Solution:
Option (b) is the answer.
Pyrolusite is a manganese ore that is primarily composed of manganese dioxide.
It’s a black, amorphous mineral with a granular, fibrous, or columnar structure that can sometimes create reuniform crusts.
Solution:
Option (b) is the answer.
Pyrolusite is a manganese ore that is primarily composed of manganese dioxide.
It’s a black, amorphous mineral with a granular, fibrous, or columnar structure that can sometimes create reuniform crusts.