Tantalum is a metal in group VB of the periodic table with atomic number 73, an atomic weight of 180.95, and a density of 16.6 Mg/m 3. Its melting point is 2996 C, and it boils at 5425 C. In the solid ...

Others included 24% tantalum and 32% niobium and 0.67% REOs ... This leaves Power Minerals now ‘moving rapidly’ to drilling ...