AM_Tychite_2 Formula: Mg2 C4 Na6 S O16 Name: Tychite Unit cell: 13.9 13.9 13.9 90.0 90.0 90.0 , V=2685.62 Space group: FD3 (203)

Watanabe T , Scientific Papers of the Institute of Physical and Chemical Research , 21 (1933) p.40-62, Les structures cristallines de la northupite 2MgCO32Na2CO32NaCl, et de la tychite 2MgCO32Na2CO3Na2SO4