Columbite (Fe)
FeNb2O6
wdx 
edx
thin film 
thin foil
xrf
edx
thin film
thin foil
xrf
Location
Jos Plateau Nigeria
Dana Class
08.03.02.02
Strunz Class
04.DB.35
| Element | WT% |
| Mn | 1.84% |
| Fe | 14.22% |
| Nb | 55.46% |
| O | 28.48% |
| Compound | WT% |
| MnO | 2.38% |
| FeO | 18.29% |
| Nb2O5 | 79.33% |
