Tangdanite
      Ma Z, Li G, Chukanov N V, Poirier G, Shi N
      Mineralogical Magazine 78 (2014) 559-569
      Tangdanite, a new mineral species from the Yunnan Province, China
      and the discreditation of 'clinotyrolite'
      Locality: Nanniping mine, Dongchuan district, Yunnan Province, China
      _database_code_amcsd 0020184

      CELL PARAMETERS:   54.4900   5.5685  10.4690   90.000   96.294   90.000
      SPACE GROUP: C2/c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   3157.436
      Density (g/cm3):      3.363
      MAX. ABS. INTENSITY / VOLUME**2:      124.2686358    
      RIR:     12.033
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 3.26        100.00       27.0808    2   0   0         2
                 6.53         25.56       13.5404    4   0   0         2
                16.00          1.15        5.5393    1   1   0         4
                17.04          1.70        5.2029    0   0   2         2
                18.48          4.00        4.8010   -3   1   1         4
                18.73          1.80        4.7381   -6   0   2         2
                20.24          3.49        4.3873    5   1   1         4
                20.35          1.12        4.3630   -8   0   2         2
                20.62          2.71        4.3081    6   0   2         2
                20.92          3.27        4.2461   -7   1   1         4
                22.67          2.34        3.9229    8   0   2         2
                22.78          1.90        3.9045   -9   1   1         4
                25.44          2.75        3.5006    5   1   2         4
                26.71          2.05        3.3371   -9   1   2         4
                26.72          1.01        3.3359   13   1   0         4
                28.76          1.42        3.1038    9   1   2         4
                29.87          1.49        2.9913  -16   0   2         2
                30.25          2.25        2.9548   -1   1   3         4
                30.30          1.30        2.9497   -3   1   3         4
                31.51          2.83        2.8396   15   1   1         4
                32.81          1.18        2.7296  -15   1   2         4
                33.56          2.94        2.6703    7   1   3         4
                33.58          3.12        2.6690    2   2   1         4
                33.99          2.85        2.6373  -11   1   3         4
                34.84          1.41        2.5750    8   2   0         4
                36.50          1.53        2.4619   22   0   0         2
                36.87          1.02        2.4377   -4   2   2         4
                37.00          1.39        2.4293   11   1   3         4
                37.98          1.16        2.3691  -12   0   4         2
                50.10          1.02        1.8206   25   1   2         4
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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.