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