Macarthur Minerals Limited announced that 2m @ 1.38% Li2O & 1,258 ppm Rb, 125 ppm Cs & 105 ppm Ta from 30m including 1m @ 2.10% Li2O, 1,060 ppm Rb, 119 ppm Cs & 80 ppm Ta from 31m. Located in the East Pilbara region of Western Australia, Tambourah South is situated among major lithium producers such as Pilbara Minerals' Pilgangoora Operations, Mineral Resources' Wodgina Project, Global Lithium's Archer project and emerging exploration ventures like Wildcat Resources' Tabba Tabba Lithium Project. Macarthur is eagerly anticipating the results of the Ambient Noise Tomography (ANT) survey imaging undertaken in March/April 2023 at Tambourah South to see whether the mineralised zone thickens at depth.

If this system proves to extend to depth below the 1,500 metre surface expression, this may lead to a significant and promising new discovery for Infinity. Macarthur holds 21.65% of the issued equity and is the largest shareholder in Infinity, which is an Australian mining exploration company focused primarily on renewable rare earth minerals in Western Australia. Macarthur's spinoff to Infinity Mining, of its non-core renewable energy assets in 2021 has allowed the Company to commit its full focus to its Lake Giles Iron Project in Western Australia.

The Lake Giles Iron Project mineral resources include the Ularring magnetite resource (approved for development) comprising Indicated resources of 54.5 million tonnes at 47.2% Fe and Inferred resources of 26 million tonnes at 45.4% Fe; and the Lake Giles magnetite resource of 53.9 million tonnes (Measured), 218.7 million tonnes (Indicated) and 997 million tonnes (Inferred). The Mineral Resource and Ore Reserve estimates presented herein have previously been released to the ASX on March 21, 2022, including supporting JORC reporting tables. The Company confirms that it is not aware of any new information or data that materially affects the information included in the relevant market announcements and, in the case of Mineral Resources and Mineral Reserves that all assumptions and technical parameters underpinning the estimates in the relevant market announcement continue to apply and have not materially changed.