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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Saurabh 1 Best Answer
Correct answer should be (C). Gossan as you might be aware of the fact that, it is intensely oxidised and form primarily by the oxidation of sulfide minerals. Almost all the (that you will find Or observe in the vicinity of the surface oxidation) gossans are red, orange, or yellow, black gossans from manganese oxides such as pyrolusite(MnO2) manganite, and especially psilomelane form at the oxidized portion of manganese-rich mineral deposits. Go through the figure attached below to get the deeper insight about the respective ore.