Marshite
      Hull S, Keen D A
      Physical Review B50 (1994) 5868-5885
      High-pressure polymorphism of the copper(I) halides:
      A neutron-diffraction study to ~10 GPa
      Note: P = 3.60 GPa
      Note: known as CuI-IV
      _database_code_amcsd 0015182

      CELL PARAMETERS:    4.0826   4.0826  20.0770   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    289.803
      Density (g/cm3):      6.547
      MAX. ABS. INTENSITY / VOLUME**2:      165.8146326    
      RIR:      8.247
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.23         32.38        6.6923    0   0   3         2
                25.58         16.84        3.4821    1   0   1         6
                26.64         39.95        3.3462    0   0   6         2
                26.73        100.00        3.3348    0   1   2         6
                30.94         14.62        2.8905    1   0   4         6
                33.78          6.35        2.6536    0   1   5         6
                40.50          5.67        2.2274    1   0   7         6
                44.26         54.10        2.0465    0   1   8         6
                44.38         54.10        2.0413    1   1   0         6
                46.51          6.12        1.9525    1   1   3        12
                51.92          1.73        1.7610    0   2   1         6
                52.41         10.63        1.7459    1   0  10         6
                52.51         29.54        1.7426    1   1   6        12
                52.56         12.52        1.7410    2   0   2         6
                55.08          2.70        1.6674    0   2   4         6
                56.76          1.81        1.6218    0   1  11         6
                56.91          1.00        1.6180    2   0   5         6
                61.58          1.16        1.5060    1   1   9        12
                61.63          1.15        1.5049    0   2   7         6
                64.47         13.74        1.4452    2   0   8         6
                70.92          5.67        1.3289    0   1  14         6
                71.05          3.62        1.3268    0   2  10         6
                71.18          8.43        1.3247    1   2   2        12
                73.14          2.39        1.2940    1   1  12        12
                73.31          2.27        1.2914    2   1   4        12
                81.37          5.57        1.1825    1   0  16         6
                81.62         11.28        1.1795    1   2   8        12
                81.71          5.66        1.1785    3   0   0         6
                87.61          2.74        1.1137    2   0  14         6
                87.74          3.63        1.1124    2   1  10        12
                87.82          2.40        1.1116    3   0   6         6
                87.82          2.40        1.1116    0   3   6         6
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.