Octahedra with 8 edges shared per MnO6 octahedron IX Y–F *380 Trigonal prism (in waimirite) VI Mn2+–O...600–715 In augelite, andalusite and vyuntspakhkite-(Y) 610–620 Isolated octahedron V VI Zr–O IV 3+...General Aspects of the Application … Fig. 1.15 X-, Y- and Z-polarized OH absorption spectra of diopside... Austria, measured on (100) and (010) plates (X, Y and Z are optical axes). The picture is drawn using...1999; Henry et al. 2011), where X = Na, Ca, K, □; Y = Li, Mg, Fe2+, Mn2+, Al, Cr3+, V3+, Fe3+, Ti; Z = |