Keywords: Cookeite r structure.png en Crystal structure of cookeite LiAl<sub>4</sub> Si<sub>3</sub>Al O<sub>10</sub> OH <sub>8</sub> space group Cc projected along the b direction with perspective viewing Yellow silicon orange aluminum green lithium blue oxygen gray hydrogen All the octahedra in the layers containing lithium have in fact a mixed occupancy of lithium and aluminum the green octahedron being the only one with above 50 lithium The octahedra layer sandwiched by SiO<sub>4</sub> tetrahedra contain only aluminum Data source Zheng H and Bailey S W 1997 Refinement of the cookeite r structure American Mineralogist 82 9-10 1007-1013 own Perditax 2011-06-30 Cc-zero Cookeite Crystal structures in space group number 9 |