Announcement PDF ASX: AR3 | MARKET ANNOUNCEMENT ASX Release: 25 June 2026 Maiden Ore Reserve positions Koppamurra for development Maiden Ore Reserve and updated Mineral Resource estimates for Koppamurra Highlights Maiden Ore Reserve Established Development Path • Maiden Ore Reserve of 26 Mt at 920ppm Total Rare Earth Oxide (TREO) marks Koppamurra's most significant de-risking milestone and underpins potential mine planning, financing and development. • Ore Reserve grade is ~22% higher than the global Mineral Resource average grade of 751 ppm TREO, highlighting the optionality for mine sequencing across a large, regionally extensive orebody. • 48% of the rare earth basket comprises high-value heavy and magnet rare earths, critical to EVs, wind turbines and defence applications. Mineral Resource Strengthened • Updated Mineral Resource of 243 Mt at 751 ppm TREO, reinforcing Koppamurra’s scale and quality. • Resource increased by ~7 Mt versus September 2024, with a modest grade improvement on no additional drilling. • Refined geological modelling and resource interpretation, together with expanded reporting of individual rare earth elements. Significant Growth Potential • UpdatedExploration Target across the northern andsouthernprojectareas highlight substantial potential for future resource growth and expansion. AR3 Managing Director and CEO, Travis Beinke said: "China's export controls on rare earths have fundamentally changed the economics of what we are building at Koppamurra. Western supply chains need alternatives — and they need them now. Today's maiden Ore Reserve, delivered alongside our Pre-Feasibility Study, confirms that Koppamurra can be one of them. Twenty-six million tonnes at 920 ppm TREO, with a basket heavily weighted toward the magnet and heavy rare earths the world is scrambling to source outside China — that is a compelling proposition. Backed by Australian Government grant funding, a simple low-capital processing pathway and five years of rigorous technical development, AR3 is positioned to move quickly." Major development milestone AustralianRareEarths(ASX:AR3)hasachievedamajormilestonewiththeestablishmentofamaidenOreReserve fortheKoppamurraProject. The 26 Mt at 920 ppm TREO Probable Ore Reserve has been converted directly from Measured and Indicated Mineral Resources and provides a well-defined starting point for a development that AR3 has designed to be scalable — with staged satellite development opportunities supported by a global resource of 243 Mt and significantexplorationupsidehighlightedbytheExplorationTargetreportedinthisannouncement. Updated Mineral Resource Estimate AR3ispleasedtoprovideanupdatedMineralResourceestimatefortheKoppamurraProject.Whilenoadditional drillinghas beencompletedsince theSeptember2024MineralResourceestimate, the update reflectsimproved geological modelling and resource interpretation, together with expanded reporting of individual rare earth elementsusingtheexistingdrillingdataset(SeeAppendix2). AkeyoutcomeoftheMineralResourceupdateistheimprovedgeologicalmodel,whichhasre-domainedtheionic clay-hosted mineralisation to more accurately define the principal REE-bearing zone and isolate calcium-rich materialassociatedwithlimestonecontactsandweatheredlimestoneclasts.TheadditionofZones4and5(Figure 1) has materially improved the representation of calcium distribution across the resource model, reducing the averagecalciumcontentwithintheprincipalREE-bearingdomain,Zone3,toapproximately3.5%,comparedwith approximately5%inthepreviousMineralResourceestimate. Figure1–TypesectionN5878400showingmodelzonesanddrillholes,with10xverticalexaggeration.Zones4and5were addedtobetterconstrainmineralisationandcalciumdistribution. The JORC classification for the Koppamurra Mineral Resource has been assigned in accordance with the JORC Code (2012), based on geological confidence, drill-hole spacing, sample support within domains, domain continuityandvariography.Classificationisindependentofeconomicassumptions. Drill spacings tosatisfy the Inferred, Indicated and Measured JORCResource Categories are set at 240m, 120 m and60m,respectively.DrillingthatinformstheExplorationTargetwasconductedatlinespacingsofatleast1km, andinsomeareas,upto2kmapart,withdrillholespacingsalongthelinestypicallyrangingfrom100mto400m. Grade estimation was undertaken using Kriging, informed by domain-specific variography and control strings aligned to the observed geological trend. Inverse Distance estimation was used as a check method, with results comparable to the Kriged estimates. Conservative grade capping was applied to the upper tail of the grade distributions to limit the influence of isolated high-grade samples. Validation of the block model included on-screen visual inspection in section and plan, drill hole versus model statistical comparisons, trend analysis by easting, northing and down-hole direction, cut-off sensitivity analysis, and qualitative plan-view heat maps. These checks indicate that the block model provides a reasonable and representative estimate of grade distribution and continuity at the current level of drilling. This latest density work completed by AR3 used a Formation Density Probe to determine in-situ wet density values down hole, which was then refined using a Neutron Porosity Probe to determine water content. Of the 37 aircore drill holes used for the density test work, 14 of them (totalling 111 m) were also sampled at 0.5 m intervals to be used as reference data for the correlate the Neutron Porosity Probe data to in-situ moisture percentage. The updated Global Mineral Resource estimate for the Koppamurra Project using a cut-off grade of 325 ppm TREO-CeO₂ is 243 Mt at 751 ppm TREO and 493 ppm TREO-CeO₂ (Table 1 & Figures 2/3). The Mineral Resource comprises Measured, Indicated and Inferred categories, with Zone 3 accounting for approximately 95% of the reported tonnage and remaining the primary REE-bearing domain. This updated Mineral Resource represents an overall increase of ~7.0 Mt to the global resource and slight increase to the grade up to 751ppm from 748 TREO. The updated Mineral Resource estimate has been expanded to report the full suite of rare earth elements. This enhanced reporting provides a more comprehensive representation of the mineralisation and highlights the potentialvaluecontributionofadditionalindividualrareearthelementswithintheKoppamurraProject. Table1–KoppamurraMRE2026fullelementsuite.Roundingmaycausedifferencesinthelastsignificantfigure. Mineral Resource Category Tonnes BD TREO TREO- CeO2 MREO La2O3 CeO2 Pr6O11 Nd2O3 Sm2O3 Gd2O3 Mt gcm3 ppm ppm %TREO ppm ppm ppm ppm ppm ppm Measured 0.9 1.6 773 502 25.1 125 271 36 135 27 25 Indicated 113 1.6 766 502 25.3 121 264 35 135 27 26 Inferred 130 1.6 737 486 25.3 121 251 34 130 26 24 Grand Total 243 1.6 751 493 25.3 121 257 35 132 26 25 Summary of Global Mineral Resources continued Mineral Resource Category Tb4O7 Dy2O3 Ho2O3 Er2O3 Eu2O3 Tm2O3 Yb2O3 Lu2O3 Y2O3 U3O8 ThO2 ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm Measured 4 20 4 10 6 1 8 1 102 1 21 Indicated 4 20 4 10 6 1 8 1 106 2 19 Inferred 3 19 4 9 6 1 7 1 102 2 18 Grand Total 4 19 4 10 6 1 8 1 104 2 19 Figure2–JORCKoppamurraMineralResourceareasandCategories.Inferredresourcecategoriesdefinedinthenorthern ExplorationTargetiswhereinfilldrillingwasconductedhighlightingthepotentialforfurtherresourcegrowth. Figure3-JORCMineralResourceCategoriesfortheSouthernKoppamurraResourceArea. Updated Exploration Target While no additional drilling has been completed since the September 2024 Exploration Target, the update reflects improved geological modelling and resource interpretation using the existing drilling dataset (See Appendix 2). The Koppamurra project includes a significant Exploration Target across both the southern and northern extents of the project region. The Exploration Target is shown in Figures 2 & 3 for the northern and southern extents respectively and highlights the size of the overall project and its potential for further definition. The updated Exploration Target now ranges 680 Mt at 820ppm TREO to 3620 Mt at 540 ppm TREO. The potential quantity and grade of the Exploration Target is conceptual in nature, as there has been insufficient exploration undertaken to estimate a Mineral Resource and it is uncertain if further exploration will result in the estimation of a Mineral Resource. The updated 2026 Exploration Target estimate is set out in Table 2 below and Figures 2 & 3. Exploration Target has been reported using a cut-off grade range of 225 ppm and 425 ppm TREO-CeO2. Table 2– Koppamurra Exploration Target 2026. Rounding may cause differences in the last significant figure. Material Type Exploration Target Zone Material BD TREO TREO- CeO2 MREO Dy2O3 Tb4O7 Nd2O3 Pr6O11 Mt gcm3 ppm ppm ppm ppm ppm ppm ppm Exploration Target 3 650 - 3120 1.6 560 -820 360 - 540 140 - 210 15 - 20 3 - 4 100 - 150 25 - 40 4 30 - 500 1.6 420 - 690 300 - 500 110 - 190 10 - 20 2 - 3 80 - 140 20 - 40 Total 680 - 3620 1.6 540 – 820 350 - 540 140 - 210 15 - 20 3 - 4 100 - 150 25 - 40 Over the next 2 years, AR3 expects to undertake further drilling across priority areas of the defined Exploration Target. The program is intended to progressively test geological continuity and reduce drill spacing from the current wide-spaced pattern to approximately 240 m and, where warranted, 120 m, providing additional data that may support future Mineral Resource estimation. The updated Mineral Resource and Exploration Target model demonstrates a significant improvement in geological understanding of the Koppamurra deposit. The incorporation of additional mineralisation domains, enhanced calcium modelling and reporting of a broader suite of rare earth elements has resulted in increased resource tonnage and grade, a substantial reduction in calcium content within the ore zone 3, and a more robust Mineral Resource estimate which underpins the Ore Reserve. Ore Reserve Estimation The Maiden Ore Reserve estimate for the Koppmurra Deposit is 26Mt at 920ppm TREO as of 25 June 2026 (Table 3). Tonnages and grades are rounded as appropriate and mineral assemblage is reported as parts per million. Measured and Indicated Mineral Resources have been converted to Probable Ore Reserves only. Ore Reserves are a subset of Mineral Resources and are reported in accordance with the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (The Joint Ore Reserves Committee Code – JORC 2012 Edition). Table 3 Ore Reserve Estimate as at 25 June 2026. Roundingmaycausedifferencesinthelastsignificant figure. Category Material (Mt) BD (g/cm³) TREO (ppm) TREO- CeO2 (ppm) La2O3 (ppm) CeO2 (ppm) Pr6O11 (ppm) Nd2O3 (ppm) Sm2O3 (ppm) Gd2O3 (ppm) Probable 26 1.6 920 602 141 324 43 167 33 32 OreReserveEstimationContinued. Category Tb4O7 (ppm) Dy2O3 (ppm) Ho2O3 (ppm) Er2O3 (ppm) Eu2O3 (ppm) Tm2O3 (ppm) Yb2O3 (ppm) Lu2O3 (ppm) Y2O3 (ppm) U3O8 (ppm) ThO2 (ppm) Probable 4.5 25 4.7 13 7.6 1.6 10 1.4 125 1.4 19 To develop the Ore Reserve estimate the cost, recovery, and price parameters (Modifying Factors) were input to the resource model using Datamine software and applied to Measured, Indicated and Inferred resource cells. The area included for the Ore Reserve estimate includes the proposed ML outline, and the area to the immediate east, west, and south of the proposed ML application area. The northern areas were excluded from the Ore Reserve estimate. For the purposes of this optimisation process, a global mining recovery of 95% was applied to the resource model during the economic evaluation. Inferred resource cells were included in the optimisation process but were excluded from the final Ore Reserve estimation. The resultant cash value for each resource model cell was then derived. The model was optimised using the MaxiPit software and a pit shells generated. The most optimal and economic pit shell was selected for the ultimate pit shell design. The PFS for the Koppamurra Project (see ASX 25 June 2026) is considered to provide appropriate support and good degree of confidence in the Modifying Factors used in this Ore Reserve estimation, which are all derived from the PFS. Consequently, the Ore Reserve classification primarily follows the Mineral Resource estimate classification, and material classified as Measured and Indicated in the Mineral Resource estimate is classified as Probable. Material classified as Inferred has been reported separately as a Production Target and not included in the Ore Reserve estimate. A number of Modifying Factors required to support the Ore Reserve estimate remain subject to ongoing studies, approvals, and detailed design activities. These include the finalisation of permitting and regulatory approvals, completion of detailed engineering and mine design, refinement of operating and capital cost estimates, and confirmation of certain environmental, geotechnical, hydrogeological, infrastructure, and marketing assumptions. These activities are currently being progressed as part of the ongoing project development process, have been documented and detailed in the supporting PFS document and are considered typical for a project at this stage of evaluation. Based on the studies completed to date, there are no identified fatal flaws, material impediments, or technical issues that would reasonably be expected to prevent the granting of the necessary approvals or the implementation of the proposed mining operation. The Competent Person considers that the remaining activities and approvals can be addressed within normal project development timeframes and that there is a reasonable basis to apply the relevant Modifying Factors in support of the Ore Reserve estimate. Figure 5- Proposed mining sequence by year for the Koppamurra Deposit. Note the pits designed within Inferred Resource have not been included in the 26Mt Ore Reserve. The maiden Ore Reserve represents a major step forward for the Koppamurra Project and provides a strong platform for development and reinforces AR3’s confidence in the project’s scale, quality and long-term growth potential. Information provided pursuant to ASX Listing Rule 5.8.1 Geology and Geological Interpretation The Koppamurra Project is located within the Murray Basin of south-eastern Australia, along the eastern margin of the Kanawinka Escarpment within South Australia’s Limestone Coast region, extending into western Victoria. The Project hosts shallow clay-hosted rare earth mineralisation developed within weathered Pleistocene lacustrine sedimentary clay unit and associated clay-rich sediments overlying Gambier Limestone, a regionally extensive carbonate unit of the Murray Group. The geological setting reflects a complex history of marine incursions, coastal sedimentation, tectonic uplift and prolonged weathering associated with development of the Padthaway High and Kanawinka Fault system, which controlled preservation and enrichment of the REE-bearing clay horizons. Rare earth mineralisation occurs within shallow ionic adsorption clay zones typically developed within 2–3 metres above the highly weathered limestone basement. The mineralised profile generally comprises thin sandy overburden overlying REE-enriched smectite-rich clay horizons with strong lateral continuity across the Project area. Research completed by AR3 and independent academic groups indicates the Koppamurra mineralisation represents an unusual sediment-hosted ionic clay rare earth system formed through weathering, sedimentary transport and geochemical enrichment processes linked to far-field granitic source rocks of the Lachlan Orogen. Drilling, Sampling, and analytical Drilling, sampling, analytical and quality assurance procedures remain consistent with those previously reported by the Company. No material changes have occurred to the underlying drilling database, sampling methodology, assay procedures or QA/QC protocols used to support the updated Mineral Resource Estimate. Details of these procedures are provided in the Company's previous Mineral Resource announcements and accompanying JORC Table 1 disclosures. Estimation methodology Mineral Resource The JORC Mineral Resource Classification for the Koppamurra project deposit was supported by drill hole spacing, geological continuity and variography of TREO, TREO-CeO2 of the target mineralised domain Zone 3 and 4. TheclassificationofMeasured,IndicatedandInferredMineralResourceswassupportedbyallthecriteria noted above. A significant Exploration Target has also been defined which can be used to determine areas of significant prospectivity for future drill programmes. As a Competent Person, Mineral Technologies – Head of Geology & Mining Greg Jones considers that the results of the Mineral Resource estimate appropriately reflects a reasonable view of the deposit categorisation and reasonable prospects of eventual economic extraction (RPEEE). Ore Reserve The OPEX cost, recovery and price parameters (Modifying Factors) were applied to the resource model using Datamine software and applied to all Measured, Indicated and Inferred resource cells. The resultant net cash value for each resource model cell was then derived. This cash value model was optimised using software that uses the industry standard Lerch-Grossman (LG) algorithm to generate a series of nested pit shells. The optimisation process was repeated at 5% increments (from 50% to 150% of the base case of Modifying Factors) to revenue (while maintaining the same cost) and new pit shell derived. The purpose of doing this is to generate a series of both incrementally smaller, higher- grade pit-shells (of increments less than 100% base case) and larger, lower grade pit-shells (of increments greater than 100% base case). These pit-shells were each assessed to identify which supported the project’s objectives on acceptable mine life, EBITDA and return on capital. Cut-off grades, including basis for the selected Cut-off Grade Mineral Resource The selection of the 325ppm TREO-CeO2 cut-off grade used for reporting was based on the experience of the Competent Person and given the early stage of the Koppamurra project, this cut-off grade was selected based on a peer review of publicly available information from more advanced projects with comparable mineralisation styles (i.e., clay-hosted rare earth mineralisation) and comparable conceptual processing methods. Material above this cut-off generates a grade of over 700 ppm TREO, and in the opinion of the Competent Person meets the conditions for reporting of a Mineral Resource with reasonable prospects of eventual economic extraction. Ore Reserve The cash value model was optimised using software that uses the industry standard Lerch-Grossman algorithm to generate a series of nested pit shells. This estimation methodology is a much more rigorous method of determining pit limits than using cut-off grades, and therefore cut-off grades have not been used. The net cash value calculated for each model cell was used to drive the LG algorithm and from thence, the most representative and economic pit shell was selected and used for the ultimate pit design. Mining and metallurgical methods / material Modifying Factors Mineral Resource No specific mining or metallurgical methods or parameters were incorporated into the modelling process. Representative material from the current drilling programme will be utilised in ongoing metallurgical testwork. Ore Reserve Mineral Resources are converted to Ore Reserves by open pit optimisation software (Datamine MaxiPit) to provide a guide for detailed design and scheduling. The Modifying Factors applied were based on work conducted during the PFS, including metallurgical test work, development of prices for products, and operating cost development to support the proposed mining and processing operations. A subset of the shells were reviewed to test production profiles, final production requirements, and financial investment decisions. The preferred pit shell (Revenue Factor 100% or Base Case) was selected for more detailed mine planning and scheduling of ore and overburden. The announcement has been authorised for release by the Board of Australian Rare Earths Limited. For further information please contact: Australian Rare Earths Limited IR & Media Enquiries Travis Beinke Jessica Fertig Managing Director and CEO Tau Media T: 1 300 646 100 E: jessica@taumedia.com.au Competent Person’s Statement The information in this report which relates to Mineral Resources and Exploration Target for the Koppamurra rare earth deposit is based upon and fairly represents information compiled by Mr. Greg Jones who is a Fellow of the Australasian Institute of Mining and Metallurgy. Mr. Jones is a full-time employee of Mineral Technologies and has sufficient experience relevant to the style of mineralisation, the type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Mr. Jones consents to the inclusion in this report of the matters based on his information in the form and context in which it appears. The information in this report which relates to Ore Reserve for the Koppamurra rare earth deposit is based upon and fairly represents information compiled by Mr. Chris Sykes who is a Qualified Professional of the Mining and Metallurgical Society of America (MMSA) and has sufficient experience to qualify as a Competent Person as defined in the 2012 edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Mr. Sykes consents to the inclusion in this report of the matters based on his information in the form and context in which it appears. The Ore Reserve quoted in this report is based on information supplied by AR3 Limited and compiled by Mr. Chris Sykes. At the time of preparation of this estimate Mr. Sykes is employed by Mineral Technologies. Forward Looking Statement This announcement contains forward-looking statements which involve a number of risks and uncertainties. These forward-looking statements are expressed in good faith and believed to have a reasonable basis. These statements reflect current expectations, intentions or strategies regarding the future and assumptions based on currently available information. Should one or more of the risks or uncertainties materialise, or should underlying assumptions prove incorrect, actual results may vary from the expectations, intentions and strategies described in this announcement. No obligation is assumed to update forward looking statements if these beliefs, opinions, and estimates should change or to reflect other future developments. Appendix 1- JORC Tables Appendix 2- List of Collars Appendix 3- List of Significant Intersections- (Southern Resource Area) Appendix 4- List of Significant Intersections- (Northern Resource and E.T. Area) JORC Table 1 Section 1 Sampling Techniques and Data Criteria Explanation Comment Sampling techniques Nature and quality of sampling (e.g., cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes,orhandheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling. Include reference to measures taken to ensure sample representivity and the appropriatecalibration of any measurement tools or systems used. Aspects of the determination of mineralisation that are Material to the Public Report. In cases where ‘industry standard’ work has been done this would be relatively simple (e.g., ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases, more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (e.g., submarine nodules) may warrant disclosure of detailed information. RC Aircore drilling methods were used obtain samples from the October-December 2021, February-April 2022, September- December 2022 February- June 2023, and October-December 2023 drilling programs. Aircore drilling (1 m intervals) used for gradeinterpolation; push- core and auger used for geology only. The following information covers the sampling process: All air core samples were collected from the rotary splitter mounted at the bottom of the cyclone using a pre-numbered calico bag and plastic UV sample bag. The samples were geologically logged at 1 m intervals using the marked calico sample which averaged ~1.5 kg in mass. A handheld Olympus Vanta XFR Analyser was used to assess the geochemistry of the air core samples in the field. The XRF analysis provided a full suite of mineral elements for characterising the lithological units. XRF readings were downloaded from the XRF Analyser at the end of each day and uploaded to the Australian Rare Earths Azure Data Studio database. 1,137 field duplicate pairs collected and inserted blindly into the sample batches (~1:30). Spearman correlation 0.911 (no material bias). At the laboratory, the samples were oven dried at 105 degrees for a minimum of 24 hours and secondary crushed to 3 mm fraction and then pulverised to 90% passing 75 µm. Excess residue was maintained for storage while the rest of the sample placed in 8x4 packets and sent to the central weighing laboratory. The samples were submitted for analysis using XRF-ICP-MS method. Laboratory repeats inserted at ~1:20; Spearman correlation 0.999 across BV Perth and BV Adelaide. Commercially obtained standards were inserted by the laboratory at a rate of ~ 1 in 10 into the sample sequence. Standards (OREAS101A/524) show results predominantly within ±1SD; no drift observed. Umpire comparison (BV Perth vs Adelaide) Spearman correlation 0.9939; no bias detected. Nominal values (lower 10th percentile by lithology) applied prior to compositing to avoid grade smearing. Drilling techniques Drill type (e.g., core, reverse circulation, open- hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (e.g., core diameter, triple or standard tube, depth of diamond tails, face- sampling bit, or other type, whether core is oriented and if so, by what method, etc). Drilling was completed using a Mcleod or Wallis air ore drill rig (Landcruiser 6x6 or similar) for the drilling. Aircore drilling is a form of reverse circulation drilling where the sample is collected at the face and returned inside the inner tube. The drill cuttings are removed by injection of compressed air into the hole via the annular area between the inner tube and the drill rod. Aircore drill rods used were 3 m long. NQ diameter (76 mm) drill bits and rods were used. All aircore drill holes were vertical with depths varying between 2 m and 36 m. Drill sample recovery Method of recording and assessing core and chip sample recoveries and results assessed. Measures taken to maximise sample recovery and ensure representative nature of the samples. Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material. Drill sample recovery for aircore is monitored by recording sample condition descriptions where ‘Poor’ to ‘Very Poor’ were used to identify any samples recovered which were potentially not representative of the interval drilled. A comment was included where water injection was required to recover the sample from a particular interval. The use of water injection can potentially bias a sample and very little water injection was required during this drilling program. No significant loses of samples were observed due to the shallow drilling depths (<36 m). The rotary splitter was set to an approximate 20% split, which produced approximately 1.5 kg sample for each meter interval. The 1.5 kg sample was collected in a pre- numbered calico bags and the remaining 80% (5 kg to 8 kg) was collected in plastic UV bags labelled with the hole number and sample interval. At the end of each drill rod, the drill string is cleaned by blowing down with air to remove any clay and silt potentially built up in the sample pipes and cyclone. No relationship exists between sample recovery and grade. Logging Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies. Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography. The total length and percentage of the relevant intersections logged. All aircore samples collected in calico bags were logged for lithology, colour, cement type, hardness, percentage rock estimate, sorting, and any relevant comments such as moisture, sample condition, or vegetation. Geological logging data for all drill holes was qualitatively logged onto Microsoft Excel spreadsheet using a Panasonic Toughbook with validation rules built into the spreadsheet including specific drop- down menus for each variable. The data was uploaded to the Australian Rare Earths Azure Data Studio database. Every drill hole was logged in full and logging was undertaken with reference to a drilling template with codes prescribed and guidance to ensure consistent and systematic data collection. Sub-sampling techniques and sample preparation If core, whether cut or sawn and whether quarter, half or all cores taken. If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry. For all sample types, the nature, quality, and appropriateness of the sample preparation technique. Quality control procedures adopted for allsub- sampling stages to maximise representivity of samples. Measures taken