Rock phosphate:
is ground rock that contains as much as 32 percent phosphate. It is not in a readily available form and is released very slowly.

Chemical Analysis For Rock

 

32%

31%

30%

29%

28%

27%

ELEMENT

RESULT (%)

P 2 O 5

32

31.5

30.2

29.5

28.30

27.1

CaO

49

50

49

48.0

45.61

47.2

MgO

0.05

0.62

0.62

0.62

2.09

0.71

AL 2 O 3

5.4

0.4

0.4

0.4

0.32

0.53

Fe 2 O 3

1.4

1.48

1.48

1.473

1.48

1.56

SiO 2

5.5

6.48

7.48

8.34

6.91

7.9

F

3.1

3.1

3.1

3.00

2.70

2.66

CL

0.05

0.09

0.1

0.11

0.12

0.13

Na2O

0.4

0.50

0.50

0.56

0.56

0.56

SO4

0.8

1.00

1.00

1.00

1.20

1.1

L.O.I

7.1

7.68

7.68

8.13

7.98

10.16

Co 2

5.1

5.6

5.6

6.45

7.13

7.7

CaCo 3

11.8

11.62

12.72

14.66

13.63

17.5

Humidity

1.5%

2%

2%

2%

3.64%

2%

BPL

70%

68%

67%

65.5%

61.87

64%

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