AM_Tornebohmite-(Ce) Formula: Ce2 Si2 Al O9 H Name: Tornebohmite-(Ce) Unit cell: 7.383 5.673 16.937 90.0 112.04 90.0 , V=657.54 Space group: P121/C1 (14)

Shen J , Moore P B , American Mineralogist , 67 (1982) p.1021-1028, Tornebohmite, RE2Al(OH)[SiO4]2: Crystal structure and genealogy of, RE(III)Si(IV) <---> Ca(II)P(V) isomorphisms