ASR 25.0% 0.5¢ asra minerals limited

Ann: Mt Stirling Central HREE Discovery Confirmed, page-3

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    • Yttrium and Heavy Rare Earth Elements (HREEs) have been confirmed to occur throughout oxide horizons across multiple regional scale survey lines @ Yttria, close to the Arktos Fault

    • Rare Earth Elements (REEs) + Yttrium (Y) together with anomalous Co (Cobalt)-Sc (Scandium)-Ni (Nickel)-Cr (Chromium) – Pd (Palladium) and Pt (Platinum) are enriched within clays and regolith horizons for a distance of > 1km

    • Enrichment zone(s) are limited to extents of regional reconnaissance area drilled, and open in all directions

    • Elevated concentrations of Y vary between 100 and ~ 500 ppm (identified by pXRF)

    • Y is an excellent pathfinder for the high value and rare, HREEs

    • 25g auger vacuum samples were analysed following aqua regia (AR) leach for Y REE and other trace elements, as well as for selected major elements by ICPMS and OES. These yielded Y concentrations up to 544 ppm Y2O3 (MSV 1382)

    • HREYO (heavy rare earth oxide + yttrium oxide) to TREYO (total rare earth + yttrium oxide) ratio of 0.62 ± 0.14 (average ± SD) indicating significant enrichment in the high value and rare HREEs • The critical metal Scandium also occurs in anomalous concentrations with Sc2O3 (Scandium Oxide) values of up to 76 ppm
    Last edited by bas10: 31/01/22
 
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