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United States
Rodeo Mine (Goldstrike Operation)

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 Location:
54 km NW from Elko, Nevada, United States

  Regional Office:
1655 Mountain City Hwy
Elko
Nevada, United States
89801
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WebsiteWeb
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  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Drift & Fill
  • Longhole open stoping
  • Cemented backfill
Processing
  • Calcining
  • Agitated tank (VAT) leaching
  • Pressure oxidation
  • Resin in leach (RIL)
  • Carbon in leach (CIL)
  • Elution
  • Carbon adsorption-desorption-recovery (ADR)
  • Solvent Extraction & Electrowinning
  • Thiosulfate (reagent)
  • Roasting
Mine Life2027
Goldstrike consist of: Betze-Post open pit mine; Meikle and Rodeo underground mines.


Owners

Source: p. 73
CompanyInterestOwnership
Newmont Corp. 38.5 % Indirect
Barrick Gold Corp. (operator) 61.5 % Indirect
Nevada Gold Mines LLC 100 % Direct
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.

Deposit Type

  • Carlin-type
  • Hydrothermal


Summary:

The Goldstrike deposits are Carlin style deposits. 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 carbonate host rocks are part of an autochthonous miogeoclinal carbonate sequence exposed as tectonic windows beneath the Roberts Mountains allochthon.

Gold mineralization in the underground mine is subdivided into East Banshee, West Banshee, Meikle, South Meikle, (East) Griffin, Extension, West Griffin, Rodeo, Barrel, West Rodeo, and North Post deposits and sub-deposits. The sulphide mineralization is associated with silicification and argillization, and there is little or no oxide mineralization. In sulphide mineralization, the gold is intimately associated with very fine-grained pyrite and marcasite. Associated sulphide minerals include arsenopyrite, realgar, orpiment, and stibnite. Gangue minerals include quartz, calcite, and barite. Realgar and orpiment are generally low in abundance; however, these minerals are locally common in stockwork veinlets, fracture fillings, and breccia matrices.


Mining Methods

  • Drift & Fill
  • Longhole open stoping
  • Cemented backfill


Summary:

Rodeo is a trackless operation, using two different underground mining methods: long-hole open stoping and drift-and-fill.

The paste fill plant was commissioned at Rodeo in 2013. The method utilizes tailings from the Roaster facility mixed with cement. This method replaced backfill from the Rodeo cemented rock fill plant in 2013 when the open pit mined through the plant’s aggregate delivery raise. Paste fill is cheaper and more efficient than the cemented rock fill and offers another way to dispose of Roaster tailings. [2019, Technical Report, p.161]


Crushing and Grinding
Flow Sheet: Source


Processing

  • Calcining
  • Agitated tank (VAT) leaching
  • Pressure oxidation
  • Resin in leach (RIL)
  • Carbon in leach (CIL)
  • Elution
  • Carbon adsorption-desorption-recovery (ADR)
  • Solvent Extraction & Electrowinning
  • Thiosulfate (reagent)
  • Roasting

Flow Sheet: Subscription required

Summary:

The Goldstrike property has two processing facilities: an autoclave installation, which was originally designed to treat the property’s non-carbonaceous sulfide (refractory) ore; and the roaster, which is currently used to treat the property’s carbonaceous ore (whose active carbon content responds poorly to autoclaving). The original combined installed capacity of these two facilities was approximately 27,000 to 30,000 tonnes per day. After the implementation of the thiosulfate modifications described below, the combined installed capacity of the two facilities is expected to be approximately 26,000 to 27,000 tonnes per day. These process facilities treat the ore from Goldstrike’s open pit and underground mines, as well as ore from other Barrick properties. Gold recovered from the ore is processed into doré on-site and shipped to outside refineries for processing into gold bullion.

The TCM technology uses calcium thiosulfate to leach the gold after pressure oxidation rather ........


Combined production numbers are reported under Goldstrike Operation


Combined reserves/resources are reported under Goldstrike Operation



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 29, 2021
....................... Subscription required ....................... Subscription required Subscription required Mar 29, 2021
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Other 2017
Management Discussion & Analysis 2016
Annual Information Form 2015
Corporate Presentation 2014
Technical Report 2012
Subscription required - Subscription is required.

Aerial view:

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