Loparite: The Complex Russian Oxide
Loparite is a complex mineral mined primarily in Russia, serving as a unique source of both rare earths and critical metals like Niobium.
Niobium
Fergusonite: The Niobium-Yttrium Ore
Fergusonite is a valuable ore for both Niobium and heavy rare earths like Yttrium and Dysprosium.