N˚

Samples

Ca

Mg

Si

P

S

K

I

1

“Bayan” Mongolian eggshell

85.7

2.7

0.5

7.0

0.5

0.6

3.0

2

Russian eggshell

82.8

4.5

0.3

11.0

0.6

0.9

-

3

Iodized egg shell

72.6

3.7

0,.6

18.1

2.0

0.4

2.6