After Professor Vojtĕch Rosický (30 October 1880 Prague, Austria-Hungary – 9 February 1942 Mauthausen, Nazi Germany), former Director of the Mineralogical and Petrological Institute of Masaryk University, Brno, Czech Republic.
Sulphur Group. The densest form of solid S. Can be prepared by slowly cooling molten sulfur that has been heated above 150°C. Dimorphous with bothsulphur (α-sulphur), to which it changes in time at room temperature, andβ-sulphur.