Schwartz K B , Leong D B , McConville R L , Physics and Chemistry of Minerals , 20 (1994) p.563-574, Structural chemistry of synthetic cordierite: evidence for solid solutions, and disordered compositional domains in Bi-flux-grown Mg-cordierites, Sample: Synthesized in 5 at% bismuth oxide flux at 1000 C for 12 hours, Note: tetrahedral site occupancies are assumed, not refined