AM_Clintonite-1M_1 Formula: Si1.08 Al3.75 Fe.07 Mg2.1 Ca O12 H2 Name: Clintonite-1M Unit cell: 5.197 9.002 9.812 90.0 100.32 90.0 , V=451.61 Space group: C12/M1 (12)

MacKinney J A , Mora C I , Bailey S W , American Mineralogist , 73 (1988) p.365-375, Structure and crystal chemistry of clintonite, Sample from Chichibu mine