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 = 295 K
      _database_code_amcsd 0013165

      CELL PARAMETERS:    7.4521   7.4521   6.9740   90.000   90.000   90.000
      SPACE GROUP: I-42d     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    387.293
      Density (g/cm3):      2.334
      MAX. ABS. INTENSITY / VOLUME**2:      16.00411645    
      RIR:      2.233
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.42         19.11        5.0920    1   0   1         8
                23.88        100.00        3.7260    2   0   0         4
                29.71         11.82        3.0070    2   1   1         8
                30.75         96.87        2.9080    1   1   2         4
                34.03         23.18        2.6347    2   2   0         4
                35.25          7.06        2.5460    2   0   2         8
                38.19          3.15        2.3566    3   1   0         8
                38.47         12.07        2.3400    3   0   1         8
                40.66          4.86        2.2192    1   0   3         8
                45.79         11.21        1.9816    3   2   1         8
                46.51         50.49        1.9525    3   1   2         8
                47.70          3.45        1.9066    2   1   3         8
                48.89          1.63        1.8630    4   0   0         4
                52.29          1.41        1.7496    4   1   1         8
                54.03          1.39        1.6973    3   0   3         8
                55.12          9.09        1.6663    4   2   0         8
                58.44          7.91        1.5792    2   0   4         8
                58.87          9.65        1.5687    3   3   2         4
                59.88          2.62        1.5446    3   2   3         8
                64.04          8.10        1.4540    2   2   4         4
                69.77          9.67        1.3479    5   1   2         8
                71.63          3.63        1.3174    4   4   0         4
                74.54          8.32        1.2730    4   0   4         8
                76.73          1.46        1.2420    6   0   0         4
                79.58          7.34        1.2046    4   2   4         8
                79.95          6.46        1.2000    5   3   2         8
                81.73          4.28        1.1783    6   2   0         8
                82.43          1.06        1.1700    6   0   2         8
                85.56          2.70        1.1350    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.