Mantle Minerals Limited (ASX:MTL) is an Australia-based mineral exploration and development company focused on acquiring and advancing projects prospective for gold, nickel, nickel-copper sulphides, platinum group metals, lithium, and volcanogenic massive sulphide deposits; its principal assets include the Yule River Project, covering 86 square kilometers astride the Sholl Shear Zone in the Pilbara region of Western Australia and prospective for gold, nickel-copper sulphides, and VMS mineralization, and the Pardoo Project, which hosts the shallow Highway nickel sulphide deposit with a JORC-compliant resource adjacent to the Great Northern Highway alongside regional targets with nickel and PGM mineralization; operations span Australia, including lithium exploration tenements in Nevada, USA. Founded in 1998 and headquartered at 56 Kings Park Road, West Perth, the company, formerly known as Caeneus Minerals until its name change in December 2022, targets greenfields and advanced opportunities in world-class mining jurisdictions such as the Pilbara. In a transformational development, Mantle completed the AU$13.5 million cash sale of its Mt Roe Mining subsidiary to Northern Star Resources in 2025, retaining Yule River and Pardoo while strengthening its cash position to accelerate drilling, geophysical programs, resource definition, and strategic acquisitions of high-quality gold and base metal projects; proceeds also support a AU$250,000 placement funding round.