AM_Wonesite_1 Formula: Na.46 K.09 Mg2.13 Fe.42 Al1.27 Si3.12 O12 Name: Wonesite Unit cell: 5.31 9.18 9.754 96.2 96.5 89.9 , V=469.62 Space group: C-1 (2)

Kogure T , Miyawaki R , Banno Y , American Mineralogist , 90 (2005) p.725-731, The true structure of wonesite, an interlayer-deficient trioctahedral sodium mica