AM_Microcline_1 Formula: K (Si3 Al) O8 Name: Microcline Unit cell: 8.643 12.929 7.19 90.1 116.2 89.6 , V=720.88 Space group: C-1 (2)

Ribbe P H , American Mineralogist , 64 (1979) p.402-408, The structure of a strained intermediate microcline in cryptoperthitic, association with twinned plagioclase, feldspar