Normally, for the ore to be of commercial importance, it must contain 45-50% Mn. The SiO2 content should not be over 10%, the phosphorus content of 50% ore can be 0.3%, and the (P) content of 30% ore can be 0.1%. Al2O3 can be up to 3%. Sulfur is a harmful element.

The most commercially produced manganese ore minerals are;

Pyrolusite : MnO2 , Psilomelan : MnO2 Manganite : Mn2O3.H2O

Ayyıldız Madencilik, Some of our Manganese fields

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