Pyrolusite is an oxidation product of weathered manganese minerals and also forms from stagnant shallow marine and freshwater bog and swamp deposits. Minerals such as rhodochrosite, rhodonite and hausmannite are often replaced by pyrolusite.

Where is pyrolusite from?

It is mined in Germany, Brazil, India, the United States, Cuba, Morocco, Ghana, and South Africa. Pyrolusite is used in the manufacture of steel and manganese bronze; in dry cells; and as a decolorizing agent in glass.

Is pyrolusite an oxide ore?

* Pyrolusite is an ore containing Manganese metal. * Manganese exists as Manganese oxide in Pyrolusite. * Therefore Manganese is present in the form of an oxide in Pyrolusite. So, the correct option is B.