Citation: Johnsen, O.; Grice, J. D. (1999). The crystal chemistry of the eudialyte group Sample: #5. The Canadian Mineralogist, 37, pp. 865-891.
Formula: Ca1.77 Ce1.08 Cl0.721 Fe1.425 H1.269 K0.195 La0.63 Mn3.72 Na13.59 Nb0.93 Nd0.33 O76.769 Pr0.09 Si25 Y0.24 Zr3.18
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Ca9 Ce27 Cl27 Fe18 K9 La27 Mn18 Na45 Nb12 Nd27 O255 Pr9 Si78 Y9 Zr18 (Ca3 Ce9 Cl9 Fe6 K3 La9 Mn6 Na15 Nb4 Nd9 O85 Pr3 Si26 Y3 Zr6)