Figure 4
Variation of derived structural parameters with the average cationic radius of the M2 site for the Ge olivines of this study, partly in comparison with literature data: (a) average M2—O bond length, (b) individual M2—O bond lengths, (c) bond-length distortion (Renner & Lehmann, 1986) and (d) octahedral angle variance (Robinson et al., 1971); symbols as in Fig. 2. |