AM_Tilleyite Formula: Ca5 Si2 C2 O13 Name: Tilleyite Unit cell: 15.082 10.236 7.572 90.0 105.17 90.0 , V=1128.23 Space group: P121/A1 (14)

Grice J D , The Canadian Mineralogist , 43 (2005) p.1489-1500, The structure of spurrite, tilleyite and scawtite,, and relationships to other silicate-carbonate minerals, Locality: Cornet Hill, Apuseni Mountains, Romania