PON Leger J M, Haines J, Chateau C, Bocquillon G, Schmidt M W, Hull S, Gorelli F, Lesauze A, Marchand R Physics and Chemistry of Minerals 28 (2001) 388-398 Phosphorus oxynitride PON, a silica analogue: structure and compression of the cristobalite-like phase; P-T phase diagram Note: quartz structure type _database_code_amcsd 0008558 4.757 4.757 5.2460 90 90 120 *P3_221 0 0 .666666666666667 atom x y z occ P .4724 0 0 O .4053 .2669 .1159 .5 N .4053 .2669 .1159 .5