Shares of Australian rare earth companies surge on $8.5 billion U.S. critical minerals deal
1. U.S. and Australia sign $8.5 billion minerals deal targeting critical metals. 2. Alcoa's gallium project is a key focus of the new agreement. 3. Alcoa's shares rose nearly 10% following the news of the deal. 4. Investment aims to secure materials vital for defense and tech sectors. 5. China's export control shifts are increasing demand for alternative supply chains.