1. Faculty of Geology Voronezh State University Voronezh Voronezh Oblast Russia
2. Stary Oskol Branch Russian State University for Geological Prospecting Stary Oskol Belgorodskaya Oblast Russia
3. Laboratory of Petrography Institute of Ore Geology, Petrography, Mineralogy and Geochemistry (IGEM) RAS Moscow Russia
4. School of Earth Sciences and Resources China University of Geosciences Beijing Beijing China
5. Department Earth Sciences University of Adelaide South Australia Australia