Mg2SiO4
      Finkelstein G J, Dera P K, Jahn S, Oganov A R, Holl C M, Meng Y, Duffy T S
      American Mineralogist 99 (2014) 35-43
      Phase transitions and equation of state of forsterite to 90 GPa from single-crystal
      X-ray diffraction and molecular modeling
      Note: P = 52.4 GPa
      Locality: Synthetic
      _database_code_amcsd 0020328

      CELL PARAMETERS:    4.6950   9.2010   5.3110   93.100  107.264   98.133
      SPACE GROUP: P1        
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    215.766
      Density (g/cm3):      4.330
      MAX. ABS. INTENSITY / VOLUME**2:      5.779365423    
      RIR:      0.435
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 9.76         36.30        9.0613    0   1   0         1
                17.58          4.34        5.0455    0   0   1         1
                19.59          4.07        4.5307    0   2   0         1
                20.08          6.05        4.4219    1   0   0         1
                20.85         26.88        4.2611   -1   1   0         1
                21.01         33.47        4.2293    0   1   1         1
                22.28          5.89        3.9899   -1   0   1         1
                23.80          2.68        3.7380    1   1   0         1
                25.05          8.32        3.5554    0  -2   1         1
                25.72         11.19        3.4634   -1   2   0         1
                27.77          3.15        3.2126    0   2   1         1
                28.78          6.84        3.1019   -1   2   1         1
                30.49          3.34        2.9317    1   2   0         1
                30.65          3.98        2.9170    1  -1   1         1
                30.72          7.01        2.9107    1   0   1         1
                30.86         13.48        2.8972   -1  -2   1         1
                33.04         39.51        2.7114   -1   3   0         1
                33.70         11.70        2.6597    1  -2   1         1
                33.89          4.35        2.6453    1   1   1         1
                35.11          4.68        2.5561   -1   0   2         1
                35.59          3.99        2.5227    0   0   2         1
                35.97          3.15        2.4967    0  -1   2         1
                36.04         24.72        2.4920   -1   3   1         1
                36.18          7.52        2.4828    0   3   1         1
                36.45         19.12        2.4649   -1  -1   2         1
                36.60          3.14        2.4553   -1   1   2         1
                37.98         47.01        2.3689    0   1   2         1
                38.60         20.33        2.3323   -1  -3   1         1
                38.78         69.35        2.3219    1   3   0         1
                39.06          2.16        2.3059    0  -2   2         1
                39.12         11.60        2.3024   -2   0   1         1
                39.14         24.66        2.3016   -2   1   1         1
                39.23         23.54        2.2967    1  -3   1         1
                39.50          3.83        2.2814    1   2   1         1
                39.79          7.30        2.2653    0   4   0         1
                40.36          2.16        2.2346   -2   1   0         1
                40.39          4.61        2.2334   -1  -2   2         1
                40.66          4.03        2.2191   -1   2   2         1
                41.71          5.99        2.1654   -2   2   1         1
                42.03          1.99        2.1498    0  -4   1         1
                42.43          1.45        2.1305   -2   2   0         1
                42.76          1.96        2.1146    0   2   2         1
                43.72          4.90        2.0706    2   1   0         1
                44.62          3.42        2.0308   -1   4   1         1
                45.47          1.97        1.9949   -2   0   2         1
                45.53          3.85        1.9923    0   4   1         1
                45.90         45.28        1.9770   -2   1   2         1
                46.16          1.32        1.9667    1  -1   2         1
                46.36          1.53        1.9584   -1  -3   2         1
                46.43          1.56        1.9557   -2  -2   1         1
                46.50          1.33        1.9532    1  -4   1         1
                46.73          2.42        1.9440   -1   3   2         1
                46.83         17.14        1.9399    1   3   1         1
                47.33          1.63        1.9208   -2  -1   2         1
                47.50          2.96        1.9143   -1  -4   1         1
                47.96        100.00        1.8968    1  -2   2         1
                48.06         73.10        1.8932    1   4   0         1
                48.59         77.27        1.8739   -2   2   2         1
                49.09          6.76        1.8560    2  -1   1         1
                49.87          4.08        1.8286    2   0   1         1
                50.35          2.67        1.8123    0   5   0         1
                50.48          1.88        1.8080    2  -2   1         1
                51.40          3.36        1.7777    0  -4   2         1
                51.84         14.13        1.7635    0  -5   1         1
                51.86         17.61        1.7631    1  -3   2         1
                51.87          1.54        1.7627   -1   0   3         1
                53.26          1.32        1.7198   -2   3   2         1
                53.88          2.21        1.7017   -1  -4   2         1
                55.14          1.52        1.6657   -1  -2   3         1
                55.41          5.81        1.6582    1   4   1         1
                57.36          1.24        1.6063    0   4   2         1
                57.53          1.42        1.6020    2   2   1         1
                58.11          2.24        1.5874    1   5   0         1
                58.48          6.22        1.5782   -2   1   3         1
                59.05          1.02        1.5643   -3   1   1         1
                59.17          2.38        1.5614    2  -4   1         1
                59.65          2.27        1.5501   -1  -3   3         1
                60.20          2.30        1.5373    0  -3   3         1
                60.30          1.37        1.5348    1   3   2         1
                60.47          3.77        1.5311   -2   5   0         1
                61.11          3.28        1.5164   -2   2   3         1
                62.03          4.02        1.4961   -1   3   3         1
                62.09          1.47        1.4949   -2  -2   3         1
                62.11          1.10        1.4945   -3   1   0         1
                62.14          1.38        1.4939   -3   1   2         1
                62.36          3.55        1.4890    0  -6   1         1
                63.11         13.47        1.4732   -1   5   2         1
                63.46          1.68        1.4658    2   4   0         1
                63.47          3.68        1.4657   -3   3   1         1
                63.72          2.38        1.4605   -3   2   2         1
                63.82          4.39        1.4585    2  -2   2         1
                63.92          1.59        1.4563    2   3   1         1
                64.42          1.31        1.4462    1  -1   3         1
                64.45          1.79        1.4457   -1   6   1         1
                64.59          1.43        1.4429    1  -6   1         1
                65.02          1.41        1.4345    1   5   1         1
                65.13          1.83        1.4322    1   0   3         1
                65.51          2.08        1.4248   -2   3   3         1
                65.55          3.81        1.4241    1  -2   3         1
                65.86          1.75        1.4182    3   1   0         1
                66.39          5.06        1.4080    0   6   1         1
                66.52          2.66        1.4057    0   5   2         1
                66.79         12.05        1.4007    2   1   2         1
                67.38          1.97        1.3898   -2   5   2         1
                68.06          3.30        1.3776    1   4   2         1
                68.32          1.17        1.3730   -3   4   1         1
                68.44         40.47        1.3708   -3  -2   2         1
                68.46          1.43        1.3705    1  -3   3         1
                68.80          4.34        1.3645   -1   4   3         1
                69.18         27.87        1.3580    0  -6   2         1
                69.98          2.60        1.3443   -2  -5   1         1
                70.19         33.01        1.3409   -3   4   0         1
                70.91          1.23        1.3290   -3   1   3         1
                71.13         18.82        1.3254   -1   0   4         1
                71.30         20.83        1.3227    2   2   2         1
                71.32         13.73        1.3224   -1  -1   4         1
                71.74          1.27        1.3157    2   4   1         1
                72.54          1.27        1.3031   -3  -1   3         1
                72.72          3.89        1.3004    0  -5   3         1
                72.89          5.07        1.2978   -2  -5   2         1
                73.00         13.00        1.2960   -1   6   2         1
                73.10          6.64        1.2945    0   7   0         1
                73.33          1.17        1.2910   -2  -4   3         1
                73.40          1.33        1.2900   -1  -5   3         1
                73.65          2.78        1.2862    3  -3   1         1
                75.66          3.22        1.2569   -1   7   1         1
                75.95          1.01        1.2529   -1   2   4         1
                76.44          7.92        1.2460    3   3   0         1
                76.84          1.11        1.2406    2  -5   2         1
                76.87          1.29        1.2401   -1  -3   4         1
                77.11          3.56        1.2369    1   5   2         1
                77.80          2.16        1.2276   -2   2   4         1
                78.74          5.06        1.2153   -3   5   2         1
                79.23          1.04        1.2091    1  -5   3         1
                79.28          1.64        1.2084    0  -3   4         1
                79.36          8.33        1.2074   -2   7   0         1
                79.76          1.06        1.2024    0  -7   2         1
                80.29          1.01        1.1958   -2  -6   1         1
                80.41          1.74        1.1943   -2   7   1         1
                81.21          2.44        1.1845   -2  -5   3         1
                81.97          1.14        1.1754    2   0   3         1
                82.10          1.58        1.1739   -2   3   4         1
                82.12          1.20        1.1737   -1  -4   4         1
                82.38          2.58        1.1706   -1  -6   3         1
                82.45          2.21        1.1698   -4   1   1         1
                83.15          1.08        1.1617    3  -5   1         1
                83.72          1.06        1.1552    2  -7   1         1
                84.08          1.16        1.1512   -4   0   2         1
                84.34          3.19        1.1484    2  -6   2         1
                84.56          1.14        1.1459    3  -1   2         1
                85.59          2.06        1.1347   -3  -1   4         1
                86.56          2.23        1.1245   -1   6   3         1
                86.60          9.71        1.1240    0   3   4         1
                86.63          2.36        1.1238    3  -3   2         1
                87.01          2.51        1.1198   -4   1   0         1
                87.32          8.22        1.1167   -2  -4   4         1
                88.00          1.31        1.1098   -1   8   1         1
                88.43          8.06        1.1055    4   0   0         1
                89.15          1.47        1.0984    3   1   2         1
                89.38          1.34        1.0962    2   2   3         1
                89.44          1.59        1.0956   -4   1   3         1
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.