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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Raghubeer rai
option B is correct ans from top to bottom beneath the earth, sequences of zone is - Zone minerals Gossan Zone - Limonite Leached Zone - No specific mineral Oxide Zone- malachite, azurite, cuprite, chrysocolla (these are mainly oxides, hydroxides) Enrichment Zone- chalcocite, covellite, bornite (all are sulfides ) Primary mineralisation Protore- chalcopyrite