AM_Selenium_1 Formula: Se Name: Selenium Unit cell: 9.054 9.083 11.601 90.0 90.81 90.0 , V=953.94 Space group: P121/N1 (14)

Cherin P , Unger P , Acta Crystallographica, Section B , 28 (1972) p.313-317, Refinement of the crystal structure of alpha-monoclinic Se, Locality: synthetic, Sample: at T = 26 C, Note: structure known as alpha phase