Ussingite
Rossi G, Tazzoli V, Ungaretti L
American Mineralogist 59 (1974) 335-340
The crystal structure of ussingite
Locality: Lovozero alkali massif, Russia
_database_code_amcsd 0000399
7.256 7.686 8.683 90.75 99.75 122.48 P-1
atom     x      y     z  B(1,1)  B(2,2)  B(3,3)  B(1,2)  B(1,3)   B(2,3)
Al   .2422  .0457 .8551 .003788 .004469 .002458 .002209 .000854  .000758
Si1  .2463  .1935 .3626 .003623 .003823 .002521 .001822 .000658  .000437
Si2  .3203  .4147 .6924 .004717 .004041 .002127 .001943 .000971  .000672
Si3  .7014  .1041 .8129 .003229 .005076 .002433 .002751 .001687  .001026
Na1  .1759  .3924 .0555 .014721 .011833 .005361 .008533 .001534  .000218
Na2  .8214  .2342 .4421 .015378 .010061 .004644 .007916 .002133  .001652
H     .979   .405  .765
O1   .0021  .1358 .2792 .006931 .007376 .006091 .003748 .001057 -.000105
O2   .1419  .4749 .6515 .008921 .010164 .006054 .006000 .002304  .002923
O3   .2767 -.0021 .3473 .009870 .007111 .003092 .005536 .001337  .000749
O4   .3010  .2970 .8489 .008492 .006090 .003114 .003636 .001210  .000598
O5   .4442  .0224 .7955 .007278 .009345 .005575 .004941 .001388  .000767
O6   .4231  .3818 .2768 .007218 .007946 .004085 .002534 .001959  .001688
O7   .7980  .0344 .9625 .013162 .014394 .003821 .009997 .002274  .002850
O8   .8580  .3557 .8210 .008932 .006853 .006657 .002768 .003279  .000000
O9   .2973  .2604 .5485 .015887 .009418 .002871 .007275 .001241  .000647