Table 6.

Elemental concentration of mussel shells in percentages.

Element	Concentration, %
Calcium	95.88 ± 1.2 *
Phosphorus	1.61 ± 0.2 *
Magnesium	0.14 ± 0.04 **
Natrium	1.26 ± 0.3 *
Iron	0.69 ± 0.02 **
Others	0.42 ± 0.03 **

* p ˂ 0.01; ** p ˂ 0.001.