AM_Selenium_9 Formula: Se Name: Selenium Unit cell: 3.846 3.846 5.095 90.0 90.0 120.0 , V=65.27 Space group: P3121 (152)

Keller R , Holzapfel W B , Schulz H , Physical Review B , 16 (1977) p.4404-4412, Effect of pressure on the atom positions in Se and Te, Locality: synthetic, Sample: at P = 6.57 GPa, Note: known as alpha phase with trigonal structure