Citation: Brigatti, M. F.; Medici, L.; Saccani, E.; Vaccaro, C. (1996). Crystal chemistry and petrologic significance of Fe3+-rich phlogopite from the Tapira carbonatite complex, Brazil Sample: Tas22-1a. American Mineralogist, 81, pp. 913-927.
Formula: F0.14 Fe1.09 H1.78 K0.99 Mg2.7 Na0.01 O11.86 Si3.12
List type: noninterleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: F4 Fe14 Mg6 O28 Si8 (F2 Fe7 Mg3 O14 Si4)
Multiplicity: 1