AM_Wonesite Formula: Na.55 (Mg2.58 Fe.42) (Si3.2 Al.8) O12 Name: Wonesite Unit cell: 5.312 9.163 9.825 90.0 103.18 90.0 , V=465.62 Space group: C12/M1 (12)

Spear F S , Hazen R M , Rumble D , American Mineralogist , 66 (1981) p.100-105, Wonesite: A new rock-forming silicate from the Post Pond Volcanics, Vermont