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 = 263 K
      _database_code_amcsd 0013167

      CELL PARAMETERS:    7.4794   7.4794   6.9950   90.000   90.000   90.000
      SPACE GROUP: I-42d     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    391.310
      Density (g/cm3):      2.310
      MAX. ABS. INTENSITY / VOLUME**2:      15.91007092    
      RIR:      2.243
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.36         19.09        5.1089    1   0   1         8
                23.79        100.00        3.7397    2   0   0         4
                29.60         11.27        3.0176    2   1   1         8
                30.65         94.54        2.9173    1   1   2         4
                33.90         22.36        2.6444    2   2   0         4
                35.13          7.18        2.5544    2   0   2         8
                38.05          3.09        2.3652    3   1   0         8
                38.33         11.68        2.3484    3   0   1         8
                40.53          4.61        2.2260    1   0   3         8
                45.61         10.90        1.9888    3   2   1         8
                46.34         48.24        1.9592    3   1   2         8
                47.54          3.33        1.9128    2   1   3         8
                48.70          1.65        1.8699    4   0   0         4
                52.08          1.24        1.7559    4   1   1         8
                53.83          1.33        1.7030    3   0   3         8
                54.90          8.41        1.6724    4   2   0         8
                58.24          7.31        1.5841    2   0   4         8
                58.64          9.06        1.5742    3   3   2         4
                59.66          2.50        1.5498    3   2   3         8
                63.81          7.57        1.4586    2   2   4         4
                69.49          8.86        1.3527    5   1   2         8
                71.33          3.22        1.3222    4   4   0         4
                74.26          7.44        1.2772    4   0   4         8
                76.40          1.32        1.2466    6   0   0         4
                79.26          6.69        1.2087    4   2   4         8
                79.61          5.80        1.2043    5   3   2         8
                81.37          3.85        1.1826    6   2   0         8
                85.24          2.36        1.1385    1   1   6         4
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.