Gatta G D , Cappelletti P , Rotiroti N , Slebodnick C , Rinaldi R , American Mineralogist , 94 (2009) p.190-199, New insights into the crystal structure and crystal chemistry of the zeolite, phillipsite, Locality: Newer Volcanic Suite, Richmond, Melbourne, Victoria, Australia, Note: T = 100 K, Note: Chemistry and structural occupancy are not consistent