Unit 4 Reading: Sedimentary Processes - SERCWeathering processes break rocks into smaller pieces. . Rust is also an example of chemical weathering; in that case, iron minerals oxidize . Chemical weathering can only act on the surface of a rock or mineral, or . For example, imagine that a rock is made of.iron ore was formed by chemical sedimentary processes,Sedimentary ore forming process - SlideShareSep 17, 2017 . Sedimentary Ore Forming Process By Abdul Bari Qanit M.Sc. Geology .. 6. b) Chemically formed Sediments: formed from materials derived by chemical . Valuable deposits of iron ore, manganese, bauxite, clays, nickel,.
iron ore was formed by chemical sedimentary processes