Ag2 H2 O7 P2
      Averbuch-Pouchot M, Durif A
      European Journal of Solid State and Inorganic Chemistry 29 (1992) 993-999
      Crystal structure of silver-dihydrogeno-diphospate: Ag2H2P2O7
      _cod_database_code 1007207
      _database_code_amcsd 0012558

      CELL PARAMETERS:   27.7790  12.3850   7.0260   90.000   90.000   90.000
      SPACE GROUP: Fddd      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   2417.246
      Density (g/cm3):      4.305
      MAX. ABS. INTENSITY / VOLUME**2:      37.65735810    
      RIR:      2.848
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                12.75          9.36        6.9447    4   0   0         2
                14.84         27.88        5.9684    1   1   1         8
                15.67          2.35        5.6558    2   2   0         4
                17.39         37.84        5.1005    3   1   1         8
                21.62          3.28        4.1109    5   1   1         8
                25.23          2.60        3.5305    1   3   1         8
                25.65         63.70        3.4724    8   0   0         2
                26.17         10.68        3.4058    2   0   2         4
                26.79          7.16        3.3282    7   1   1         8
                26.83         16.32        3.3224    3   3   1         8
                28.83         67.76        3.0963    0   4   0         2
                29.81         20.69        2.9971    5   3   1         8
                29.94        100.00        2.9842    2   2   2         8
                31.64          5.38        2.8279    4   4   0         4
                31.98          3.57        2.7986    6   0   2         4
                32.00          4.65        2.7968    4   2   2         8
                32.50         37.79        2.7551    9   1   1         8
                33.83         14.28        2.6497    7   3   1         8
                35.19         56.77        2.5502    6   2   2         8
                35.42          2.11        2.5346   10   2   0         4
                38.58          8.45        2.3339   11   1   1         8
                38.61          1.33        2.3319    9   3   1         8
                38.68         12.21        2.3279    1   5   1         8
                38.90         18.10        2.3149   12   0   0         2
                38.97         31.61        2.3110    8   4   0         4
                39.28          1.39        2.2939    8   2   2         8
                39.29         13.66        2.2934    1   1   3         8
                39.33          6.31        2.2910    2   4   2         8
                39.80         10.97        2.2651    3   5   1         8
                40.39         17.48        2.2333    3   1   3         8
                40.97          4.48        2.2029    4   4   2         8
                41.44          1.91        2.1790   10   0   2         4
                43.96          3.38        2.0596   11   3   1         8
                44.06          1.30        2.0554   10   2   2         8
                44.37          4.60        2.0417    2   6   0         4
                44.60          2.71        2.0316    1   3   3         8
                45.03          1.83        2.0132    7   5   1         8
                45.60          3.12        1.9895    3   3   3         8
                47.07          2.13        1.9307    8   4   2         8
                48.90         15.98        1.8627    9   5   1         8
                49.14         10.02        1.8540   12   4   0         4
                49.39          1.54        1.8452   12   2   2         8
                49.40         10.99        1.8449    9   1   3         8
                50.35          2.95        1.8122    7   3   3         8
                51.27          4.71        1.7819   10   4   2         8
                51.34          1.83        1.7797    0   6   2         4
                51.57          6.06        1.7723   15   1   1         8
                51.79          9.19        1.7653    2   6   2         8
                52.07          5.36        1.7565    0   0   4         2
                53.43          2.42        1.7149   11   5   1         8
                53.90         10.66        1.7009   11   1   3         8
                53.93          3.14        1.7002    9   3   3         8
                53.98          7.87        1.6986    1   5   3         8
                54.38          2.08        1.6870    3   7   1         8
                54.85          3.79        1.6737    3   5   3         8
                55.20         17.50        1.6641   14   2   2         8
                55.30         14.15        1.6612    6   6   2         8
                55.46          2.61        1.6568   10   6   0         4
                55.97          4.86        1.6429   15   3   1         8
                56.01          9.44        1.6419    4   2   4         8
                56.10          5.49        1.6393    5   7   1         8
                58.19          5.63        1.5855   11   3   3         8
                58.47          3.94        1.5786   17   1   1         8
                58.54          1.53        1.5767   13   5   1         8
                58.62          6.43        1.5748    7   7   1         8
                58.92          3.88        1.5674    8   0   4         4
                58.99          3.43        1.5659   13   1   3         8
                59.06          1.68        1.5640    7   5   3         8
                59.73          1.71        1.5481    0   8   0         2
                60.61          7.65        1.5278    0   4   4         4
                61.20          1.40        1.5144   16   4   0         4
                62.30          7.32        1.4903    9   5   3         8
                62.55          4.26        1.4850   17   3   1         8
                64.18          1.53        1.4512   15   5   1         8
                64.60          1.36        1.4428   15   1   3         8
                65.22          1.83        1.4305   14   6   0         4
                66.08          2.27        1.4140    8   8   0         4
                66.22          4.15        1.4112   11   5   3         8
                66.24          1.30        1.4109   12   6   2         8
                66.32          1.04        1.4094    2   8   2         8
                66.86          1.54        1.3993   12   0   4         4
                66.91          5.08        1.3984    8   4   4         8
                67.33          3.41        1.3907   16   4   2         8
                67.43          2.03        1.3889   20   0   0         2
                67.47          2.31        1.3881    4   8   2         8
                68.47          1.53        1.3703   15   3   3         8
                68.78          2.70        1.3649   12   2   4         8
                69.71          3.24        1.3489    1   9   1         8
                70.30          2.36        1.3390   17   5   1         8
                70.71          1.97        1.3323   17   1   3         8
                70.75          1.28        1.3316    2   6   4         8
                70.78          1.11        1.3312   13   5   3         8
                70.85          1.55        1.3301    7   7   3         8
                71.17          4.19        1.3249   14   6   2         8
                71.67          1.83        1.3167    3   3   5         8
                71.87          2.60        1.3136    4   6   4         8
                71.99          1.99        1.3117    8   8   2         8
                73.15          3.00        1.2937    5   3   5         8
                74.40          1.66        1.2751   12   4   4         8
                74.94          1.51        1.2673   20   4   0         4
                75.36          1.89        1.2613    7   3   5         8
                75.54          2.72        1.2586   15   7   1         8
                77.09          2.75        1.2372    9   9   1         8
                77.18          1.26        1.2360   18   6   0         4
                77.32          1.28        1.2340   19   1   3         8
                77.35          1.50        1.2336    2  10   0         4
                79.53          1.89        1.2053   10   6   4         8
                81.14          2.45        1.1854    1   9   3         8
                81.18          2.46        1.1849   23   1   1         8
                81.31          1.06        1.1833   17   7   1         8
                82.70          2.32        1.1669    2   0   6         4
                83.18          1.04        1.1614    0   8   4         4
                84.09          1.22        1.1511   21   5   1         8
                84.48          2.64        1.1468   21   1   3         8
                84.49          1.49        1.1467    2   2   6         8
                84.76          2.24        1.1437   23   3   1         8
                85.40          1.98        1.1367    7   9   3         8
                85.80          1.70        1.1326    6  10   2         8
                85.93          2.51        1.1312   10  10   0         4
                86.10          1.33        1.1293   13   3   5         8
                87.32          2.25        1.1166    6   2   6         8
                88.04          1.36        1.1094   21   3   3         8
                88.08          1.97        1.1090   19   5   3         8
                88.23          1.72        1.1075    9   9   3         8
                88.84          1.71        1.1014    8   8   4         8
                89.23          3.92        1.0976   16   8   2         8
                89.69          1.28        1.0932   25   1   1         8
                89.74          1.90        1.0927    3   7   5         8
                89.83          2.82        1.0919    2   4   6         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.