Bayan Obo ore deposit CONCENTRATION OF MINERALS
More than 90% rare earth elements in ore of existed in independent minerals, and about 4%~7% of REE dispersed in iron minerals and fluorite. Total 15 kinds of rare earth minerals are found but the principal ones are bastnaesite and monazite with the ratio of 7:3 or 6:4, whereas magnetite and hematite are the dominant Feore minerals.