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Australia
Capricorn Mine

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 Location:
115 km N from Mount Isa, Queensland, Australia

  Regional Office:
Level 3, 232 Adelaide St
Brisbane
Queensland, Australia
4000
Phone  ...  Subscription required
Fax+ 61-7-3145-0154
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Copper
  • Cobalt
Mining Method
  • Sub-level caving
  • Longhole open stoping
  • Avoca
  • Paste backfill
Processing
  • Flotation
Mine Life13 years (as of Jan 1, 2019)


Owners & OPERATOR

Source:
CompanyInterestOwnership
Byrnecut Australia Pty Ltd. (operator)
Ausenco Ltd. (operator)
Capricorn Copper Holdings Pty Ltd 100 % Indirect
In October 2015, Capricorn Copper Holdings Pty Ltd acquired Capricorn Copper Pty Ltd, the 100% owner of the mothballed Capricorn Copper Mine (CCM) located in North West Queensland. Capricorn Copper Holdings Pty Ltd is an incorporated joint venture owned by EMR Capital and Lighthouse Minerals Pty Ltd. EMR Capital is a specialist resource private equity fund and comprises a team with extensive technical, development and operational experience. Lighthouse Minerals Pty Ltd is a private mining company.

Deposit Type

  • Breccia pipe / Stockwork
  • Vein / narrow vein
  • Sediment-hosted
  • Hydrothermal


Summary:

The copper deposits of the Capricorn Copper Mine (CCM) are situated within the Western Fold Belt of the Mount Isa Inlier.

This belt hosts the world class Cu/Pb-Zn Mount Isa Mine, and a range of other hydrothermal copper deposits including Capricorn Copper Mine, Mount Oxide, Lady Annie and Mount Kelly.

The Mount Isa Cu deposit (255 Mt @ 3.3% Cu) and the Capricorn Copper Mine (36.8 Mt @ 2.5% Cu) are the two most significant sediment-hosted copper deposits in the Western Fold Belt. The deposits are
hosted in deformed Proterozoic sediments that range in age from 1740 to 1652 Ma.

The CCM project includes five deposits: Mammoth (MAM), Mammoth North (MAM_N), Esperanza-Pluto (ESP), Esperanza South (ESS) and Greenstone (GST).

Mammoth & Mammoth North
- Hosted by the Proterozoic Whitworth Quartzite of the Myally Subgroup and the Unconformity contact with the overlying Surprise Creek Formation
- Mineralisation hosted in breccia at the intersection of the E-W trending Mammoth Fault and the N- S trending Portal Fault.

Esperanza-Pluto
- Esperanza hosted in shales of the Esperanza Formation at the structural confluence between the E- W trending Mammoth Fault and the Mammoth Extended Fault, which are splays to the N-S trending Esperanza Fault.
- The Pluto prospect is bounded to the West and North by the Mammoth Extended Fault and abuts the formerly mined Esperanza Pit to the South.

Esperanza South
- Located on the footwall of the West-dipping Esperanza Fault that juxtaposes Eastern Creek Volcanics against Esperanza Sediments
- Mineralisation comprises chalcocite in veins with significant Ag by-products

Greenstone
- Mineralisation exists in fault bounded discrete breccia zones of stockwork sulphide veins centred about the ENE-trending, Steeply south-dipping Mammoth Extended Fault within the Surprise Creek Formation and Whitworth Quartzite.

The Capricorn Copper deposits (MAM, MAM_N, ESP, ESS and GST) are each at different stages of definition, development or mining. Copper mineralisation is related to a set of interconnected east to northeast-trending faults and fault splays associated with the regional scale, north-trending MGFZ. Mineralisation occurs as stockwork veins, breccias and as adjacent replacement of host rocks within and close to the faults.


Mining Methods

  • Sub-level caving
  • Longhole open stoping
  • Avoca
  • Paste backfill


Summary:

Capricorn Copper Mine (CCM) has seven primary ore bodies contained within a 1.5km radius, with mining to occur from multiple ore bodies through two declines. The mining methods and extraction sequencing have been selected based on a detailed trade off study including economic analysis of individual ore bodies considering the suitability of the mining method, access of equipment and geological and geotechnical settings. From this study, Longitudinal Sub Level Caving (LSLC) was selected as the most appropriate method for Esperanza South (ESS). All other orebodies will be mined using Long Hole Open Stoping (LHOS) with paste fill.

The existing MAM portal provides access to Mammoth Deeps, Greenstone, Mammoth North, East and Pluto deposits. The Esperanza South underground mine is located to the southwest of the existing Mammoth workings. The orebodies are separated by approximately 1km (with the portals approximately 1.9km apart). The Esperanza South orebody has its own independent decline and supporting mine infrastructure.


Crushing and Grinding
Crusher / Mill TypeModelSizePowerQuantity
Jaw crusher 1
SAG mill 1
Ball mill 1

Summary:

The Crushing and Milling flow sheet consists of:
- single toggle jaw crusher, feeding a Coarse Ore Stockpile (COS);
- comminution circuit comprised of a closed SAG and Ball Mill paired with a hydrocyclone cluster.


Processing

  • Flotation

Source: Subscription required

Summary:

Capricorn Copper Mine is targeting production of approximately 30ktpa of copper in copper concentrate. The grade of the copper concentrate is expected to be approximately 30% and will be transported to the Port of Townsville in sealed half height containers for international sale. To achieve this, CCM has developed strong geological and resource models that have supported the development of production plans with increased confidence and capacity to mine and process copper ore compared to previous operational periods at the mine.

The existing processing infrastructure at Capricorn Copper Mine is a collection of historical upgrades and modifications to the original process flow design, and reflects the different technologies employed to recover copper over decades of operation. The current process flow design is a conventional copper sulphide flotation concentrator and current works include a combination of refurbishment of existing equipment and some minor modifications to i ........


Production:

CommodityUnits2019
Copper t  ......  Subscription required
All production numbers are expressed as metal in concentrate. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2019
Annual processing rate  ......  Subscription required
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Reserves at November 8, 2019:

CategoryTonnage CommodityGradeContained Metal
Total Resource 69.9 Mt Copper 1.8 % 1.2 Mt
Total Resource 69.9 Mt Cobalt 340 ppm


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 3, 2020
....................... Subscription required ....................... Subscription required Subscription required Nov 3, 2020
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2020
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
Corporate Presentation 2017
Press Release 2017
Other 2016
Subscription required - Subscription is required.

Aerial view:

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