Archerite
      Nelmes R J, Meyer G M, Tibballs J E
      Journal of Physics C: Solid State Physics 15 (1982) 59-75
      The crystal structure of tetragonal KH2PO4
      and KD2PO4 as a function of temperature
      Sample: T = 227 K
      _database_code_amcsd 0013166

      CELL PARAMETERS:    7.4590   7.4590   6.9570   90.000   90.000   90.000
      SPACE GROUP: I-42d     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    387.064
      Density (g/cm3):      2.335
      MAX. ABS. INTENSITY / VOLUME**2:      16.27497347    
      RIR:      2.270
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.43         18.09        5.0876    1   0   1         8
                23.86        100.00        3.7295    2   0   0         4
                29.70         11.43        3.0079    2   1   1         8
                30.79         95.50        2.9038    1   1   2         4
                33.99         22.67        2.6372    2   2   0         4
                35.28          7.68        2.5438    2   0   2         8
                38.15          3.37        2.3587    3   1   0         8
                38.45         12.52        2.3413    3   0   1         8
                40.75          4.98        2.2144    1   0   3         8
                45.76         11.75        1.9829    3   2   1         8
                46.52         51.16        1.9522    3   1   2         8
                47.77          3.52        1.9041    2   1   3         8
                48.84          1.83        1.8648    4   0   0         4
                52.25          1.42        1.7508    4   1   1         8
                54.08          1.38        1.6959    3   0   3         8
                55.06          9.22        1.6679    4   2   0         8
                58.56          8.04        1.5763    2   0   4         8
                58.85          9.88        1.5691    3   3   2         4
                59.92          2.68        1.5438    3   2   3         8
                63.61          1.04        1.4628    5   1   0         8
                64.14          8.50        1.4519    2   2   4         4
                69.74         10.12        1.3484    5   1   2         8
                71.56          3.66        1.3186    4   4   0         4
                74.62          8.52        1.2719    4   0   4         8
                76.65          1.58        1.2432    6   0   0         4
                79.64          7.83        1.2038    4   2   4         8
                79.90          6.85        1.2006    5   3   2         8
                81.64          4.67        1.1794    6   2   0         8
                82.38          1.17        1.1707    6   0   2         8
                85.80          2.89        1.1325    1   1   6         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.