AM_Gypsum_10 Formula: Ca S O6 H4 Name: Gypsum Unit cell: 6.136 14.912 5.556 90.0 115.73 90.0 , V=457.97 Space group: C12/C1 (15)

Comodi P , Nazzareni S , Zanazzi P F , Speziale S , American Mineralogist , 93 (2008) p.1530-1537, High-pressure behavior of gypsum: A single-crystal X-ray study, Locality: Valle di Caramanico, Abruzzo, Italy, Note: P = 3.94 GPa