Mining Intelligence and News
Australia

McPhillamys Project

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Overview

Mine TypeOpen Pit
StagePermitting
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start... Lock
Mine Life... Lock
SnapshotMcPhillamys Gold Project is one of Australia’s largest undeveloped open-pittable gold deposits.

As of April 3, 2024, substantial progress has been made towards completion of the Definitive Feasibility Study (DFS) for the McPhillamys Project. As the DFS has progressed, it has now become apparent that the previously indicated development costs will be higher than anticipated and communicated.

The recent project value and construction cost optimisation work undertaken, along with the scope changes required to meet elements of the NSW permitting approval conditions, has resulted in changes to the original planning approval permit. As part of this process Regis is assembling the information necessary to make an application for a modification to the current NSW State Significant Development approval.

Owners

SourceSource
CompanyInterestOwnership
Regis Resources Ltd. 100 % Indirect
The McPhillamys project is owned by LFB Resources NL, a wholly-owned subsidiary of Regis Resources.

Contractors

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Deposit type

  • Volcanic hosted

Summary:

The McPhillamys gold deposit lies along one of a series of north-south trending splays/horsetail structures that occur at the inflection of the Godolphin-Copperhania Fault Zone where the orientation changes from NNW-SSE to SSW-NNE. The splays are defined by strong shearing and faulting and continue to the south for over 6km. The deposit is hosted by dacite- rich volcaniclastic rocks of the Silurian-aged Anson formation which vary in composition from crystal tuffs to agglomeratic, matrix-supported accretions.

Gold mineralisation is associated with strongly sheared volcaniclastics with strong quartz- carbonate-sericite-pyritepyrrhotite alteration. The gold mineralisation trends roughly north-south over a strike distance of 900m and dips steeply east at 70º to 80º to the east.

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

CommodityUnitsAvg. AnnualLOM
Gold oz 192,0001,728,264
All production numbers are expressed as metal in doré.

Operational metrics

Metrics
Annual ore mining rate 7 Mt *
Annual milling capacity 7 Mt *
Stripping / waste ratio 4.29 *
Waste tonnes, LOM 91,600,000 bcm *
Ore tonnes mined, LOM 21,300,000 bcm *
Total tonnes mined, LOM 112,900,000 bcm *
Tonnes milled, LOM 60.1 Mt *
* According to 2017 study.

Production Costs

CommodityUnitsAverage
Cash costs Gold AUD 918.57 / oz *  
All-in sustaining costs (AISC) Gold AUD 990 / oz *  
Assumed price Gold AUD 1,600 / oz *  
* According to 2017 study / presentation.

Operating Costs

Currency2017
OP mining costs ($/t milled) AUD 15.5 *  
Processing costs ($/t milled) AUD  ....  Subscribe
G&A ($/t milled) AUD  ....  Subscribe
Total operating costs ($/t milled) AUD  ....  Subscribe
* According to 2017 study.

Project Costs

MetricsUnitsLOM Total
Pre-Production capital costs $M AUD  ......  Subscribe
OP OpEx $M AUD  ......  Subscribe
Processing OpEx $M AUD 613.6
G&A costs $M AUD 45.3
Total OpEx $M AUD  ......  Subscribe
Gross revenue (LOM) $M AUD  ......  Subscribe
Pre-tax NPV @ 5% $M AUD  ......  Subscribe

Heavy Mobile Equipment

Fleet data has not been reported.

Personnel

Mine Management

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 12, 2023
....................... Subscription required ....................... Subscription required Subscription required Dec 17, 2023
....................... Subscription required ....................... Subscription required Subscription required Dec 17, 2023
....................... Subscription required ....................... Subscription required ........... Subscription required Subscription required Dec 17, 2023
....................... Subscription required ....................... Subscription required Subscription required Dec 17, 2023

Total WorkforceYear
...... Subscription required 2020

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