1. CSIRO Mineral Resources, 26 Dick Perry Avenue, Kensington, Western Australia 6151, Australia
2. Department of Earth Science, Carleton University, 2115 Herzberg Laboratories, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada
3. ‡ Present address: School of Earth Resources, China University of Geosciences, Wuhan, 430074, China.
4. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences (CAS), No.19 Beituchengxi Road, Chaoyang District, Beijing 100029, China
5. Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
6. Oulu Mining School, University of Oulu, P.O. Box 8000, FI-90014, Finland
7. § Present address: Fortescue Metals Group Ltd., 87 Adelaide Terrace, East Perth, Western Australia 6004, Australia.
8. School of Earth and Environmental Sciences, Cardiff University, Park Place, Cardiff CF10 3AT, U.K.