COL  ICSD Collection Code 67545
 DATE Recorded Aug 22, 1993; updated Jun 26, 1998
 NAME Sodium undecaaluminium oxide
 MINR Diaoyudaoite - from Diaoyudao Island, China
 FORM Na Al11 O17
      = Al11 Na O17
 FORM (Na.87 K.02 Ca.01) (Al10.84 Cr.15 Si.02) O17
 TITL Study on Crystal Structure of Diaoyudaoite
 REF  Hua Hsueh Hsueh Pao
      HHHPA 50 (1992) 527-532
 AUT  Zhu N-J, GuoÿF, LiÿY, ShenÿS-X, ChenÿL-R, LiÿA-C
 CELL a=5.602 b=5.602 c=22.626 à=90.0 á=90.0 ç=120.0
      V=614.9 D=3.18 Z=2
 SGR  P 63/m m c    (194) - hexagonal
 CLAS 6/mmm (Hermann-Mauguin) - D6h (Schoenflies)
 PRS  hP58
 ANX  AB11X17
 PARM Atom__No OxStat  Wyck ---X--- ---Y--- ---Z---  -SOF-
      O      1 -2.000   12k  1/6     1/3     0.0494
      O      2 -2.000    4f  2/3     1/3     0.0548
      O      3 -2.000    4e  0.      0.      0.1421
      O      4 -2.000   12k  1/2     1/2     0.1466
      O      5 -2.000    2c  1/3     2/3     1/4
      Na     1  1.000    2d  2/3     1/3     1/4
      Al     1  3.000    2a  0.      0.      0.
      Al     2  3.000    4f  1/3     2/3     0.0248
      Al     3  3.000   12k  1/3     1/6     0.1062
      Al     4  3.000    4f  1/3     2/3     0.1757
 WYCK k3 f3 e d c a
 ITF  O   1   U=0.009(4)
 ITF  O   2   U=0.005(5)
 ITF  O   3   U=0.004(5)
 ITF  O   4   U=0.006(2)
 ITF  O   5   U=0.053(16)
 ITF  Na  1   U=0.159(25)
 ITF  Al  1   U=0.008(4)
 ITF  Al  2   U=0.003(2)
 ITF  Al  3   U=0.007(2)
 ITF  Al  4   U=0.004(2)
 REM  M PDF 21-1096
 RVAL 0.092
 TEST Calculated density unusual but tolerable. (Code 23)