1. Fersman Mineralogical Museum of RAS, Leninsky pr. 18/2 Moscow, 119071 Russia; anatoly.kasatkin@gmail.com
2. Institute of Geology and Geochemistry UB RAS, ul. Akademika Vonsovskogo 15, Yekaterinburg, 620016 Russia
3. Mineralogical Museum «Shtufnoi Kabinet», ul. Vatutina 17a, Severouralsk, Sverdlovsk oblast, 624480 Russia
4. Masaryk University, Kotlarska 2, Brno, 61137 Czech Republic
5. University of Padova, Via Gradenigo 6, Padova, 35131 Italy
6. Institute of Physics ASCR, v.v.i., Na Slovance 1999/2, Prague, 18221 Czech Republic
7. University of Copenhagen, Ostervoldgade 10, DK-1350, Copenhagen, Denmark
8. Fersman Mineralogical Museum of RAS, Leninsky pr. 18/2 Moscow, 119071 Russia
9. South Urals Federal Research Center of Mineralogy and Geoecology UB RAS, Institute of Mineralogy, Miass, Chelyabinsk oblast, 456317 Russia