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Australia

Darlot Mine

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Overview

Mine TypeUnderground
StatusActive
Commodities
  • Gold
Mining Method
  • Longhole stoping
Backfill type ... Lock
Production Start... Lock
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SnapshotDarlot is operated as a satellite mine 100 kilometres north of King of the Hills (KOTH), with ore being hauled to and treated at the KOTH processing plant.

Owners

SourceSource
CompanyInterestOwnership
Darlot Mining Company (Pty) Ltd. (operator) 100 % Direct
Vault Minerals Ltd. 100 % Indirect
Vault Minerals Limited has been decided as the new name of the merged Red 5 and Silver Lake.

The Darlot mine is operated through Red 5’s 100%-owned subsidiary company, Darlot Mining Company Pty Ltd.

Contractors

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Deposit type

  • Vein / narrow vein
  • Porphyry

Summary:

Darlot lies at the southern end of the south-southeast trending Yandal Greenstone Belt, a deformed and metamorphosed late Archaean volcano-sedimentary succession of which the eastern and western contacts are fault bound, characterised by strong deformation, metamorphism to lower amphibolite facies and characterised by interweaving of granite and greenstone rock units.

The mine sequence dips 30° to 50° northeast along the southwestern limb or a 3 km wavelength, open, north-northwest plunging syncline. This bimodal volcano-sedimentary succession is intruded by pre-deformational differentiated Mount Pickering dolerite sills and by several late-tectonic intrusions.

Gold mineralisation is associated with quartz veins and alteration haloes controlled by major structures or secondary splays and cross-linking structures. The Darlot deposit has been differentiated into two separate entities: the Darlot lodes and Centenary orebody. The Centenary orebody is located some 1.2 km east of the Darlot open pit and down dip from the Darlot lode extensions.

In the Darlot lodes, gold mineralisation occurs within and around quartz laminar and sheeted quartz veins in local dilation zones along the Darlot Thrust, in addition to subhorizontal extensional quartz veins in felsic volcanic and intrusive rocks above the thrust.

The Centenary orebody has been defined from approximately 150 m to 700 m below surface. Gold mineralisation occurs within subhorizontal to 20° west dipping stacked quartz veins bound to the west by the Oval Fault and to the east by the Lords Fault.

Several mineralisation styles are evident at Darlot and include:
- Centenary (bulk): sheeted flat extension quartz veining (dipping 10° west) with sericite - ankerite-pyrite-gold-chlorite alteration which represents approximately 70% of the Centenary orebody
- Walters (Quartz reef): forms within reverse faults as laminated quartz veins (dips 45° west) locally brecciated with crack-seal texture and ranging from 0.5 to 5 m in width
- Lords South Flats (flat): flat lying quartz breccia veining; sericite/silica alteration proximal to veining within magnetic dolerites and high pyrite percentage (mainly disseminated)
- Lords South Main (hanging wall/footwall halo): mineralisation hosted in felsic rock types; Lords fault structure (laminated quartz veins) runs through the area, locally brecciated crack-seal textures, with the alteration halo mainly restricted to the footwall; haematite alteration with stockwork and high coarse pyrite percentages
- Oval Flats (flat): flat lying extensional veining, albite+ haematite alteration proximately to veining within magnetic dolerite and felsic; high pyrite percentage (mainly disseminated).
- Oval Main (hanging wall/footwall halo): mineralisation hosted in magnetic dolerite + intruded felsic rock types in Oval Fault footwall and hanging wall; Oval Fault sheared quartz and carbonate veins locally brecciated crack-seal textures, with the alteration halo mainly restricted to the hanging wall; albite + haematite alteration with extensional veining and disseminated pyrite.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

The Darlot processing plant continued to operate at full capacity throughout April 2022. The stockpiles of ore from Great Western were then re-directed to the KOTH ROM as commissioning feed stock for the KOTH processing plant. During May and June, Darlot processed ore originating from the Darlot underground only.
CommodityProductUnits202420222021202020192018201720162015
Gold Metal in ore koz  ....  Subscribe
Gold Metal in doré koz  ....  Subscribe  ....  Subscribe  ....  Subscribe102**48**396678
** Combined production for Darlot Mine and King of the Hills (KOTH) Operation

Operational metrics

Metrics2024202320222021202020192018201720162015
Ore tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe497 kt449 kt414 kt
Annual processing capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe0.83 Mt0.83 Mt0.83 Mt0.8 Mt0.8 Mt
Tonnes milled  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
Waste  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe186.6 kt226 kt
Total tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe635 kt640 kt
Tonnes processed  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe453.7 kt457 kt

Production Costs

CommodityUnits2017
All-in sustaining costs (sold) Gold USD 1,432 / oz **  
All-in costs Gold USD 1,432 / oz **  
** Net of By-Product.

Financials

Units2022
Capital expenditures M AUD  ....  Subscribe
Revenue M USD
Operating Income M USD
Gross profit M USD

Heavy Mobile Equipment

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Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 14, 2024
....................... Subscription required ....................... Subscription required Subscription required Oct 8, 2024
....................... Subscription required ....................... Subscription required Subscription required Oct 14, 2024
....................... Subscription required ....................... Subscription required Subscription required Oct 8, 2024
....................... Subscription required ....................... Subscription required Subscription required Oct 14, 2024

EmployeesTotal WorkforceYear
...... Subscription required 2023
...... Subscription required 2021
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Aerial view:

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