Periodic Table · element
Niobium
Nb · Z 41
- atomic number
- 41
- atomic mass
- 92.906
- notation
- Nb
- group
- 5: Vanadium
- period
- 5
- state0c
- Solid
- state20c
- Solid
- occurrence
- Primordial
- density
- 8.57
- melting pt
- 2477
- boiling pt
- 4744
- discovered
- 1801
- abundance
- 20
- ore grade
- 17000
- ore minerals
- pyrochlore
- mined as
- Primary
extraction
One deposit at Araxá in Brazil supplies most of the world. Pyrochlore is floated to concentrate and reduced aluminothermically to ferroniobium, a fraction of a percent of which makes steel stronger and lighter.
categories
#Transition Metal#Metal
Referenced by
equation
machine
mine
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