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 = 648 C _database_code_amcsd 0004174 12.6696 12.6696 5.1755 90 90 120 P6_3 atom x y z occ Uiso Na1 2/3 1/3 .1038 .0791 Na2 .1278 .2525 .2949 .67 .0791 Ca2 .1278 .2525 .2949 .25 .0791 Al .0726 .4124 .7493 .0136 Si .3272 .4099 .75 .0136 C1 0 0 .582 .371 .067 C2 0 0 .830 .371 .067 O1 .2020 .4088 .6713 .0244 O2 .1056 .5586 .7416 .0244 O3 .0092 .3348 .0175 .0244 O4 .3171 .3584 .0662 .0244 OC1 .0862 .1107 .582 .371 .067 OC2 .0490 .1271 .830 .371 .067