Montana is geologically diverse and hosts a variety of critical and rare minerals, earning its moniker as the Treasure State due to its immense wealth of underground resources. Among the notable critical and rare earth minerals found within its borders are deposits of platinum and palladium, primarily located in the Stillwater Complex along the northern edge of the Beartooth Mountains, which represents the only significant primary producer of these platinum-group metals in the entire United States. Additionally, the state contains occurrences of rare earth elements, such as light and heavy lanthanides, embedded within unique geological formations, carbonatites, and placer deposits across various counties. Montana is also known for deposits of fluorspar, barite, garnet, and various specialty metals like cobalt, nickel, and lithium, which have gained heightened strategic importance due to their vital role in modern green energy technologies, battery manufacturing, and aerospace applications. Geologists and mining companies continue to evaluate these occurrences using modern exploration techniques to determine if extracting these specialized and rare mineral commodities can become economically viable while adhering to strict environmental standards.