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Australia
Mt Carbine Mine

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 Location:
81 km NW from Cairns, Queensland, Australia

  Project Contacts:
6888 Mulligan Highway
Mt Carbine
Queensland, Australia
4871
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageRestarting
Mine TypeOpen Pit
Commodities
  • Tungsten
Mining Method
  • Truck & Shovel / Loader
Mine Life2036
The Mt Carbine mine is a surface operation, with two sources of tungsten ore available – an in-situ open pit resource and a historical low-grade stockpile.

Currently Mt Carbine is ramping up treatment of its substantial low-grade surface resource as part of its joint venture with Cronimet with the next step in the development plan being the restart mining of its 100%-owned open pit operations. The open pit operations are forecast to begin during the first quarter of 2023.
Latest NewsEQR Makes Tungsten Discovery at Mt Carbine     February 13, 2023


Owners

Source: p. 84
CompanyInterestOwnership
Mt Carbine Quarrying Operations Pty Ltd. (operator) Indirect
Mt Carbine Retreatment Management Pty Ltd. (operator) Indirect
EQ Resources Ltd. 100 % Indirect
Mt Carbine Quarries Pty Ltd, a wholly owned subsidiary of EQ Resources Ltd., is the authorised holder of mining leases ML 4867 and ML 4919. All operations on the Mt Carbine site are carried out by either Mt Carbine Quarrying Operations Pty Ltd or Mt Carbine Retreatment Management Pty Ltd (MTCRM) based on their operational areas. Mt Carbine Quarrying Operations Pty Ltd is 100% owned by EQR. Mt Carbine Retreatment Management Pty Ltd which is an unincorporated Joint Venture (JV) between EQR and CRONIMET Australia (Pty) Ltd (CRONIMET).

Contractors

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Deposit Type

  • Vein / narrow vein


Summary:

The Mt Carbine mine site is located within the Siluro-Devonian Hodgkinson sedimentary province. The thick sedimentary sequence was complexly folded and regionally metamorphosed prior to and during extensive granitic intrusions in the Carboniferous and Permian.

Within the permit north-north-west trending Hodgkinson Formation turbidite and siltstones are intruded by the Mareeba Granite dated at 277My, and the Mt Alto Granite, dated at 271±5My (Bultitude et al., 1999). Contact metamorphic aureoles marked by formation of cordierite Hornfels surround the granite intrusive and numerous acid to intermediate dykes intrude the metasediments. In the western portion of the tenement, a prominent metabasalt-chert ridge is a significant Hodgkinson formation stratigraphic component.

Mineralisation
The Mt Carbine tungsten deposit consists of a number of vertical to sub vertical sheeted quartz veins ranging in width up to 7m but averaging around 50cm. Only about 20% of the quartz veins are mineralised due to an early barren quartz event and a later mineralising quartz event. Economic minerals are the tungsten minerals of scheelite and wolframite mineralisation that occur in the ratio of 1:4 respectively.

A typical section through the canter of the deposit has over 35 quartz veins ranging from 10cm to 7m in width with 5-8 zones of overprinting mineralised quartz veins of 10 -150cm widths. These high grade veins containing rich quartz - feldspar tung ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Mt Carbine mine is a surface operation, with two sources of tungsten ore available – an in-situ open pit resource and a historical low-grade stockpile. Ore Reserves are 3.54Mt at 0.33% WO3 and 10.0Mt at 0.075% WO3 for open Pit and LGS respectively.

The planned open pit is essentially a deepening by 95m of the current historical open pit from a 315m RL down to a 220m RL pit floor. The footprint of the new pit is an increase by 12% in size. The extension will extract a total of 14.4Mt of rock in the current design.

Extraction from both sources will be undertaken by conventional excavator and truck fleets. Selective ore mining practices will be employed in the in-situ open pit, with bulk ore mining of the LGS occurring due to local grade variability and lack of historical records.

Ore from both sources will be treated at a dry processing plant prior to concentrate production at the gravity plant. Through this process, ore grade to the gravity plant is significantly improved, with an associated reduction in mass.

The primary operational constraints are as follows:
• Processing plant capacity of ~408kt per annum (Gravity Plant);
• Mobile fleet capacity of ~4.9Mt per annum total material movement.

Based on these constraints a life of mine (LOM) schedule has been developed. Following regulatory approvals, a four-year contract mining operation of the in-situ reserves will be undertaken, with supplementary LGS ........


Crushing and Grinding
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Processing

Source: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsAvg. AnnualLOM
Tungsten kt 2.131
All production numbers are expressed as concentrate.

Operational Metrics:

Metrics
Stripping / waste ratio  ......  Subscription required
Annual mining capacity  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Total tonnes mined, LOM  ......  Subscription required
Annual processing capacity  ......  Subscription required
Annual ore mining rate  ......  Subscription required
* According to 2022 study.
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Reserves at September 1, 2022:
Ore Reserves for the Mt Carbine Open Cut are reported using a ROM cut-off grade of 0.08% WO3.

CategoryOreTypeTonnage CommodityGradeContained Metal
Probable Stockpiles 10 Mt WO3 0.075 % 750,000 mtu
Probable In-Situ (OP) 3.54 Mt WO3 0.33 % 1,161,693 mtu
Probable Total 13.54 Mt WO3 0.142 % 1,911,693 mtu
Proven & Probable Stockpiles 10 Mt WO3 0.075 % 750,000 mtu
Proven & Probable In-Situ (OP) 3.54 Mt WO3 0.33 % 1,161,693 mtu
Proven & Probable Total 13.54 Mt WO3 0.142 % 1,911,693 mtu
Indicated Stockpiles 12 Mt WO3 0.075 % 900,000 mtu
Indicated In-Situ (OP) 12.04 Mt WO3 0.27 % 3,296,800 mtu
Inferred In-Situ (OP) 8.28 Mt WO3 0.4 % 3,281,500 mtu
Total Resource Stockpiles 12 Mt WO3 0.075 % 900,000 mtu
Total Resource In-Situ (OP) 20.32 Mt WO3 0.32 % 6,578,300 mtu
Total Resource Total 32.32 Mt WO3 7,478,300 mtu

Commodity Production Costs:

CommodityUnitsAverage
C1 cash costs Tungsten USD  ......  Subscription required *†
* According to 2022 study / presentation.
† Net of By-Product.
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2022 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M AUD  ......  Subscription required
Income Taxes $M AUD  ......  Subscription required
EBITDA (LOM) $M AUD  ......  Subscription required
Pre-tax NPV @ 8% $M AUD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
Pre-tax payback period, years  ......  Subscription required
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Proposed Heavy Mobile Equipment as of November 9, 2022:
HME TypeModelSizeQuantityLeased or
Contractor
Dozer (crawler) ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 10, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Corporate Presentation 2022
Feasibility Study Report 2022
Quarterly Report 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
Subscription required - Subscription is required.

News:

NewsDate
EQR Makes Tungsten Discovery at Mt Carbine February 13, 2023

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