Citation: Griffen, D. T.; Hatch, D. M.; Phillips, W. R.; Kulaksiz, S. (1992). Crystal chemistry and symmetry of a birefringent tetragonal pyralspite75-grandite25 garnet. American Mineralogist, 77, pp. 399-406.
Formula: Al2 Ca0.75 Fe1.89 Mg0.24 Mn0.09 O12 Si3
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al16 Ca24 Fe24 Mg24 Mn24 O96 Si24 (Al2 Ca3 Fe3 Mg3 Mn3 O12 Si3)
Multiplicity: 1