Table 3: Descriptive statistics of REEs (ppm) and minor elements (ppm) in natural phosphate rock of Youssoufia.

Elementppm

Y143
La24.06
Ce13
Pr3.626
Nd17.52
Sm3.681
Eu1.008
Gd5.143
Tb0.8387
Dy5.672
Ho1.303
Er4.315
Tm0.6205
Yb4.2
Lu0.7843
ΣREEs228.408
ΣMEs3538.1