Facts About Thallium and Gadolinium
Interesting Facts
- Compounds of Thallium metal are highly Toxic.
- Thallium metal is being suspected as a human carcinogen.
  
- Gadolinium is not found free in nature, hence it is not a native metal.
- Gadolinium metal found in minerals like Monazite and Bastnaesite.
  
Sources
Found As a By-product, Ores of metals, Ores of Minerals
  
Found in Minerals, Mining
  
History
  
  
Who Discovered
William Crookes
  
Jean Charles Galissard de Marignac
  
Discovery
In 1861
  
In 1880
  
Abundance
  
  
Abundance In Sun
~0.0000001 %
  
26
~0.0000002 %
  
25
Abundance In Earth's Crust