AM_Partheite
Formula: Ca2 Al4 Si4 O21 H10
Name: Partheite
Unit cell: 21.555 8.761 9.304 90.0 91.55 90.0 , V=1756.36
Space group: C12/C1 (15)

Engel N , Yvon K , Zeitschrift fur Kristallographie , 169 (1984) p.165-175, The crystal structure of partheite, Locality: Taurus mountains, Southwest Turkey