AM_Calcite_12 Formula: Ca C O3 Name: Calcite Unit cell: 4.988 4.988 17.068 90.0 90.0 120.0 , V=367.76 Space group: R-3C (167)

Maslen E N , Streltsov V A , Streltsova N R , Ishizawa N , Acta Crystallographica, Section B , 51 (1995) p.929-939, Electron density and optical anisotropy in rhombohedral carbonates., III. Synchrotron X-ray studies of CaCO3, MgCO3 and MnCO3