Organometallic compounds of the rare earth elements have shown many interesting small molecule activation reactions,including hydrocarbon C-H bond cleavage,in the last 30 years.
Apatite is an important host mineral in igneous and metamorphic rocks for production of phosphate fertilizers and phosphoric acid.Deposits of apatite ores are the major source for rare earth elements(
Baotou mixed rare earth ores are mainly treated with sulphuric acid method,including sulfatizing roasting,leaching with water,extracting with HDEHP or HEH/EHP.