AM_Acuminite Formula: Sr Al F4 (O2 H3) Name: Acuminite Unit cell: 13.223 5.175 14.251 90.0 111.61 90.0 , V=906.64 Space group: C12/C1 (15)

Krogh Andersen E , Ploug-Sorensen G , Leonardsen E , Zeitschrift fur Kristallographie , 194 (1991) p.221-227, The structure of acuminite, a strontium aluminium fluoride mineral, Locality: Ivigtut, Greenland