AM_Sapphirine_2 Formula: Al8.05 Fe1.05 Mg3.15 Si1.75 O20 Name: Sapphirine Unit cell: 9.97 10.34 8.62 107.4 95.2 123.8 , V=666.62 Space group: P-1 (2)

Merlino S , Zeitschrift fur Kristallographie , 151 (1980) p.91-100, Crystal structure of sapphirine-1Tc, Locality: Wilson Lake, Labrador, Canada, Note: polytype sapphirine-1Tc