Table 4.

A comparison of the mineral constituents of Hen and Crocodile Egg Shells (Mwambungu et al., 2014).

Minerals	Hen Egg Shells (mg/100g)	Crocodile Egg Shells (mg/100g)
Copper	0.93 ± 0.00	0.97 ± 0.02
Cobalt	0.93 ± 0.01	0.79 ± 0.06
Manganese	0.93 ± 0.01	0.79 ± 0.05
Iron	7.64 ± 0.02	7.23 ± 0.14
Potassium	82.2 ± 0.7	44.0 ± 0.6
Sodium	168.9 ± 0.3	151.2 ± 1.2
Lead	1.36 ± 0.1	2.5 ± 0.2
Zinc	0.93 ± 0.02	0.79 ± 0.05
Chromium	6.0 ± 0.3	6.3 ± 0.3
Magnesium	247.7 ± 0.3	110.0 ± 1.3
Calcium	2534.4 ± 10.6	2271.7 ± 8.8
Phosphorus	139.8 ± 0.2	5.0 ± 0.1