Formula: Na Ca16 Si23 Al O82 H28
Name: Gyrolite
Unit cell: 9.74 9.74 22.4 95.7 91.5 120.0 , V=1824.13
Space group: P-1 (2)

Merlino S , Mineralogical Magazine , 52 (1988) p.377-387, Gyrolite: its crystal structure and crystal chemistry, Locality: Qarusait, Greenland, Note: x-coordinate of O102 adjusted to match reported bond lengths, Note: occupancies invented to match formula, Locality: Qarusait, Greenland