*3.5. Atomic Positions*

Selected data of the refined atomic positions for geikielite as refined by the Rietveld method, are given in Table 7.

**Table 7.** Atomic positions for MgTiO3 in sample GQ as function of temperature (hot-stage).


After cooling to room temperature, the sample returned into the initial as-received RT crystallographic data of qandilite and geikielite. The lattice parameters were in (Å): MgTi2O4 (qandilite) a = 8.4404 (6) and MgTiO3 (geikielite): a = 5.054 (1); c = 13.905 (2). The atomic positions for the geikielite are given in Table 7 (column GQPOST).
