Annexes
R² = 0,4801
0
50
100
150
200
250
0
5
10
15
20
25
Zn
Ni
Boudouaou El Bahri
R² = 0,4741
0
5
10
15
20
25
0
2
4
6
8
10
12
Mn
Ni
Surcouf
R² = 0,5917
0
5
10
15
20
25
0
2
4
6
8
10
12
Mn
Cu
Surcouf