My
periodic table poster
is now available!
Columbite.
Sample of Columbite, one of the components of coltan ore.
Source:
Jensan Scientifics
Contributor:
Theodore Gray
Acquired:
2 April, 2009
Text Updated:
17 October, 2009
Price:
Anonymous
Size:
0.5"
Composition:
Fe
Nb
2
O
6