AM_Na2CaGe2O6
Formula: Ge2 (Ca1.003 Na1.997) O6
Name: Na2CaGe2O6
Unit cell: 10.788 10.788 13.46 90.0 90.0 120.0 , V=1356.62
Space group: R-3M (166)

Nishi F , Takeuchi Y , Acta Crystallographica, Section C , 46 (1990) p.544-546, Structure of sodium calcium germanate Na2CaGe2O6