AM_Orthoclase_3 Formula: Si3 Al K O8 Name: Orthoclase Unit cell: 8.5632 12.963 7.2099 90.0 116.073 90.0 , V=718.89 Space group: C12/M1 (12)

Prince E , Donnay G , Martin R F , American Mineralogist , 58 (1973) p.500-507, Neutron diffraction refinement of an ordered orthoclase structure