ioneer, a substantial foundation, and Sibanye-Stillwater, an international precious metals mining company, agreed to form a joint venture, a Rhyolite Ridge lithium-boron project located in Nevada, in a $490m deal. Sibanye-Stillwater contributes $490m for a 50% interest. "Sibanye-Stillwater, with its proven track record of developing and operating major mining projects including operations in the United States, its commitment to developing and maintaining an inclusive and sustainable culture, and its determination to become a major force in the battery materials supply chain, is an excellent partner for ioneer to jointly realize the promise of Rhyolite Ridge. With a strong strategic partner in place, we can now look to finalise the debt financing for the Project and move towards construction. We are confident in the alignment of our companies. Our partnership with Sibanye-Stillwater will allow ioneer to unlock the tremendous, long- term value of Rhyolite Ridge," James Calaway, ioneer Executive Chairman.