AM_Butschliite
Formula: Ca K2 C2 O6
Name: Butschliite
Unit cell: 5.38 5.38 18.12 90.0 90.0 120.0 , V=454.21
Space group: R-3M (166)

Pabst A , American Mineralogist , 59 (1974) p.353-358, Synthesis, properties and structure of K2Ca(CO3)2, buetschliite