Qandilite Millard R L, Peterson R C, Hunter B K American Mineralogist 80 (1995) 885-896 Study of the cubic to tetragonal transition in Mg2TiO4 and Zn2TiO4 spinels by 17O MAS NMR and Rietveld refinement of X-ray diffraction data Sample: RLM510, Mg2TiO4 _database_code_amcsd 0001751 6.00689 6.00689 8.41547 90 90 90 P4_122 atom x y z occ Biso Mg .2529 .2529 .375 .19 Ti1 0 .2385 0 .087 .29 Mg1 0 .2385 0 .913 .29 Ti2 .5 .2470 0 .913 .29 Mg2 .5 .2470 0 .087 .29 O1 -.0252 .7305 .2500 .04 O2 .5131 .2638 .2307 .04