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Australia
Pilgangoora Mine

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 Location:
120 km SE from Port Hedland, Western Australia, Australia

  Regional Office:
Level 2, 88 Colin Street
PO Box 884,
West Perth
Western Australia, Australia
6005
Phone  ...  Subscription required
Fax+61-8-6266-6288
WebsiteWeb
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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
  • Lithium
  • Tantalum
Mining Method
  • Truck & Shovel / Loader
Processing
  • Spiral concentrator / separator
  • Crush & Screen plant
  • Dewatering
  • Filter press plant
  • Gravity separation
  • Flotation
  • Dense media separation
  • Magnetic separation
Mine Life26 years (as of Jan 1, 2021)
The Pilgangoora Project hosts one of the world’s largest hard rock lithium tantalum deposits and is recognised as being within the most important source of lithium raw materials globally.

Following the acquisition and integration of the neighbouring operation (now the Ngungaju Plant) during FY2021, the Pilgangoora Project now comprises 34 granted tenements (excluding miscellaneous licences) covering an area of 1086.42km2.
Latest NewsPilbara Minerals locks in Pilgangoora solar power     October 20, 2021


Owners

Source: p. 7,84
CompanyInterestOwnership
Pilbara Minerals Ltd. 100 % Indirect
Pilgangoora Operations Pty Ltd (operator) 100 % Direct
Pilbara Minerals’ 100%-owned Pilgangoora Project and Operation.

Deposit Type

  • Pegmatite


Summary:

The Pilgangoora pegmatite deposit is one of the largest hard rock lithium deposits in the world. The prospective Pilgangoora pegmatites are located within the East Strelley greenstone belt, approximately 30km east of Wodgina.

The pegmatites strike sub-parallel to the dominant north-northwest trending fabric of the greenstone belt. Three principal pegmatite groups or domains are identified in the centre of the project area: Eastern, Central and South. Two outlying pegmatite groups, Monster and Southern, are also identified, which have strike lengths of up to 350m and 500m respectively. Pegmatites of the principal domains have a strike length of up to 1.4km, and mostly range in thickness from 1-30m, although pegmatites in the Central domain may be up to 70m thick. The pegmatite domains have variable dips ranging from shallow to sub-vertical to the east.

The pegmatite domains at Pilgangoora are composites of several intrusive phases emplaced sequentially over the duration of the late-stage Turner River orogeny. Lithium grade in the pegmatite domains is subject to two main influences, one primary and the other secondary. The primary ore types comprise mainly coarse spodumene, K-feldspar and quartz, and the abundance of spodumene relative to the other two gangue phases is likely the main control on grade variations in zones grading better than 2% Li2O.

The main modelled mineralized domains have a total dimension of 5,800m (north-south), ranging between 50-1,500m (east-west) in multiple veins and ranging between -370m and 220m RL (AMSL). The Monster and Southern areas each have a modelled strike of approximately 700m and Lynas Find 500m.

The mineralisation dips between 20 and 60 degrees at a dip direction between 050 and 115 degrees for the majority of the domains. The Monster zone strikes 040 to 045 degrees and dips moderately to the south east. In the Lynas area the pegmatite varies between horizontal and 50- degree dip towards the south and south-east.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The mining method used on site and proposed for future operations at 6.3 Mtpa is selective open pit excavation using drill and blast on 5.0 m high benches and load and haul on 2.5 m lifts. Hydraulic excavators (150-t) loading into 90-t rear dump haul trucks are used to separate waste rock (basalt and ultramafic) from mineralized pegmatite to minimize mining dilution. Ore contaminated with basalt is stockpiled for later processing through the ore sorting facility. Drilling uses track-mounted rigs, with sufficient mobility to access the pit from surface contour to pit bottom. The mining method is considered appropriate for the deposit geometry and production rates and has been in use since 2018. Access is easily available to all designed pits, waste dumps and stockpiles. A minimum mining width for pushbacks of 40m has been considered.

For the Central / Eastern deposit using 55°batters in the weathered domain and 75°batters in the transitional and fresh rock domains. Benches will be established every 20 m maximum with a minimum berm width of 10 m.

For the Monster deposit the weathered rock batter is 55° and the fresh rock better angle is 70°. Benches will be established every 20 m maximum with a minimum berm width of 10 m.

For the Lynas Find deposit, the weathered rock batter is 45° and the fresh rock better angle is 65°. Benches will be established every 20 m maximum with a minimum berm width of 15 m.

For South deposit, the weathered rock batter is 55° and 75°batters in the transitional and fresh rock domains. Benches will be established every 20 m maximum with a minimum berm width of 7.2 m. The South pit has geotechnical berms of 15m every 100 m vertical height.

Infrastructure to support a combined 3.6 Mtpa operations is in place, including haul routes, crushing and processing, maintenance, explosive storage, fuel storage, wash-down facilities, water, power, accommodation, offices and port storage facilities. There are ongoing requirements for construction of diversion channels and haulage roads.


Crushing and Grinding


Processing

  • Spiral concentrator / separator
  • Crush & Screen plant
  • Dewatering
  • Filter press plant
  • Gravity separation
  • Flotation
  • Dense media separation
  • Magnetic separation

Flow Sheet: Subscription required

Summary:

The Pilgan 2 Mtpa Stage 1 processing plant has been commercially operational since April 2019. The existing Pilgan plant will be expanded during Stage 2 development to a production capacity of 5 Mtpa as offtake demand requires. The Pilgan plant currently processes uncontaminated pegmatite ore only, with any ore diluted with basalt (up to 22% basalt) currently stockpiled for later processing. An ore sorting facility is to be added to the front end of both the 2 Mtpa and expanded 5 Mtpa Pilgan plant to enable processing of this contaminated ore, and a contract ore sorting proposal is currently being evaluated. The Ngungaju plant capacity is 1.3 Mtpa and currently processes uncontaminated pegmatite ore only. There are no current plans for further expansion of the Ngungaju plant.

The current 2 Mtpa and the proposed 5 Mtpa Pilgan processing plant contains three-stage crushing, ball mills, hydrocyclone classifiers, heavy media separation, flotation, magnetic separation, spirals, a ........

Recoveries & Grades:

CommodityParameter20222021
Spodumene Concentrate Grade, %  ......  Subscription required  ......  Subscription required
Tantalite Concentrate Grade, %  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.

Production:
The DSO program was suspended in Q2 FY2019 and subsequently terminated.

CommodityUnits2022202120202019
Spodumene kt  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required
Tantalite t  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as concentrate. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2021202020192018
Total tonnes mined  ......  Subscription required  ......  Subscription required10,853,657 wmt5,179,727 wmt
Ore tonnes mined  ......  Subscription required  ......  Subscription required2,431,117 wmt344,549 wmt
Waste  ......  Subscription required  ......  Subscription required8,422,540 wmt4,835,178 wmt
Annual production capacity  ......  Subscription required  ......  Subscription required
Tonnes processed  ......  Subscription required  ......  Subscription required1,464,652 wmt
Annual processing capacity  ......  Subscription required  ......  Subscription required2 Mt2 Mt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required3.8
Subscription required - Subscription is required.

Reserves at June 30, 2021:
Mineral Resource reported above 0.2 Li2O% cut-off.
Ore Reserves: the cut-off to define ore is variable by metal grades, but equates to an average cut-off grade of approximately 0.30 % Li2O equivalent taking the contributing Ta2O5 grades into account for the Pilgan plant and up to 0.38 % Li2O for the Ngungaju plant.

CategoryTonnage CommodityGradeContained 
Commodity
Proven 20.3 Mt Li2O 1.29 % 0.3 Mt
Proven 20.3 Mt Ta2O5 120 ppm 5.5 M lbs
Proven 20.3 Mt Fe2O3 1.11 %
Probable 141.6 Mt Li2O 1.17 % 1.7 Mt
Probable 141.6 Mt Ta2O5 97 ppm 30.2 M lbs
Probable 141.6 Mt Fe2O3 1.02 %
Proven & Probable 161.9 Mt Li2O 1.18 % 1.9 Mt
Proven & Probable 161.9 Mt Ta2O5 100 ppm 35.7 M lbs
Proven & Probable 161.9 Mt Fe2O3 1.03 %
Measured 21.5 Mt Li2O 1.35 % 291,000 t
Measured 21.5 Mt Ta2O5 133 ppm 6.3 M lbs
Measured 21.5 Mt Fe2O3 0.5 %
Indicated 188.7 Mt Li2O 1.15 % 2,172,000 t
Indicated 188.7 Mt Ta2O5 100 ppm 41.4 M lbs
Indicated 188.7 Mt Fe2O3 0.56 %
Inferred 98.8 Mt Li2O 1.06 % 1,046,000 t
Inferred 98.8 Mt Ta2O5 110 ppm 24 M lbs
Inferred 98.8 Mt Fe2O3 0.67 %
Total Resource 308.9 Mt Li2O 1.14 % 3,509,000 t
Total Resource 308.9 Mt Ta2O5 105 ppm 71.7 M lbs
Total Resource 308.9 Mt Fe2O3 0.59 %

Commodity Production Costs:

CommodityUnits20212020
Total cash costs (sold) Spodumene AUD  ......  Subscription required†  ......  Subscription required†
^ Guidance / Forecast.
† Net of By-Product.
Subscription required - Subscription is required.

Financials:

Units2022202120202019
Capital expenditures (planned) M AUD  ......  Subscription required
Revenue M AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required
After-tax Income M AUD  ......  Subscription required  ......  Subscription required
EBITDA M AUD  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2021
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2021
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2021
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2021
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2021
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2021
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2021
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2021
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2021
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Corporate Presentation 2018
Feasibility Study Report 2016
Subscription required - Subscription is required.

News:

NewsDate
Pilbara Minerals locks in Pilgangoora solar power October 20, 2021
Pilbara Minerals keeps Ngungaju production ramp-up on track October 13, 2021
Pilbara Minerals feeds first ore to hungry lithium plant October 7, 2021
MACA wins $70m Pilbara Minerals contract extension September 16, 2021
Pilbara Minerals Ltd.: Substantial increase in Pilgangoora Resource to 309Mt confirms its status as the world’s premier hard rock lithium project September 6, 2021
Pilbara Minerals to accelerate production with Ngungaju restart June 25, 2021
Pilbara Minerals plots development of Pilgangoora lithium refinery May 11, 2021
Pilbara Minerals contracts SIMPEC at Pilgangoora March 4, 2021
Pilbara Minerals restarts Pilgangoora after police investigation November 13, 2019
Pilbara Minerals achieves commercial production as growth plans evolve March 29, 2019
Pilbara Minerals sets up next Pilgangoora expansion March 27, 2019
Pilbara Minerals ramps up Pilgangoora towards commercial start January 25, 2019
Pilgangoora DFS results support ‘compelling case’ for expansion August 3, 2018
Pilgangoora lithium project produces first coarse concentrate July 25, 2018

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