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Table 2 Composition of phosphate rock in Egypt

From: Importance of phosphate pock application for sustaining agricultural production in Egypt

Oxide (%)

El Sebaiya PR

Safaga PR

Abu Tartur PR

P2O5

24.9

19.4

27.3

CaO

43.5

43.9

40.2

Fe2O3

2.27

1.2

2.93

SiO2

12.2

3.71

6.13

Al2O3

1.83

2.21

1.7

Na2O

1.62

1.73

0.72

K2O

0.12

0.16

0.13

MgO

1.52

5.3

1.26

Cl

0.55

0.45

0.17

CO2

8.66

17

7.25

SO3

3.73

1.35

8.75

F

1.16

1.21

3.0