Citation: Mazzi, F.; Ungaretti, L.; Ronsbo, J.G.; dal Negro, A.; Petersen, O.V. (1979). The crystal structure of semenovite. American Mineralogist, 64, pp. 202-210.
Formula: Be6 Ca2.6 Ce2 F2 Fe0.5 H5.8 Mn0.5 Na6.8 O46 Si14
Chemical name: Ce2 Fe0.5 Mn0.5 Na6.8 Ca2.6 (Be6 Si14 O39.32) O0.88 (O H)5.8 F2
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Be24 Ce8 F4 Fe4 Mn4 Na8 O92 Si40 (Be6 Ce2 F Fe Mn Na2 O23 Si10)
Multiplicity: 1