Biphosphammite
      Khan A A, Baur W H
      Acta Crystallographica B29 (1973) 2721-2726
      Refinement of the crystal structures of ammonium dihydrogen phosphate and
      ammonium dihydrogen arsenate
      Locality: synthetic
      Note: known as ADP
      _database_code_amcsd 0009493

      CELL PARAMETERS:    7.4997   7.4997   7.5494   90.000   90.000   90.000
      SPACE GROUP: I-42d     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    424.620
      Density (g/cm3):      1.799
      MAX. ABS. INTENSITY / VOLUME**2:      16.49581260    
      RIR:      2.986
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                16.66        100.00        5.3206    1   0   1         8
                23.73         42.96        3.7499    2   0   0         4
                29.04         56.30        3.0752    1   1   2         4
                29.13         15.47        3.0651    2   1   1         8
                33.69          6.12        2.6603    2   0   2         8
                33.80          7.23        2.6515    2   2   0         4
                37.94          2.22        2.3716    3   1   0         8
                45.04          7.25        2.0129    2   1   3         8
                45.15         18.38        2.0081    3   1   2         8
                45.22          1.48        2.0053    3   2   1         8
                51.69          2.06        1.7683    4   1   1         8
                54.42          2.50        1.6859    2   0   4         8
                54.74          2.11        1.6770    4   2   0         8
                57.48          1.04        1.6033    3   2   3         8
                57.58          3.17        1.6009    3   3   2         4
                60.18          3.08        1.5376    2   2   4         4
                63.06          2.63        1.4742    4   1   3         8
                68.46          2.41        1.3705    5   1   2         8
                68.51          1.47        1.3696    5   2   1         8
                70.84          3.69        1.3301    4   0   4         8
                71.11          1.25        1.3258    4   4   0         4
                75.90          2.37        1.2536    4   2   4         8
                78.58          2.02        1.2175    5   3   2         8
                81.10          1.24        1.1858    6   2   0         8
                83.15          1.16        1.1618    4   1   5         8
                83.53          1.15        1.1574    5   4   1         8
                87.83          1.68        1.1115    3   1   6         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.