Citation: Domeneghetti, M. C.; Zema, M.; Tazzoli, V. (2005). Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite Sample: N.13, annealed at T = 650 C for t = 840 min. American Mineralogist, 90, pp. 1816-1823.
Formula: Al0.016 Ca0.191 Fe0.848 Mg0.919 Mn0.029 Na0.003 O6 Si1.984 Ti0.01
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al4 Ca8 Fe12 Mg8 Mn8 Na4 O24 Si8 Ti4 (Al Ca2 Fe3 Mg2 Mn2 Na O6 Si2 Ti)
Multiplicity: 1