Citation: Bindi, L.; Roethlisberger, F.; Czank, M.; Bonazzi, P. (2001). Hardystonite from Franklin Furnace: a natural modulated melilite. American Mineralogist, 86, pp. 747-751.
Formula: Al0.07 Ca1.85 Fe0.02 Mg0.03 Mn0.04 Na0.14 O7 Pb0.01 Si2 Zn0.85
Chemical name: (Ca1.85 Na0.14 Pb0.01) (Zn0.85 Al0.07 Mg0.03 Mn0.04 Fe0.02) (Si2 O7)
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al2 Ca4 Fe2 Mg2 Mn2 Na4 O14 Pb4 Si4 Zn2 (Al Ca2 Fe Mg Mn Na2 O7 Pb2 Si2 Zn)
Multiplicity: 1