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Selta Project – Exploration Update
First Development Resources plc has announced positive results from its Selta Project stream sediment sampling program, identifying significant rare-earth element (REE) potential. The program refined target areas, reducing West Nintabrinna from approximately 75km² to 5km² and Ingallan from 90km² to 8.5km², with assays reaching up to 2,103 ppm TREE+Y at West Nintabrinna and 385 ppm at Ingallan. These findings indicate fertile intrusive systems and potential for lithium and REE mineralisation, guiding future mapping and drill-target development. A Gradient Array Induced Polarisation survey at the Lander West gold target is approximately 50% complete but temporarily paused due to weather. Disclaimer*
About this update from First Development Resources Plc
[{"type":"text","content":"\n\nNOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN WHOLE OR IN PART IN, INTO OR FROM THE UNITED STATES OR ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF THAT JURISDICTION.\n19 February 2026\nFirst Development Resources plc\n('First Development\", \"FDR\" or the \"Company')\nSelta Project - Exploration Update\nRare-Earth Element Stream Sediment Sampling Results and Target Refinement\nFirst Development Resources plc (AIM: FDR), the UK-based, Australia-focused exploration company with mineral interests in Western Australia and the Northern Territory, is pleased to provide results and interpretation from the December 2025 stream sediment sampling programme completed at its Selta Project (\"Selta\" or the \"Project\") located in the Aileron Province of Australia's Northern Territory.\nThe programme was undertaken across the West Nintabrinna and Ingallan rare-earth element (\"REE\") target areas and was designed as a low-cost, first-pass exercise to refine previously identified anomalism and define priority areas for focused follow-up exploration.\nHIGHLIGHTS\n· Highest assay of 2,103 ppm total rare-earth elements + yttrium (\"TREE+Y\") returned at West Nintabrinna, with coherent multi-sample anomalism confirming a fertile intrusive system. Encouraging TREE+Y results (up to 385 ppm) also returned from Ingallan.\n· Target areas significantly refined: West Nintabrinna from c.75km² to c.5km² (\"Tourmaline\") and Ingallan reduced from approximately 90km² to c.8.5km² (\"Peake Bore\"), materially improving targeting precision.\n· Geochemical signatures indicate localised granite fractionation and enrichment consistent with potential pegmatite-hosted lithium (Li) and REE mineralisation.\n· Discrete intrusive features at West Nintabrinna and distinct 1.8km strike pale outcrop identified at Ingallan define clear follow-up mapping and drill-target pathways.\n· Gradient Array Induced Polarisation (\"GAIP\") survey at Lander West gold target c.50% complete. Survey temporarily paused due to inclement weather conditions affecting access.\n \nTristan Pottas, Chief Executive Officer of FDR, commented:\n\"The December stream sediment programme has delivered a strong outcome and materially advanced our und...