Clintonite-1M_7 Formula: Si1.24 Al3.42 Ca Fe.12 Mg2.22 O12 H2 Name: Clintonite-1M Unit cell: 5.203 9.026 9.811 90.0 100.27 90.0 , V=453.37 Space group: C12/M1 (12)
Alietti E , Brigatti M F , Poppi L , American Mineralogist , 82 (1997) p.936-945, Clintonite-1M: Crystal chemistry and its relationships to closely, associated Al-rich phlogopite, Sample: Cli8d