K Mg O9 P3
      Masse R, Grenier J, Averbuch-Pouchot M, Tranqui D, Durif A
      Bulletin de la Societe Francaise de Mineralogie et de Cristallographie 90 (1967) 158-161
      Etude cristallographique de trimetaphosphates hexagonaux du type M(II)
      N H4 (P O3)3 (M(II)= Zn, Co, Ca, Cd, Mg, Mn). Etude d'un cycle P3 O9
      dans un sel de potassium isomorphe. Mg K (P O3)3
      _cod_database_code 1007257
      _database_code_amcsd 0015938

      CELL PARAMETERS:    6.6050   6.6050   9.7720   90.000   90.000  120.000
      SPACE GROUP: P-6c2     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    369.198
      Density (g/cm3):      2.701
      MAX. ABS. INTENSITY / VOLUME**2:      16.61157329    
      RIR:      2.002
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.49         10.27        5.7201    1   0   0         3
                18.16         30.99        4.8860    0   0   2         2
                23.95        100.00        3.7152    1   0   2         6
                27.00          1.03        3.3025    1   1   0         6
                28.53         55.56        3.1287    1   1   1        12
                31.27         31.55        2.8600    2   0   0         3
                32.73         63.27        2.7361    1   1   2        12
                36.40          1.63        2.4683    2   0   2         6
                36.79          7.61        2.4430    0   0   4         2
                40.14          5.26        2.2467    1   0   4         6
                41.78          9.84        2.1620    2   1   0         6
                42.84         18.62        2.1109    2   1   1        12
                45.90          1.35        1.9771    2   1   2        12
                46.22          6.11        1.9640    1   1   4        12
                47.70         10.71        1.9067    3   0   0         3
                49.04         12.23        1.8576    2   0   4         6
                50.68          4.85        1.8013    2   1   3        12
                51.45          3.76        1.7762    3   0   2         6
                56.87         13.99        1.6190    2   1   4        12
                58.15          1.14        1.5865    3   1   0         6
                58.96          5.13        1.5664    1   0   6         6
                58.98         11.33        1.5660    3   1   1        12
                59.05          3.23        1.5643    2   2   2        12
                61.45          7.04        1.5089    3   1   2        12
                61.71          1.08        1.5031    3   0   4         6
                63.71          6.40        1.4607    1   1   6        12
                64.25          2.28        1.4498    2   1   5        12
                65.44          5.10        1.4263    3   1   3        12
                68.35          4.80        1.3724    4   0   2         6
                68.60          3.41        1.3681    2   2   4        12
                71.95          1.65        1.3123    3   2   0         6
                73.67          2.21        1.2858    1   1   7        12
                76.28          3.54        1.2482    4   1   0         6
                77.02          2.93        1.2382    4   1   1        12
                77.31          3.75        1.2341    4   0   4         6
                77.49          2.96        1.2317    3   1   5        12
                78.27          3.62        1.2215    0   0   8         2
                78.60          5.59        1.2172    3   2   3        12
                82.20          1.68        1.1728    2   1   7        12
                82.81          3.33        1.1656    4   1   3        12
                85.43          2.31        1.1364    3   1   6        12
                86.67          2.00        1.1233    2   0   8         6
                87.82          2.40        1.1115    4   1   4        12
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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.