Clinocervantite
Diffraction data computed using the structure from the paper listed below, 
along with the cell parameters refined from single crystal data of R070385
      Basso R, Lucchetti G, Zefiro L, Palenzona A
      European Journal of Mineralogy 11 (1999) 95-100
      Clinocervantite, B-Sb2O4, the natural monoclinic polymorph
      of cervantite from the Cetine mine, Siena, Italy
      Note: z-coordinate to O2 altered by communications with R Basso, April, 2003
      Locality: Cetine mine, Siena, Italy

      CELL PARAMETERS:  12.0600  4.8280  5.3820   90.000  104.600   90.000
      SPACE GROUP: C2/c      

           ATOM        X         Y         Z     OCCUPANCY  ISO(B)
            Sb     0.25000   0.25000   0.00000     1.000     0.260
            Sb     0.00000   0.28510   0.25000     1.000     0.530
            O      0.19180   0.05170   0.67460     1.000     0.550
            O      0.09390   0.41220   0.96490     1.000     0.510

            X-RAY WAVELENGTH:     1.541838
            BOUNDS ON TWO THETA:    0.0  90.0
            LIMITS IMPOSED ON THE INDICES ARE:  +/- 10 +/-  4 +/-  4
            MAX. ABS. INTENSITY / VOLUME**2:      163.3368626    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                19.90          6.38        4.4613    1   1   0
                27.55        100.00        3.2376    1   1   1
                29.49          3.69        3.0292    3   1   0
                30.64         32.79        2.9176    4   0   0
                31.11         67.51        2.8752   -3   1   1
                33.98         22.49        2.6384   -2   0   2
                37.25         14.07        2.4140    0   2   0
                41.03          1.29        2.1997   -3   1   2
                41.22          2.25        2.1902    0   2   1
                41.38         14.21        2.1821    2   0   2
                45.77          1.90        1.9825    2   2   1
                48.97         19.50        1.8599    4   2   0
                50.38         17.99        1.8113    5   1   1
                51.03          9.66        1.7896   -6   0   2
                51.30         19.02        1.7810   -2   2   2
                54.87         16.42        1.6733   -1   1   3
                55.03          1.04        1.6687    4   2   1
                56.87         14.57        1.6191   -7   1   1
                56.88         12.13        1.6188    2   2   2
                57.84          1.33        1.5942    1   3   0
                61.03          9.05        1.5182   -5   1   3
                61.40          8.41        1.5099    1   3   1
                63.37          7.90        1.4678   -3   3   1
                63.80          3.51        1.4588    8   0   0
                64.86          7.43        1.4376   -6   2   2
                66.91          5.43        1.3985    6   0   2
                67.21          6.78        1.3929    3   1   3
                71.52          2.98        1.3192   -4   0   4
                72.61          3.08        1.3021    0   0   4
                76.26          5.27        1.2485    8   2   0
                76.72          4.13        1.2423    5   3   1
                79.15          3.14        1.2101    6   2   2
                79.39          1.39        1.2070    0   4   0
                80.36          2.37        1.1949   -1   3   3
                81.42          2.04        1.1820  -10   0   2
                82.03          2.26        1.1747   -7   3   1
                82.81          1.14        1.1656   -2   4   1
                83.46          3.49        1.1582   -9   1   3
                83.51          3.36        1.1576   -4   2   4
                83.71          3.57        1.1554    9   1   1
                84.55          3.41        1.1460    0   2   4
                85.62          3.43        1.1344   -5   3   3
                86.80          2.21        1.1220   -8   0   4
                87.45          2.60        1.1153    4   4   0
                89.23          2.12        1.0976   -2   4   2
                89.91          1.40        1.0911    4   0   4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.