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Australia
Dargues Mine

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 Location:
60 km SE from Canberra, New South Wales, Australia

  Address:
920 Majors Creek Road
Majors Creek
New South Wales, Australia
2622
Phone  ...  Subscription required
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
  • Silver
Mining Method
  • Longhole stoping
  • Dry waste backfill
  • Hydraulic backfill
Processing
  • Gravity separation
  • Dewatering
  • Filter press plant
  • Flotation
Mine Life4 years (as of Jan 1, 2021)
March 9, 2022 (Australian Mining) - Catastrophic floods on Australia’s east coast have suspended operations at Aurelia Metals’ Dargues gold mine, 80km east of Canberra, while several major miners donate to recovery efforts.
Latest NewsProduction At Dargues Gold Mine Resumes After Extreme Weather Event     March 11, 2022


Owners

Source: p. 73
CompanyInterestOwnership
Aurelia Metals Ltd. 100 % Indirect
Dargues Gold Mine Ltd. (operator) 100 % Direct
On 17 December 2020, Aurelia acquired 100% of the Dargues Mine and regional exploration tenements by way of the acquisition of all shares in Dargues Mine Pty Ltd from Diversified Minerals Pty Ltd.

Deposit Type

  • Vein / narrow vein
  • Greisen hosted


Summary:

Three major mineralisation styles are present: auriferous, pyrite-rich greisenous zones such as those at Dargues Reef, Exeter Farm and Scotsmans Gully; gold–base metal-rich veins/lodes, including those adjacent to the Majors Creek village; and those deposits which have both greisen- and vein-type mineralisation, including those in the Snobs mine area, which takes in Snobs Reef (Snobs Lode–Stewart & Mertons–United Miners zone) and The Creek prospect.


Mining Methods

  • Longhole stoping
  • Dry waste backfill
  • Hydraulic backfill


Summary:

Ore is mined at Dargues via conventional bottom-up longhole stoping and trucked from the underground mine to a surface stockpile adjacent to the process plant. Stope voids are backfilled with either cemented hydraulic fill or waste rock. Mine access is via a boxcut and decline from the surface.


Crushing and Grinding
Flow Sheet: Source
Crusher / Mill TypeModelSizePowerQuantity
Jaw crusher 1
Ball mill 1
Regrind 1

Summary:

Ore material will be fed into a ROM bin from where it will pass to a three-stage crushing and screening circuit. Product screen undersize material (nominal <12 mm) will be transferred to an enclosed fine ore bin. Material from the fine ore bin will be reclaimed using one or more feeders. Reclaimed material will be directed to a primary ball mill for grinding.

Rougher concentrate will be ground within a re-grind ball milling circuit.


Processing

  • Gravity separation
  • Dewatering
  • Filter press plant
  • Flotation

Flow Sheet: Subscription required

Summary:

The process plant has a permitted capacity of 355ktpa and comprises a three-stage crushing circuit, ball mill and two-stage flotation circuit producing a clean gold-rich pyrite concentrate. Process tailings are used for cemented hydraulic fill or deposited in a lined storage facility.

The ground ore will be directed to a rougher flotation circuit where rougher flotation concentrate and tail streams are separated by the addition of flotation reagents and low pressure air. The rougher concentrate will be directed to the re-grind circuit whilst the rougher tail will be dewatered via a thickener prior to transfer to the tailings storage facility.

Rougher concentrate will be ground within a re-grind ball milling circuit. Re-ground rougher concentrate will be transferred to the cleaner flotation circuit where further flotation will produce the final concentrate. The tail from the cleaner flotation circuit will be transferred back to the rougher circuit feed stream.

Recoveries & Grades:

CommodityParameter20222021
Gold Recovery Rate, %  ......  Subscription required  ......  Subscription required
Gold Head Grade, g/t  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.

Production:
2021 production has been reported for full 2021 year period includes pre acquisition (17 December 2020).

CommodityUnits20222021
Gold koz  ......  Subscription required ^  ......  Subscription required
All production numbers are expressed as metal in concentrate. ^ Guidance / Forecast.

Operational Metrics:

Metrics20222021
Tonnes processed  ......  Subscription required  ......  Subscription required
Annual processing capacity  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
Subscription required - Subscription is required.

Reserves at June 30, 2021:
The Mineral Resource Estimate is reported using a 2g/t Au cut-of.
The Dargues Ore Reserve Estimate utilises a A$80/t NSR cut-off for development and A$135/t NSR cut-off for stoping.

CategoryTonnage CommodityGrade
Proven 230 kt Gold 6.1 g/t
Probable 540 kt Gold 4.5 g/t
Proven & Probable 770 kt Gold 5 g/t
Measured 380 kt Gold 6 g/t
Indicated 1,200 kt Gold 4.8 g/t
Inferred 570 kt Gold 5.1 g/t
Total Resource 2,100 kt Gold 5.1 g/t

Commodity Production Costs:

CommodityUnits2021
All-in sustaining costs (AISC) Gold AUD  ......  Subscription required†
^ Guidance / Forecast.
† Net of By-Product.
Subscription required - Subscription is required.

Financials:

Units2021
Revenue M AUD  ......  Subscription required
EBITDA M AUD  ......  Subscription required
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 15, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 20, 2021
....................... Subscription required ....................... Subscription required Subscription required Oct 20, 2020
....................... Subscription required ....................... Subscription required Subscription required Oct 20, 2021
....................... Subscription required ....................... Subscription required Subscription required Oct 20, 2021
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Review 2018
Mine Operations Plan 2017
Other 2014
Subscription required - Subscription is required.

News:

NewsDate
Production At Dargues Gold Mine Resumes After Extreme Weather Event March 11, 2022
Aurelia Metals: Floods suspend gold mine as recovery continues March 9, 2022
Aurelia snaps up $200m Dargues gold mine November 13, 2020
Construction to start at Dargues gold project January 10, 2019

Aerial view:

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