Lynas Rare Earths Limited · ASX:LYC
Lynas Rare Earths — Australian Rare Earth Conference 2022
25 slides from Lynas Rare Earths's conference presentation, Nov 1, 2022
Slide 1: Deciphering the clues of the Mt Weld carbonatite source
For personal use only Deciphering the clues of the Mt Weld carbonatite source Australian Rare Earth Conference ANU, Canberra, 1 November 2022
Slide 2: Disclaimer
Disclaimer This presentation has been prepared by Lynas Rare Earths Limited (ABN 27 009 066 648) (Lynas as a general guide only and should not be relied upon as an indication or guarantee of future For personal use only or the Company) this presentation contains summary information about Lynas and i
Slide 3: Acknowledgement
Acknowledgement You will need to For personal use only 1. 2. xx Lynas Rare Earths acknowledges the Traditional Owners of the lands on which we live, work and meet, across Australia. We acknowledge and value Lynas’ Aboriginal and Torres Strait Islander employees, partners and communities and pay resp
Slide 4: Agenda
Agenda You will need to For personal use only 1. 2. Discovery Economic geology 3. 4. Brownfield Developing exploration critical minerals potential capability in WA 44
Slide 5: Goldfields region of Western Australia
Goldfields region of Western Australia • Wongatha land For personal use only • Mt Weld is 28 kilometres south east of nearest community at Laverton • Connected to sealed roads and rail network to Port of Fremantle 5
Slide 6: Discovered in 1966 by Government survey
Discovered in 1966 by Government survey • Aerial magnetic anomaly of the concealed Mt Weld carbonatite, 3.5 km diameter For personal use only • The source of the magnetic anomaly was recently identified with magnetite at depth • The upper 85 metre saprolite is the current zone of economic geology wi
Slide 7: Open at depth
Open at depth • Interpretation (MRIWA project M346) of regional seismic: For personal use only o The carbonatite extends to depths of at least 6 km o Suggest sides are not vertical, rather has a cone shape and appears to form irregular boundaries 7
Slide 8: Economic geology of Mt Weld
Economic geology of Mt Weld For personal use only • Ore production is focussed on REE • Phosphate deposits are identified as apatite mineralisation Central Lanthanide Deposit 2018 design Life of Mine as the red dashed outline 8
Slide 9: Widespread mineralisation
Widespread mineralisation For personal use only • Wide spread REE mineralisation in Mt Weld carbonatite • Drillhole depth varies from 60m to 120m below surface • End of drillhole TREE or TLnO (REE + Y oxide) assays ranges from 700 ppm to 25% • Aeromagnetic signature shows further REE resource expans
Slide 10: Mt Weld Mineral Resource 2018
Mt Weld Mineral Resource 2018 70% increase to 3.0 million tonnes TREO For personal use only Measured Indicated Inferred Total Total Type Tonnes TREO Tonnes TREO Tonnes TREO Tonnes TREO TREO Mt % Mt % Mt % Mt kt LI, CZ & MN 9.3 8.9 8.6 5.4 3.7 4.1 21.6 6.7 1,500 AP 8.2 6.9 3.4 5.6 0.4 5.6 12.0 6.5 80
Slide 11: Life of Mine
Life of Mine For personal use only • Bounded by a dolerite dyke to the east • Cut off grade 4.0% REO with Ore Reserve average 8.2% TREO* • Whittle optimisation of TREO and recoveries to the north, west and south • Shallow pit up to 85 m below surface • Waste to ore ratio of 3.0 N 11 *As at 30 June 2
Slide 12: Ore reserve June 2022
Ore reserve 30 June 2022 For personal use only Source: Lynas 2022 Annual Report released 12 October 2022 12
Slide 13: Current ore mining
Current ore mining For personal use only TSFs Concentrator Run of mine stockpiles • Mine progression in four cutbacks from 2007 to present Current classification of ores: Campaign 4 • High grade ore ranges from 24% to Campaign 3 45% REO Campaign 1 Campaign 2 • Medium grade ore ranges from 16% to 24%
Slide 14: Tailings Storage Facility
Tailings Storage Facility For personal use only • Mt Weld tailings utilises assisted mechanical consolidation • 50% reduction in volume of stored tailings • Shear strength to >30 kPa • 70% water recovery • Able to be mechanically excavated • Preserve option for future re- processing Finalist in West
Slide 15: Unlocking the long-term value of the Mt Weld ore body
Unlocking the long-term value of the Mt Weld ore body For personal use only Support from WA Exploration Incentive Scheme Lynas has unique partnerships with: • CSIRO, ANSTO • Murdoch and Curtin Universities with Minerals Research Institute of WA; University of Adelaide; ANU • World leading experts fr
Slide 16: Heavy rare earth elements
Heavy rare earth elements For personal use only • Yttrium (Xenotime) and HREE have positive correlation • Mine plan optimises TREO extraction sequence • Various hypotheses on placement to be tested >500 ppm Dy2O3, Mt Weld Ore Reserve 2018 16
Slide 17: Continuous REE mineralisation over 1020m drill hole
Continuous REE mineralisation over 1020m drill hole For personal use only 17
Slide 18: Three types of carbonatite mineralogy
Three types of carbonatite mineralogy For personal use only Significant findings: • Clear distinction between carbonatite mineralogy • Dolomite, Ankerite and Calcite type • Increased REE mineralisation in dolomite type carbonatite (600m depth) • REO 1.0% to 2.5% in carbonatite gets enriched to REO 1
Slide 19: Mineralogy
Mineralogy • >40 minerals detected by QEM-SEM in weathered saprolite For personal use only • 3 fluoro-carbonate REE minerals in carbonatite • Geo-metallurgical test work planned MWEX10270 drill core 23m, 244m, 673m depth Mafic zone at depth – revealed the source of the magnetic anomaly identified co
Slide 20: Co-existence of bastnasite and monazite
Co-existence of bastnasite and monazite For personal use only Significant findings: • Coarse grained bastnasite – red • Fine grained clusters of monazite - green • Coexistence continues > 500m depth • In saprolite zone parisite, synchysite and bastnasite are decomposed • Monazite is fragmented to fi
Slide 21: It all starts at Mt Weld
It all starts at Mt Weld An Australian critical minerals resource For personal use only Geological significance: • Stable jurisdiction with strong track record in mining excellence • Already in production - relatively quick production capacity increase • Long mine life - significant resource expansi
Slide 22: Mt Weld expansion integrates with existing operation
Power Station Mt Weld expansion integrates with existing operation For personal use only Concentrate Load- Reagents Out Warehouse Apatite Dewatering (re- use existing) Apatite Leach & Concentrate Dewatering New Grinding Re-use & Crushing Circuit Existing Flotation Flotation Recycle Water Treatment 2
Slide 23: Exciting Kalgoorlie project underway
Exciting Kalgoorlie project underway For personal use only 2323
Slide 24: Visit us at LynasRareEarths.com
For personal use only Visit us at LynasRareEarths.com 24
Slide 25: Appendix A: JORC Compliance and Competent Person's Statement
Appendix A: JORC Compliance and Competent Person’s Statement For personal use only Exploration Results The information in this report that relates to the Exploration Results is based on information compiled by Dr Sadangaya Ganesh Bhat. Dr Sadangaya Ganesh Bhat is a full-time employee of Lynas Rare E
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