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Australia
Mt Cattlin Mine

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 Location:
2 km N from Ravensthorpe, Western Australia, Australia

  Address:
Riparian Plaza Level 35, 71 Eagle Street
Brisbane
Queensland, Australia
4001
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Spodumene
  • Lithium
  • Tantalum
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2027
Mt Cattlin’s Ore Reserve was revised to 7.1Mt at 1.20% Li2O and indicates a projected 4-5 year Life-of-Mine (2027–2028) via open pit mining methods.

A Feasibility Study will evaluate open pit versus underground mining with higher waste/ore strip ratio as mineralisation continues down dip and at greater depth.


Owners

Source: p. 23
CompanyInterestOwnership
Allkem Ltd. 100 % Indirect
Mt Cattlin is owned by Galaxy Lithium Pty Ltd, a wholly-owned subsidiary of Allkem Limited.

Contractors

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Deposit Type

  • Pegmatite
  • Volcanic hosted


Summary:

Pegmatites form the host rock to the Li2O and Ta2O5 mineralisation at Mt Cattlin. It is generally accepted that pegmatites form by a process of fractional crystallisation of an initially granitic composition melt. The fractional crystallisation concentrates incompatible elements, such as light ion lithophile elements and volatiles (such as B, Li, F, P, H2O, and CO2) into the late-stage melt phase. The volatiles lower the viscosity of the melt and reduce the solidification temperature to levels as low as 350 °C to 400 °C. This permits fractional crystallisation to proceed to extreme levels, resulting in highly evolved end-member pegmatites. The fluxing effect of incompatible elements and volatiles allows rapid diffusion rates of ions, resulting in the formation of very large crystals characteristic of pegmatites.

The less dense pegmatitic magma may rise and accumulate at the top of the granitic intrusive body. However, typically the more fractionated pegmatitic melt phases escape into the surrounding country rock along faults or other structures to form pegmatites external to the parent intrusive, which is the case at Mt Cattlin.

Based on apparent mineral assemblages and textures, Mt Cattlin has been categorised as an albitespodumene type with the LCT classification. Moreover, the relatively highly coarse nature of spodumene at Mt Cattlin compared to that of other LCT pegmatites in WA suggests that these pegmatites crystallised from a high-fluxing agent ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Mt Cattlin mine currently operates using a conventional open pit mining method to deliver ore to the processing plant from a series of open pits adjacent to the plant facility. The mining method is industry standard involving drilling and blasting of all material before loading and hauling using backhoe excavators and rear dump rigid trucks. The ore and waste rock are drilled and blasted with 10 m high benches, and mined on 2 m to 2.5 m flitches.

Vegetation, topsoil, and overburden is stripped and stockpiled for future reclamation use.

The ore is delivered to a conventional crushing and dense medium separation (DMS) circuit. During mining operations, a portion of the mined ore is diluted with basalt which is considered a contaminant. The processing plant includes a separate circuit during crushing and screening that utilises optical sorters to remove basalt material from the process stream.

Earthmoving operations use a mining contractor to conduct all drilling, blasting, load, haul, and ancillary work for the open-cut mining operation.

The mining fleet configuration is nominally based on the current active mining fleet, which consists of the 360 t, 200 t, and 150 t excavator fleets. Two additional large excavators have also been available on site to provide back-up, undertake ancillary work, and bolster production as needed. The mining fleet configuration is influenced by the production rate, mill throughput, strip ratio and th ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityUnits202320222020201920182017
Spodumene kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required157156
All production numbers are expressed as concentrate. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2023202020192018
Annual processing capacity  ......  Subscription required1.8 Mt1.8 Mt1.8 Mt
Ore tonnes mined  ......  Subscription required352,077 bcm1,790,049 wmt1,777,720 wmt
Total tonnes mined  ......  Subscription required1,767,210 bcm4,625,344 bcm3,458,010 bcm
Tonnes processed  ......  Subscription required1,086,364 wmt1,695,369 wmt1,703,503 wmt
Waste  ......  Subscription required
Subscription required - Subscription is required.

Reserves at June 30, 2023:
Ore Reserves mine designs were conducted on a 0.4% Li2O cut-ff grade and Ore Reserves are reported above a marginal cut-off grade of 0.3 % Li2O.
The Mineral Resources have been reported at a cut-off of 0.3% Li2O.

CategoryOreTypeTonnage CommodityGradeContained 
Commodity
Proven In-Situ (OP) 0.2 Mt Li2O 0.9 % 1 kt
Proven In-Situ (OP) 0.2 Mt Ta2O5 120 ppm 45 k lbs
Probable Stockpiles 1.8 Mt Li2O 0.8 % 13 kt
Probable In-Situ (OP) 5.2 Mt Li2O 1.3 % 69 kt
Probable Stockpiles 1.8 Mt Ta2O5 95 ppm 396 k lbs
Probable In-Situ (OP) 5.2 Mt Ta2O5 130 ppm 1,500 k lbs
Proven & Probable Total 7.1 Mt Li2O 1.2 % 84 kt
Proven & Probable Total 7.1 Mt Ta2O5 120 ppm 1,900 k lbs
Measured In-Situ (OP) 0.2 Mt Li2O 1 % 2 kt
Measured In-Situ (OP) 0.2 Mt Ta2O5 172 ppm 75 k lbs
Indicated Stockpiles 1.8 Mt Li2O 0.8 % 13 kt
Indicated In-Situ (OP) 8.8 Mt Li2O 1.4 % 121 kt
Indicated Stockpiles 1.8 Mt Ta2O5 95 ppm 396 k lbs
Indicated In-Situ (OP) 8.8 Mt Ta2O5 165 ppm 3,197 k lbs
Inferred In-Situ (OP) 1.3 Mt Li2O 1.3 % 17 kt
Inferred In-Situ (OP) 1.3 Mt Ta2O5 181 ppm 518 k lbs
Total Resource Total 12.1 Mt Li2O 1.3 % 153 kt
Total Resource Total 12.1 Mt Ta2O5 167 ppm 4,187 k lbs

Commodity Production Costs:

CommodityUnits202320222020201920182017
Cash costs Spodumene USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 451 / dmt   346 / dmt  
Cash costs (sold) Spodumene USD  ......  Subscription required 411 / dmt  
^ Guidance / Forecast.
Subscription required - Subscription is required.

Financials:

Units202320222020201920182017
Capital expenditures M USD  ......  Subscription required  ......  Subscription required 32.8  
Revenue M  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 153.9  USD 126  AUD
Pre-tax Income M  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 26.1  USD 33  AUD
After-tax Income M  ......  Subscription required  ......  Subscription required
EBITDA M  ......  Subscription required  ......  Subscription required 70.5  USD
Subscription required - Subscription is required


Water Supply
Source: Subscription required

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Heavy Mobile Equipment as of August 9, 2023:
HME TypeModelSizeQuantityLeased or
Contractor
ANFO Loader ....................... Subscription required Leased
Backhoe ....................... Subscription required 360 t ....................... Subscription required Leased
Backhoe ....................... Subscription required 150 t ....................... Subscription required Leased
Backhoe ....................... Subscription required 200 t ....................... Subscription required Leased
Drill (blasthole) ....................... Subscription required ....................... Subscription required Leased
Drill (blasthole) ....................... Subscription required ....................... Subscription required Leased
Grader ....................... Subscription required Leased
Truck (dump) ....................... Subscription required 90 ....................... Subscription required Leased
Truck (dump) ....................... Subscription required 140 t ....................... Subscription required Leased
Truck (dump) ....................... Subscription required 90 t ....................... Subscription required Leased
Truck (service) ....................... Subscription required Leased
Truck (water) ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 28, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 16, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 16, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 28, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 28, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 28, 2023
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2022
Subscription required 2020
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
Annual Report 2023
Corporate Presentation 2023
Technical Report 2023
Annual Report 2022
Corporate Presentation 2022
Press Release 2022
Sustainability Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Other 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Annual Report 2016
Annual Report 2015
Annual Report 2014
Technical Report 2011
Press Release 2009
Subscription required - Subscription is required.

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