>may also occur as ‘bog iron‘ where oxidation occurs in acidic environments (in swamps and bogs) leading to the formation of small clumps of iron-rich material

>may also occur as ‘bog iron‘ where oxidation occurs in acidic environments (in swamps and bogs) leading to the formation of small clumps of iron-rich material I've always been amazed at bog iron it seems like it shouldn't exist where it does and how it does. It must have been an amazingly valuable source rather than smashing rocks or spending time and effort searching for a rich vein of iron.