Cordierite Armbruster T Physics and Chemistry of Minerals 12 (1985) 233-245 Ar, N2, CO2 in the structural cavities of cordierite, an optical and X-ray single-crystal study Sample: White Well N2 _database_code_amcsd 0007366 17.069 9.722 9.359 90 90 90 Cccm atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) O11 .24715 -.10283 .35880 .0087 .0070 .0070 -.0009 .0026 -.0008 O16 .06247 -.41634 .34886 .0071 .0092 .0071 -.0008 -.0001 -.0030 O13 -.17361 -.31038 .35843 .0085 .0082 .0066 .0013 -.0020 -.0015 O26 .04328 -.25020 0 .0055 .0143 .0144 -.0019 0 0 O21 .12240 .18528 0 .0095 .0099 .0151 .0049 0 0 O23 .16412 -.07946 0 .0133 .0050 .0151 -.0027 0 0 AlT11 .25 .25 .24993 .0065 .0051 .0049 .0013 0 0 SiT16 0 .5 .25 .0048 .0058 .0046 0 0 0 SiT21 .19240 .07796 0 .0048 .0039 .0047 .0001 0 0 SiT23 -.13535 .23772 0 .0040 .0049 .0048 -.0006 0 0 AlT26 .05078 .30847 0 .0045 .0050 .0047 .0006 0 0 MgM .33738 0 .25 .955 .0069 .0069 .0088 0 0 -.0000 FeM .33738 0 .25 .045 .0069 .0069 .0088 0 0 -.0000 MnM .33738 0 .25 .005 .0069 .0069 .0088 0 0 -.0000 NaCho 0 0 .25 .05 .19 .02 .15 0 0 0 NCh1/4a .0265 0 .25 .6 .085 .128 .052 0 0 -.005