AM_Albite_42 Formula: Na.25 (Al.25 Ge.75) O2 Name: Albite Unit cell: 8.411 13.291 7.342 94.38 116.28 90.87 , V=732.68 Space group: C-1 (2)

Kroll H , Flogel J , Breit U , Lons J , Pentinghaus H , European Journal of Mineralogy , 3 (1991) p.739-749, Order and anti-order in Ge-substituted alkali feldspars, Sample: Na[AlGe3O8] synthesized at 980 deg C