Reach Resources has resumed drilling at the Morrissey Hill lithium project in Western Australia’s Gascoyne region to further explore the pegmatite potential, following positive results from phase-one drilling. The company has initiated a 9,000m reverse-circulation (RC) program to test the extension of lithium-bearing pegmatites at the Bonzer prospect, identified during the first drilling phase, and six of the 50 undrilled pegmatite targets mapped during fieldwork.
Results from the maiden 4,500m drilling program revealed multiple stacked pegmatites with thicknesses of up to 30m. Geochemical analysis confirmed a halo of lower-grade lithium mineralization in a 500m central section of the Bonzer deposit, which extends for about 2km along strike and down to approximately 400m.
The key technical takeaway from the assays is that the Bonzer geochemical signature confirms highly-fractionated pegmatites. When plotted on magnesium-lithium ratio charts, a method indicating pegmatite fractionation, several samples fell within the spodumene-bearing pegmatite zone.
Eight kilometers east of Morrissey Hill, Delta Lithium has reported promising drill results at its Malinda deposit, with hits as high as 35.2m at 1% lithium oxide. Bonzer’s rock-chip samples assayed up to 2.3%, 1.4%, and 1.3% lithium oxide. With 9,000m of drilling planned, Reach aims to verify its leads and gather more mineralized data before Christmas.