1. State Key Laboratory of Geological Processes and Mineral Resources, School of the Earth Sciences and Resources, China University of Geosciences, Beijing, China
2. The National 305 Project Office of Xinjiang, Urumqi, China
3. Baotou Research Institute of Rare Earths, Baotou, Neimenggu, China
4. Center for Russian and Central EurAsian Mineral Studies, Natural History Museum, London, UK
5. Institute of Geology, National Academy of Sciences, Bishkek, Kyrgyzstan
6. School of the Environment, University of Windsor, Windsor, Ontario, Canada