Niobium is a metal in groupVB of the periodic table with atomic number 41, an atomic weight of 92.91, and a density of 8.4 Mg/m 3. Its melting point is 2468 C, and it boils at 3300 C. The electronic ...

Tardiff has a MRE of of 192.7-million tonnes at 1.3% total rare earth oxide and 0.3% niobium, containing 636 000 t of neodymium oxide and praseodymium oxide (NdPr) and 578 000 tonnes of Nb₂O₅.

CBMM has a mine with over 800 million tons of niobium reserves and holds 82% of the world niobium market share. A consortium of five Chinese companies has acquired a 15% stake in Brazil's ...