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Australia
Mt Cattlin Mine

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

  Address:
Mt Cattlin, Lake King
Ravensthorpe
Western Australia, Australia
6346
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Fax+61-8-9839-0399
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Spodumene
Mining Method
  • Truck & Shovel / Loader
Processing
  • Gravity separation
  • Dense media separation
Mine Life14 years (as of Jan 1, 2011)
Following the recommissioning of the upgraded facility in 2016, the operation achieved commercial production at the end of April 2017.
Latest NewsGalaxy Resources Limited Announcement     January 28, 2021


Owners

Source: p. 46
CompanyInterestOwnership
Galaxy Resources Ltd. 100 % Indirect

Deposit Type

  • Pegmatite


Summary:

The Mt. Cattlin Project lies within the Ravensthorpe Terrane, with host rocks comprising both the Annabelle Volcanics to the west, and the Manyutup Tonalite to the east. The contact between these rock types extends through the Project area.

The Annabelle Volcanics at Mt. Cattlin consist of intermediate to mafic volcanic rocks, comprising both pyroclastic material and lavas.

Both the Annabelle Volcanics and the Manyutup Tonalite are intruded by numerous fine to coarse-grained metamorphosed dolerite dykes. A NNW trending gabbro (termed pyroxenite in earlier reports) occurs at the eastern edge of the Mt. Cattlin pegmatite ore body.

The pegmatites which comprise the ore body occur as a series of sub-horizontal dykes, hosted by both volcanic and intrusive rocks. Several dolerite or quartz gabbro dykes trending roughly ENE and north-south cut all lithologies including the pegmatite dykes and are believed to be Proterozoic in age.

Mineralisation.
Lithium and tantalum mineralisation occurs in pegmatites, which have intruded both the Annabelle Volcanics and the Manyutup Tonalite, close to the contact between these two sequences.

The pegmatite dykes occur as a series of sub horizontal to gently-dipping horizons. In places they occur as stacked horizons which overlap in section. Pegmatite mineralisation defined to date covers an area of around 1.6 km east-west and 1 km north-south. The main pegmatite units drilled to date generally lie between 30 m and 60 m below the surface, and outcrop in some locations. However, deeper zones of lithium-mineralised pegmatites occur over 140 m below the surface to the northwest of the main ore body and may have potential to be mined from underground.

The pegmatites have a diverse mineralogy with major minerals comprising quartz, albite, cleavelandite (platy albite), microcline, perthite, spodumene, muscovite and lepidolite. Minor minerals include tourmaline, schorlite, elbaite, beryl, microlite, columbite-tantalite, sphalerite, amblygonite-montebrasite, triphylite, apatite, spessartite and fluorite. Spodumene is the predominant lithium ore mineral, and several types of spodumene are recognised, including light green and white varieties. Tantalum occurs as the manganese-rich end members of the columbite-tantalite series including Ta-rich manganotantalite, and as microlite.

The lithium minerals within the pegmatites are shown below:
- Spodumene LiAl(SiO3)2 contains 4 to 8 % lithium oxide (lithia).
- Amblygonite, LiAl(F,OH)PO4, contains 8 to 10 % lithia.
- Lepidolite, (lithium mica) contains 2 to 4 % lithia.
- Cookeite, (lithium chlorite).

The mineralogy of the pegmatites varies laterally, and can also be crudely zoned in a sub-vertical manner (perpendicular to margins), with zones differentiated by mineralogy and grain size.

Part of the northeast of the deposit contains the lithium-bearing mica lepidolite, which does not occur in the rest of the deposit. The lepidolite-rich zones contain higher tantalum (mainly microlite) grades. Zones include an aplitic rock comprising mainly quartzalbite- muscovite near contacts with country rocks, and zones of predominantly light green, and predominantly white spodumene. Lepidolite is generally associated with the white spodumene. Quartz-tourmaline veins are associated with the pegmatites and occur in places in the country rocks up to 10s of metres away from the pegmatites.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Mt Cattlin mine operations include open-pit mining of a flat-lying pegmatite ore body. The flat-lying nature of the ore body allows mining to proceed at a reasonably constant strip ratio once the ore is uncovered. Mining is carried out using excavator and truck operations, delivering to a conventional crushing and Dense Media Separation (“DMS”) gravity recovery circuit. Contract mining is used for grade control drilling and earthmoving operations (drilling, blasting, load, haul and ancillary work) for the open-cut mining operation.


Crushing and Grinding


Processing

  • Gravity separation
  • Dense media separation

Flow Sheet: Subscription required

Summary:

The crushing plant consists of a 3-stage crushing circuit producing a -6mm product from ROM ore at a treatment rate of 1.8 million tonnes per annum.

The concentrator consists of reflux classifier, dual size steam, two stages of DMS cyclones, with mechanical attritioning of the intermediate sink product. Recent additions include an ultra-fines DMS circuit, a secondary float re-crush circuit and several optical sorting units. The final spodumene concentrate is trucked to the Esperance port for export.

Recoveries & Grades:

CommodityParameter201920182017
Spodumene Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required
Spodumene Head Grade, % 1.231.081.2
Spodumene Concentrate Grade, %  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Production:

CommodityUnits2020201920182017
Spodumene dmt  ......  Subscription required ^  ......  Subscription required  ......  Subscription required155,679
All production numbers are expressed as concentrate. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017
Total tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required
Annual processing rate  ......  Subscription required  ......  Subscription required  ......  Subscription required
Waste  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at December 31, 2019:

CategoryOreTypeTonnage CommodityGradeContained 
Commodity
Proven In-Situ (OP) 0.8 Mt Li2O 1.42 % 11.4 kt
Proven In-Situ (OP) 0.8 Mt Ta2O5 213 ppm 376 k lbs
Probable Stockpiles 3 Mt Li2O 0.93 % 28 kt
Probable In-Situ (OP) 4.5 Mt Li2O 1.51 % 68 kt
Probable Stockpiles 3 Mt Ta2O5 121 ppm 800 k lbs
Probable In-Situ (OP) 4.5 Mt Ta2O5 168 ppm 1,667 k lbs
Proven & Probable Total 8.2 Mt Li2O 1.29 % 107 kt
Proven & Probable Total 8.2 Mt Ta2O5 155 ppm 2,843 k lbs
Measured In-Situ (OP) 1 Mt Li2O 1.36 % 13.6 kt
Measured In-Situ (OP) 1 Mt Ta2O5 210 ppm 463 k lbs
Indicated Stockpiles 3 Mt Li2O 0.93 % 27.9 kt
Indicated In-Situ (OP) 6.2 Mt Li2O 1.44 % 90 kt
Indicated Stockpiles 3 Mt Ta2O5 121 ppm 800 k lbs
Indicated In-Situ (OP) 6.2 Mt Ta2O5 167 ppm 2,296 k lbs
Inferred In-Situ (OP) 4.4 Mt Li2O 1.3 % 57.2 kt
Inferred In-Situ (OP) 4.4 Mt Ta2O5 156 ppm 1,484 k lbs
Total Resource Total 14.6 Mt Li2O 1.29 % 188 kt
Total Resource Total 14.6 Mt Ta2O5 157 ppm 5,043 k lbs

Commodity Production Costs:

CommodityUnits201920182017
Cash costs Spodumene USD  ......  Subscription required  ......  Subscription required 346 / dmt
Cash costs (sold) Spodumene USD  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units201920182017
Capital expenditures M USD  ......  Subscription required  ......  Subscription required
Revenue M  ......  Subscription required  ......  Subscription required  ......  Subscription required
Pre-tax Income M  ......  Subscription required  ......  Subscription required  ......  Subscription required
EBITDA M  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 20, 2020
....................... Subscription required ....................... Subscription required Subscription required May 20, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
Annual Report 2017
Annual Report 2016
Annual Report 2015
Annual Report 2014
Technical Report 2011
Press Release 2009
Subscription required - Subscription is required.

News:

NewsDate
Galaxy Resources Limited Announcement January 28, 2021
Galaxy targets ‘value over volume’ at Mt Cattlin November 19, 2019
Galaxy Resources Limited Announces Q4 and Full Year 2018 Production January 24, 2019

Aerial view:

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