AM_Terlinguaite_1 Formula: Hg2 O Cl Name: Terlinguaite Unit cell: 19.515 5.915 9.478 90.0 143.81 90.0 , V=646.00 Space group: C12/C1 (15)

Aurivillius K , Folkmarson L , Acta Chemica Scandinavica , 22 (1968) p.2529-2540, The crystal structure of terlinguaite Hg4O2Cl2, Locality: Terlingua, Texas, USA