Tuite
      Sugiyama K, Tokonami M
      Physics and Chemistry of Minerals 15 (1987) 125-130
      Structure and crystal chemistry of a dense polymorph of
      tricalcium phosphate Ca3(PO4)2: a host to accommodate
      large lithophile elements in the Earth's mantle
      _database_code_amcsd 0007447

      CELL PARAMETERS:    5.2487   5.2487  18.6735   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    445.512
      Density (g/cm3):      3.468
      MAX. ABS. INTENSITY / VOLUME**2:      21.80220535    
      RIR:      2.047
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                20.11          1.89        4.4165    1   0   1         6
                28.68          4.40        3.1123    0   0   6         2
                30.99         86.24        2.8856    0   1   5         6
                34.17        100.00        2.6244    1   1   0         6
                37.18          4.39        2.4182    1   1   3        12
                40.87         22.48        2.2083    2   0   2         6
                43.59          5.61        2.0764    0   1   8         6
                43.62          9.28        2.0748    0   0   9         2
                44.33         14.10        2.0435    0   2   4         6
                45.19          6.68        2.0063    1   1   6        12
                46.79         44.08        1.9415    2   0   5         6
                52.93          2.41        1.7300    0   2   7         6
                53.02         25.14        1.7273    1   0  10         6
                56.54          2.14        1.6276    1   1   9        12
                59.20         18.00        1.5608    1   2   5        12
                61.17         13.49        1.5152    3   0   0         6
                64.60          6.37        1.4428    0   2  10         6
                67.72          1.13        1.3837    1   2   8        12
                69.06          3.13        1.3601    2   0  11         6
                71.96         17.93        1.3122    2   2   0         6
                75.14         15.78        1.2643    2   1  10        12
                80.39          7.85        1.1945    3   1   5        12
                86.53         10.79        1.1248    1   1  15        12
                88.08          2.77        1.1090    2   2   9        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.