| Site |
P2O5 |
SiO2 |
Al2O3 |
Fe2O3 |
CaO |
MgO |
Na2O |
K2O |
| El-Hamrawein |
28 |
14.5 |
0.74 |
4.2 |
45 |
0.9 |
0.8 |
0.9 |
| El-Quseir |
30 |
15.3 |
0.52 |
3.1 |
47 |
1.1 |
0.6 |
1.3 |
| Safaga |
33 |
11.2 |
0.33 |
2.3 |
41 |
0.8 |
1.1 |
1.2 |