Citation: Oberti, R.; Hawthorne, F. C.; Ungaretti, L.; Cannillo, E. (1993). The behaviour of Mn in amphiboles: Mn in richerite Sample: MR(3). European Journal of Mineralogy, 5, pp. 43-51.
Formula: Al0.2 Ca0.88 F0.3 Fe0.24 H1.7 K0.24 Mg4.28 Mn0.75 Na1.5 O23.7 Si7.84
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al20 Ca8 F4 Fe10 H4 Mg18 Mn12 Na8 O48 Si16 (Al10 Ca4 F2 Fe5 H2 Mg9 Mn6 Na4 O24 Si8)
Multiplicity: 1