Geochemistry results show two distinct populations of tREE enrichment suggesting two potential sources and hosts for tREE enrichment at Rankin Dome; a peralkaline intrusive host (akin to Dubbo Zirconia – Australian Strategic Minerals Ltd) (ASX: ASM) and a sedimentary host from secondary enrichment processes suggestive of an ion adsorption clay style enrichment (similar to Mukutu – Ionic Rare Earths Ltd) (ASX: IXR).
HREE enrichment averages 8.45 times the average Granite crustal abundance as calculated from values presented in the Field Geologists Handbook Monograph 9 by the AusIMM.
Calculated HREE fractions correlate with margins of granitic plutons from geophysical assessment, whilst LREE fractions are clustered over the top of the same interpreted granitic plutons at depth.
Result validation and project re-interpretation utilising all available data is in progress, to define targets for further exploration including the potential for drill program design.
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