Cancrinite Hassan I, Antao S M, Parise J B American Mineralogist 91 (2006) 1117-1124 Cancrinite: Crystal structure, phase transitions, and dehydration behaviour with temperature Locality: Dungannon Township, Bancroft, Ontario, Canada Sample: T = 800 C _database_code_amcsd 0004176 12.6886 12.6886 5.1924 90 90 120 P6_3 atom x y z occ Uiso Na1 2/3 1/3 .1089 .0893 Na2 .1295 .2525 .2958 .67 .0893 Ca2 .1295 .2525 .2958 .25 .0893 Al .0760 .4071 .7494 .0165 Si .3368 .4153 .75 .0165 C1 0 0 .692 .371 .074 C2 0 0 .933 .371 .074 O1 .2098 .4082 .6807 .0253 O2 .1037 .5557 .7323 .0253 O3 .0043 .3289 .0116 .0253 O4 .3201 .3595 .0613 .0253 OC1 .0378 .1208 .692 .371 .074 OC2 .0384 .1268 .933 .371 .074