Institute of Experimental Mineralogy
                 Russian Academy of Sciences
     -------------------------------------------------
           142432, Chernogolovka, Moscow district
             A.V. Chichagov  +7(496)52-22320

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          ***      W W W - X R A Y P O L       ***
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MAUROGEMMIITE

2, syn

Ti(9)Fe(3)[Ti(0.7)Fe(0.3)]O(3)


Hexagonal  P 6(3)/mmc  Z = 2

R =0.097

16 .2 .26

Ref.Str.:

         Rogl P., Rupp B., Wiesinger G., Schefer J., Fischer, P. (1985)

         * J. Less-Common Metals, 113, 103 - 111

         doi:10.1016/0022-5088(85)90152-3

          

         L: $Ti10 Al0.07 Si0.51 Fe3.23 Ni0.11 O2.91$

         R: N.A.D.

                   Initial data from BDM-file 

   Lattice parameters (cub. angs.,degr.):

             a =   7.8329   alpha =   90.0 
             b =   7.8329   beta  =   90.0 
             c =   7.8729   gamma =  120.0 

    Unit cell volume (cub. angs.) =   418.32

    Molar volume ( cub.cm/mol.) =   125.99

  Co-ordinates, thermal parameters, occupation for atomic positions:

NoP   x/a     y/b     z/c    B(j)   atom  / occupation

   1 0.0     0.0     0.5      0.0    Ti    = 0.7 , Fe    = 0.3 
   2 0.2046  0.4093  0.0638   0.0    Ti    = 1.00
   3 0.5479  0.0957  0.25     0.0    Ti    = 1.00
   4 0.8869  0.7737  0.75     0.0    Fe    = 1.00
   5 0.5     0.0     0.0      0.0    O     = 1.00


  Co-ordinates for all atomic positions :

   No       NoP      x/a        y/b       z/c 

     1       1     0.0        0.0        0.5   
     2       2     0.2046     0.4093     0.0638
     3       3     0.5479     0.0957     0.25  
     4       4     0.8869     0.7737     0.75  
     5       5     0.5        0.0        0.0   
     6       2     0.5907     0.7953     0.0638
     7       2     0.2047     0.7954     0.0638
     8       3     0.9043     0.4522     0.25  
     9       3     0.5478     0.4521     0.25  
    10       4     0.2263     0.1132     0.75  
    11       4     0.8868     0.1131     0.75  
    12       5     0.0        0.5        0.0   
    13       5     0.5        0.5        0.0   
    14       1     0.0        0.0        0.0   
    15       2     0.7954     0.5907     0.5638
    16       3     0.4521     0.9043     0.75  
    17       4     0.1131     0.2263     0.25  
    18       5     0.5        0.0        0.5   
    19       2     0.4093     0.2047     0.5638
    20       2     0.7953     0.2046     0.5638
    21       3     0.0957     0.5478     0.75  
    22       3     0.4522     0.5479     0.75  
    23       4     0.7737     0.8868     0.25  
    24       4     0.1132     0.8869     0.25  
    25       5     0.0        0.5        0.5   
    26       5     0.5        0.5        0.5   
    27       2     0.2046     0.4093     0.4362
    28       2     0.5907     0.7953     0.4362
    29       2     0.2047     0.7954     0.4362
    30       2     0.7954     0.5907     0.9362
    31       2     0.4093     0.2047     0.9362
    32       2     0.7953     0.2046     0.9362


X-ray density (g/cm cub.)   =      5.53

MU (1/cm) =    1219.578    Mass attenuation coefficient (cm**2/g) =    220.49 

 Selected interatomic distances (cation-anion,anion-anion):

 NoP    Atom              Rad.sph.      C.N.    Distance     NoP N.
                           (angs.)               (angs.)

    1   Ti   ,Fe             2.592        6
                                                 2.4961       4
                                                 2.4961       4
                                                 2.496        4
                                                 2.4961       4
                                                 2.4961       4
                                                 2.496        4
    2    Ti                  2.568        3
                                                 2.1128       5
                                                 2.1136       5
                                                 1.9209       4
    3    Ti                  2.568        2
                                                 2.0725       5
                                                 2.0725       5
    4    Fe                  3.144        2
                                                 2.6588       4
                                                 2.6588       4
    5    O                   3.264        0

  X-ray diffraction powder data (II),  X-Ray W.L. =   1.78892(angs.):

  No   H   K   L   Theta 2*Theta    S       LPG   MF        F          I int.
                    ( degree )                                         *100

    1   1   0   0  7.577  15.154   0.074  112.08    6       43.0      710.5
    2   1   0   1 10.024  20.047   0.097   63.1    12       11.9       61.0
    3   0   0   2 13.134  26.268   0.127   35.88    2       12.3        6.2
    4   1   1   0 13.202  26.404   0.128   35.49    6       23.6       67.6
    5   1   0   2 15.231  30.462   0.147   26.17   12       23.3       97.6
    6   2   0   0 15.291  30.581   0.147   25.95    6       29.6       78.1
    7   2   0   1 16.687  33.375   0.161   21.49   12      132.7     2595.6
    8   1   1   2 18.794  37.588   0.18    16.57   12       11.0       13.8
    9   2   0   2 20.372  40.743   0.195   13.86   12       26.4       66.4
   10   2   1   0 20.418  40.836   0.195   13.79   12       66.1      413.5
   11   1   0   3 21.436  42.871   0.204   12.36   12      106.2      957.1
   12   2   1   1 21.524  43.049   0.205   12.25   24      103.2     1790.7
   13   3   0   0 23.302  46.604   0.221   10.24    6      165.1      956.8
   14   3   0   1 24.303  48.607   0.23     9.31   12       32.8       68.5
   15   2   1   2 24.604  49.207   0.233    9.05   24      155.2     2991.7
   16   2   0   3 25.528  51.056   0.241    8.32   12       41.2       97.1
   17   0   0   4 27.03   54.059   0.254    7.31    2      250.1      522.5
   18   3   0   2 27.142  54.283   0.255    7.24   12       63.6      201.0
   19   2   2   0 27.179  54.358   0.255    7.22    6      153.5      583.4
   20   1   0   4 28.242  56.484   0.265    6.62   12       50.7      116.6
   21   3   1   0 28.387  56.774   0.266    6.54   12        4.2        0.8
   22   2   1   3 29.191  58.382   0.273    6.14   24       98.0      809.4
   23   3   1   1 29.262  58.525   0.273    6.11   24       72.5      440.4
   24   1   1   4 30.571  61.143   0.284    5.54   12       12.9        6.3
   25   2   2   2 30.675  61.35    0.285    5.49   12       84.1      266.4
   26   3   0   3 31.477  62.954   0.292    5.19   12      135.3      651.7
   27   2   0   4 31.697  63.394   0.294    5.11   12       87.5      268.3
   28   3   1   2 31.798  63.597   0.295    5.08   24       24.5       41.8
   29   4   0   0 31.832  63.664   0.295    5.06    6       26.4       12.1
   30   4   0   1 32.652  65.303   0.302    4.79   12       48.0       75.9
   31   2   1   4 34.954  69.907   0.32     4.16   24       35.8       73.0
   32   4   0   2 35.05   70.101   0.321    4.13   12       92.3      241.3
   33   3   2   0 35.083  70.165   0.321    4.13   12       15.8        7.0
   34   1   0   5 35.673  71.347   0.326    3.99   12       43.8       52.5
   35   3   1   3 35.801  71.603   0.327    3.96   24       47.5      122.4
   36   3   2   1 35.865  71.73    0.328    3.95   24        3.8        0.8
   37   3   0   4 37.049  74.098   0.337    3.71   12       61.4       95.9
   38   4   1   0 37.175  74.35    0.338    3.69   12       18.1        8.2
   39   4   1   1 37.94   75.88    0.344    3.55   24       31.6       48.7
   40   3   2   2 38.173  76.347   0.345    3.52   24       52.0      130.6
   41   2   0   5 38.777  77.554   0.35     3.42   12      142.2      474.8
   42   4   0   3 38.901  77.802   0.351    3.4    12      110.5      284.9
   43   2   2   4 40.116  80.231   0.36     3.24   12       60.4       81.0
   44   4   1   2 40.208  80.416   0.361    3.23   24       14.4        9.1
   45   3   1   4 41.124  82.247   0.368    3.12   24       33.9       49.2
   46   5   0   0 41.246  82.492   0.369    3.11    6       93.9       94.1
   47   2   1   5 41.808  83.616   0.373    3.06   24       72.8      222.2
   48   3   2   3 41.93   83.859   0.374    3.04   24      125.3      655.7
   49   5   0   1 41.991  83.981   0.374    3.04   12       93.3      181.3
   50   0   0   6 42.975  85.949   0.381    2.96    2      210.2      149.3
   51   3   3   0 43.248  86.496   0.383    2.94    6      260.2      681.5
   52   3   0   5 43.806  87.613   0.387    2.9    12       76.0      114.7
   53   4   1   3 43.928  87.855   0.388    2.89   24       39.8       62.7
   54   1   0   6 43.972  87.945   0.388    2.89   12        4.0        0.3
   55   4   0   4 44.124  88.248   0.389    2.88   12       11.2        2.5
   56   5   0   2 44.215  88.43    0.39     2.87   12      165.7      540.3
   57   4   2   0 44.245  88.49    0.39     2.87   12       45.2       40.3
   58   4   2   1 44.985  89.969   0.395    2.83   24        6.8        1.8


  X-ray diffraction powder data (I)...X-Ray wave length =  1.78892 (angs.):

  No   H   K   L   Theta 2*Theta    d           I int   I int.n.  I p.h.n.   H(Si)
                    ( degree )   (angstrem)     *100                         *100

    1   1   0   0   7.577  15.154  6.78349      710.5     23.7     24.5     5.6
    2   1   0   1  10.024  20.047  5.13901       61.0      2.0      2.1     5.6
    3   1   1   0  13.202  26.404  3.91645       67.6      2.3      2.3     5.6
    4   1   0   2  15.231  30.462  3.40471       97.6      3.3      3.3     5.6
    5   2   0   0  15.291  30.581  3.39175       78.1      2.6      2.7     5.6
    6   2   0   1  16.687  33.375  3.11497     2595.6     86.8     88.2     5.7
    7   2   0   2  20.372  40.743  2.5695        66.4      2.2      2.2     5.7
    8   2   1   0  20.418  40.836  2.56392      413.5     13.8     13.9     5.7
    9   1   0   3  21.436  42.871  2.44753      957.1     32.0     32.2     5.7
   10   2   1   1  21.524  43.049  2.4379      1790.7     59.9     60.3     5.7
   11   3   0   0  23.302  46.604  2.26116      956.8     32.0     32.1     5.7
   12   3   0   1  24.303  48.607  2.1733        68.5      2.3      2.3     5.7
   13   2   1   2  24.604  49.207  2.1484      2991.7    100.0    100.0     5.7
   14   2   0   3  25.528  51.056  2.07556       97.1      3.2      3.2     5.8
   15   0   0   4  27.03   54.059  1.96823      522.5     17.5     17.4     5.8
   16   3   0   2  27.142  54.283  1.96071      201.0      6.7      6.7     5.8
   17   2   2   0  27.179  54.358  1.95823      583.4     19.5     19.4     5.8
   18   1   0   4  28.242  56.484  1.89027      116.6      3.9      3.9     5.8
   19   2   1   3  29.191  58.382  1.83394      809.4     27.1     26.7     5.8
   20   3   1   1  29.262  58.525  1.82988      440.4     14.7     14.5     5.8
   21   2   2   2  30.675  61.35   1.75327      266.4      8.9      8.8     5.8
   22   3   0   3  31.477  62.954  1.713        651.7     21.8     21.4     5.9
   23   2   0   4  31.697  63.394  1.70236      268.3      9.0      8.8     5.9
   24   3   1   2  31.798  63.597  1.69749       41.8      1.4      1.4     5.9
   25   4   0   1  32.652  65.303  1.65785       75.9      2.5      2.5     5.9
   26   2   1   4  34.954  69.907  1.56124       73.0      2.4      2.4     5.9
   27   4   0   2  35.05   70.101  1.55749      241.3      8.1      7.8     5.9
   28   1   0   5  35.673  71.347  1.5338        52.5      1.8      1.7     5.9
   29   3   1   3  35.801  71.603  1.52906      122.4      4.1      4.0     5.9
   30   3   0   4  37.049  74.098  1.48458       95.9      3.2      3.1     6.0
   31   4   1   1  37.94   75.88   1.45479       48.7      1.6      1.6     6.0
   32   3   2   2  38.173  76.347  1.44725      130.6      4.4      4.2     6.0
   33   2   0   5  38.777  77.554  1.42818      474.8     15.9     15.2     6.0
   34   4   0   3  38.901  77.802  1.42435      284.9      9.5      9.1     6.0
   35   2   2   4  40.116  80.231  1.3882        81.0      2.7      2.6     6.0
   36   3   1   4  41.124  82.247  1.36001       49.2      1.6      1.6     6.1
   37   5   0   0  41.246  82.492  1.3567        94.1      3.1      3.0     6.1
   38   2   1   5  41.808  83.616  1.34175      222.2      7.4      7.0     6.1
   39   3   2   3  41.93   83.859  1.33857      655.7     21.9     20.6     6.1
   40   5   0   1  41.991  83.981  1.33699      181.3      6.1      5.7     6.1
   41   0   0   6  42.975  85.949  1.31215      149.3      5.0      4.7     6.1
   42   3   3   0  43.248  86.496  1.30548      681.5     22.8     21.3     6.1
   43   3   0   5  43.806  87.613  1.29215      114.7      3.8      3.6     6.2
   44   4   1   3  43.928  87.855  1.28931       62.7      2.1      2.0     6.2
   45   5   0   2  44.215  88.43   1.28266      580.6     19.4     18.1     6.2

Reference:
Chichagov A.V. et al.
Information-Calculating System on Crystal Structure Data of Minerals
(MINCRYST)
- Kristallographiya, v.35, n.3, 1990, p.610-616 (in Russian)