RareX Limited engages in the exploration and development of mineral properties focused on rare earth elements, niobium, gallium, scandium, and phosphate deposits, primarily through hard rock carbonatite projects in Australia and emerging opportunities internationally. The company holds a portfolio of assets including its flagship 100%-owned Cummins Range Rare Earths and Phosphate Project in the Kimberley region of Western Australia, which features magnet-grade rare earths such as neodymium-praseodymium and battery-grade phosphates with a post-tax NPV8 exceeding $330 million; the Khaleesi Niobium Project in Western Australia's East Yilgarn region, an elevated-niobium alkaline intrusive complex adjacent to major deposits; the recently acquired Piper Project along trend from Nolans Bore and Luni niobium deposit; non-core interests like Mt Mansbridge, New South Wales gold projects, and Moroccan cobalt projects; and strategic equity stakes in Kincora Copper Limited, Cosmos Exploration, and Canada Rare Earth Corporation. Founded in 2003 and headquartered in Subiaco, Western Australia, RareX operates across segments including Rare Earths in Western Australia, Cobalt in Morocco, and corporate activities, targeting critical minerals supply chains for clean energy, defense, and technology sectors with customers encompassing industrial end-users, offtake partners, and government-aligned initiatives in allied nations. Recent developments include a June 2025 partnership with engineering firm Ausenco to accelerate the Mrima Hill critical minerals project in Kenya; a $50 million financing agreement in 2025 with GEM Global Yield via a US-aligned share subscription facility to fund Mrima Hill's rare earths and phosphate mine and processing facility, structured in two tranches subject to consortium arrangements; and an October 2025 non-binding memorandum of understanding with U.S. Strategic Metals to collaborate on processing at its Missouri hub, offtake, funding, and supply chain integration for RareX products, aligning with US-Australia critical minerals frameworks while advancing Cummins Range toward a mining license in early 2026.