Facts About Niobium and Holmium
Interesting Facts
- Niobium metal was used to get called Columbium in past.
- Niobium metal found freely in nature (abundance).
  
- Holmium metal is very soft and malleable.
- Holmium metal is well known for its corrosion resistivity.
  
Sources
By-product of Tin Extraction, Found in Minerals, Mining, Ores of Minerals
  
Found in Minerals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
Charles Hatchett
  
Marc Delafontaine
  
Discovery
In 1801
  
In 1878
  
Abundance
  
  
Abundance In Sun
~0.0000004 %
  
23
~-9999 %
  
Abundance In Earth's Crust