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The Igarapé Bahia, situated in the Carajás Mineral Province, is a world-class example of a lateritic gold deposit. It has developed under tropical weathering conditions since at least the Eocene and resulted in a regolith cover of at least 100m thickness. The regolith is dominated by ~80m thick ferruginous saprolite containing gossan bodies that constitute the main Au ore. Above saprolite the regolith...
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