AM_Lawsonite Formula: Ca Al2 Si2 O10 H8 Name: Lawsonite Unit cell: 8.795 5.847 13.142 90.0 90.0 90.0 , V=675.82 Space group: CCMM (63)

Baur W H , American Mineralogist , 63 (1978) p.311-315, Crystal structure refinement of lawsonite, Locality: Tiburon Peninsula, Marin County, California, USA