Formula: Ca C O4 H2
Name: Monohydrocalcite
Unit cell: 10.5547 10.5547 7.5644 90.0 90.0 120.0 , V=729.79
Space group: P1131 (1)

Swainson I P , American Mineralogist , 93 (2008) p.1014-1018, The structure of monohydrocalcite and the phase composition of the, beachrock deposits of Lake Butler and Lake Fellmongery, South Australia, Locality: Lakes Butler and Fellmongery, Robe, South Australia