AM_Gobbinsite_1 Formula: Na2 Ca.47 (Al2.8 Si5.2) O22 H12 Name: Gobbinsite Unit cell: 10.1027 9.8016 10.1682 90.0 90.0 90.0 , V=1006.88 Space group: PMN21 (31)

Artioli G , Foy H , Mineralogical Magazine , 58 (1994) p.615-620, Gobbinsite from Magheramorne quarry, Northern Ireland, Locality: Magheramorne quarry, Northern Ireland