Manganese ore, as oxides:
Manganese [Mn]			min. -	20%
Iron [Fe]				min. -	10%
Silicium dioxide [SiO2]		max.-	38%
Phosphor [P]			max.-	0.4%
Manganese carbonate, natural as ore:
Manganese [Mn]			min. -	27%
Iron [Fe]				min. -	10%
Silicium dioxide [SiO2]		max.-	36%
Phosphor [P]			max.-	0,4%
Manganese oxide – Technical: MnO
Specifications		      UM		
Appearance	   			brown powder
Manganese: [Mn]		        %		min. 61
Alkali metals: [Na2O+K2O]	        %		max. 0.09
Silicium dioxide: [SiO2]	[...]