t 3.9 M oz
Measured In-Situ (OP) 2.2 Mt Gold 2.98 g/t 0.21 M oz
Indicated In-Situ (OP) 140 Mt Gold 1.66 g/t 7.4 M oz
Measured & Indicated In-Situ (OP) 142 Mt Gold 1.68 g/t 7.6 M oz
Inferred In-Situ (OP) 4.7 Mt Gold 1.6 g/t 0.24 M oz



Heavy Mobile Equipment as of March 25, 2020:
HME TypeModel
Loader ....................... Subscription required
Loader ....................... Subscription required
Shovel (hydraulic) ....................... Subscription required
Shovel (hydraulic) ....................... Subscription required
Shovel (hydraulic) ....................... Subscription required
Truck (haul) ....................... Subscription required
Truck (haul) ....................... Subscription required
Truck (haul) ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 5, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 5, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Form 10-K 2018
Form 10-K 2016
Other 2015
Other 2015
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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