Australia

Bardoc Mine

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Categories

Overview

Mine TypeOpen Pit & Underground
 Archived Information
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
  • Sub-level stoping
  • Longhole open stoping
Backfill type ... Lock
Mine Life... Lock
SnapshotThe Bardoc project includes the Zoroastrian, Aphrodite, Excelsior, Bulletin South and Mayday deposits.

As part of DFS 2021, it was planned to develop a standalone mining and processing operation with the construction of 2.1Mtpa CIL plant and flotation circuit on site.

In 2022, St Barbara acquired the Bardoc project and planned to integrate Bardoc assets into its Leonora operation. In 2023, Genesis acquired St Barbara's Leonora assets. The acquisition of Leonora included the acquisition of the Bardoc project.

Genesis is now focused on delivering a five-year outlook to the market in March 2024, cornerstoned by a long life, ‘margin over ounces’ Leonora business plan.

Therefore, the original development plan for the Bardock project described in the DFS 2021 is invalid.

Owners

SourceSource
CompanyInterestOwnership
Genesis Minerals Ltd. 100 % Indirect
On 30 June 2023, Genesis Minerals Limited completed the acquisition of St Barbara’s Leonora assets. The Leonora Acquisition included the acquisition of 100% of St Barbara’s shareholding in Bardoc Gold Pty Ltd.

Contractors

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Deposit type

  • Breccia pipe / Stockwork

Summary:

The deposit occurs on the eastern limb of a narrow NNW trending structure, the Bardoc-Broad Arrow syncline within the Bardoc Tectonic Zone. In this zone the sequence comprises highly deformed fault slice lenses of intercalated Archaean mafic and ultramafic volcanics and metasediments.

Gold mineralisation is predominately hosted within a 300 to 400m wide differentiated dolerite emplaced into the mafic/ultramafic-sediment sequence. The geological setting, structure and style of gold mineralisation show a distinct similarity to that seen at Paddington and the Broad Arrow deposits 12 to 16km to the south.

The Zoroastrian dolerite is thought to be the stratigraphic equivalent of the Paddington dolerite which hosted the 1m+ ounce mine at Paddington itself with both deposits bounded to the west by the Black Flag sediments and to the east by the Mount Corlac ultramafics. Shear zones up to 10m wide containing gold bearing laminated quartz veining (5cm to 1m wide) occur on both contacts.

The Zoroastrian South has been the main focus of drilling since the discovery of the stockwork system within the granophyric unit. Here drilling has been conducted beneath a series of historical shallow workings on narrow quartz veins resulting in the discovery of a large body of gold mineralisation at depth.

The Slug Hill/Breakaway area at Zoroastrian South represents a distinct magnetic/gravity high that appears to be folded (or boundinaged) with closure to the south. Sediments and high magnesium basalts/ultramafics are clearly seen in outcrop but have not been intersected and/or identified in drilling beneath the outcrop. Drilling instead has intersected a differentiated dolerite with a granophyric unit hosting gold mineralisation associated with arsenopyrite rich quartz stockwork/breccia. The magnetic high is instead related to a pyrrhotite rich zone within the dolerite with the gold mineralisation occurring predominately within and adjacent to its margins. 3D modelling suggests that the magnetic zone has a similar 30-40 degree plunge to the north similar to the gold mineralisation.

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

CommodityProductUnitsAvg. AnnualLOM
Gold Metal in doré koz 505
Gold Metal in concentrate koz 593
Gold Metal in conc./ doré koz 1361,097

Operational metrics

Metrics
Annual processing capacity  ....  Subscribe
Stripping / waste ratio  ....  Subscribe
Waste tonnes, LOM  ....  Subscribe
Ore tonnes mined, LOM  ....  Subscribe
Total tonnes mined, LOM  ....  Subscribe
Tonnes processed, LOM  ....  Subscribe
* According to 2021 study.

Production Costs

CommodityUnitsAverage
Cash costs Gold AUD  ....  Subscribe
All-in sustaining costs (AISC) Gold AUD  ....  Subscribe
Assumed price Gold AUD  ....  Subscribe
* According to 2021 study / presentation.

Operating Costs

Currency2021
UG mining costs ($/t milled) AUD 15.2 *  
OP mining costs ($/t milled) AUD  ....  Subscribe
G&A ($/t milled) AUD  ....  Subscribe
* According to 2021 study.

Project Costs

MetricsUnitsLOM Total
Pre-Production capital costs $M AUD  ......  Subscribe
Sustaining CapEx $M AUD  ......  Subscribe
Total CapEx $M AUD  ......  Subscribe
OP OpEx $M AUD  ......  Subscribe
UG OpEx $M AUD  ......  Subscribe
OP/UG OpEx $M AUD  ......  Subscribe
Processing OpEx $M AUD 302.6
Transportation (haulage) costs $M AUD 33.9
G&A costs $M AUD 60.9
Total OpEx $M AUD  ......  Subscribe
Total Taxes $M AUD  ......  Subscribe
Royalty payments $M AUD  ......  Subscribe
Gross revenue (LOM) $M AUD  ......  Subscribe
Net revenue (LOM) $M AUD  ......  Subscribe
EBITDA (LOM) $M AUD  ......  Subscribe
Pre-tax Cash Flow (LOM) $M AUD  ......  Subscribe
After-tax Cash Flow (LOM) $M AUD  ......  Subscribe
Pre-tax NPV @ 6% $M AUD  ......  Subscribe
After-tax NPV @ 6% $M AUD  ......  Subscribe
Pre-tax IRR, %  ......  Subscribe
After-tax IRR, %  ......  Subscribe
After-tax payback period, years  ......  Subscribe

Heavy Mobile Equipment

Fleet data has not been reported.

Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 10, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 10, 2023

Aerial view:

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