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 оblast, 624480 Russia
4. Masaryk University, Kotlářská 2, Brno, 61137 Czech Republic
5. Università di 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, Östervoldgade 10, DK-1350, Copenhagen, Denmark
8. Institute of Mineralogy, South Urals Federal Research Center of Mineralogy and Geoecology UB RAS, Miass, Chelyabinsk oblast, 456317 Russia