Concentrating Mill Wastes are the Source of Pollution of Human Environment and Natural Ecosystems with Heavy Metals: A Case Study in Primorsky Krai, Russian Federation

Table 3

Chemical composition of fibroferrite

Element	Weight (%)	Atomic (%)	Oxide form
			Formula	Mass (%)
Mg	1.90	1.84	MgO	3.14
Al	0.89	0.78	Al2O3	1.68
S	24.72	18.16	SO3	61.72
Mn	1.66	0.71	MnO	2.14
Fe	21.68	9.15	FeO	27.89
Zn	1.21	0.44	ZnO	1.51
As	1.46	0.46	As2O3	1.92
O	46.49	68.47
Total	100.00			100.00