Almeidaite
      Menezes L A D, Chukanov N V, Rastsvetaeva R K, Aksenov S M, Pekov I V,
      Chaves M L S C, Richards R P, Atencio D, Brandao P R G, Scholz R, Krambrock K,
      Moreira R L, Guimaraes F S, Romano A W, Persiano A C, de Oliveira L C A,
      Ardisson J D
      Mineralogical Magazine 79 (2015) 269-283
      Almeidaite, Pb(Mn,Y)Zn2(Ti,Fe3+)18O36(O,OH)2, a new crichtonite-group mineral,
      from Novo Horizonte, Bahia, Brazil
      Locality: Novo Horizonte, Bahia, Brazil
      _database_code_amcsd 0020699

      CELL PARAMETERS:   10.4359  10.4359  21.0471   90.000   90.000  120.000
      SPACE GROUP: R-3       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1985.101
      Density (g/cm3):      4.577
      MAX. ABS. INTENSITY / VOLUME**2:      17.93196432    
      RIR:      1.276
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                10.65          7.37        8.3045    1   0   1         6
                12.62          2.29        7.0157    0   0   3         2
                12.91          1.56        6.8563    0   1   2         6
                16.99          9.98        5.2179    1   1   0         6
                19.52          4.84        4.5473    1   0   4         6
                20.10          4.47        4.4182    0   2   1         6
                21.40         10.46        4.1522    2   0   2         6
                23.31         19.47        3.8158    0   1   5         6
                25.39          3.86        3.5078    0   0   6         2
                25.99         60.06        3.4282    0   2   4         6
                27.45         10.50        3.2491    1   2   2         6
                28.99         39.05        3.0801    2   0   5         6
                29.65         33.24        3.0126    3   0   0         6
                30.71         44.88        2.9112    1   1   6         6
                30.71         55.12        2.9112    2  -1   6         6
                31.22          8.64        2.8651    2   1   4         6
                31.22         49.72        2.8651    3  -1   4         6
                31.35         10.32        2.8530    1   0   7         6
                32.34         25.58        2.7682    0   3   3         6
                32.34         23.84        2.7682    3   0   3         6
                33.79         21.20        2.6525    1   2   5         6
                33.79         11.25        2.6525   -1   3   5         6
                34.37          9.85        2.6090    2   2   0         6
                36.09         37.73        2.4890   -1   4   1         6
                36.09          3.66        2.4890    1   3   1         6
                36.75         14.49        2.4454    4  -2   3         6
                36.75         13.99        2.4454    2   2   3         6
                36.86         19.48        2.4384    3   1   2         6
                38.50          1.96        2.3386    0   0   9         2
                39.84         14.54        2.2630    1   3   4         6
                39.84         30.66        2.2630   -1   4   4         6
                39.95          3.58        2.2570    2   1   7         6
                41.95         38.43        2.1537    3   1   5         6
                41.95          5.01        2.1537    4  -1   5         6
                42.35          2.11        2.1340    1   1   9         6
                42.35          3.17        2.1340    2  -1   9         6
                43.41          3.58        2.0844    1   2   8         6
                44.18          3.01        2.0499    1   0  10         6
                44.54          2.70        2.0343    2   3   2         6
                45.57          1.04        1.9908    0   4   5         6
                46.02          7.34        1.9722    1   4   0         6
                46.02          3.19        1.9722    4   1   0         6
                47.11          9.73        1.9290    5  -2   4         6
                47.21          8.00        1.9253   -1   4   7         6
                47.66          3.26        1.9079    0   2  10         6
                47.91          2.67        1.8986   -1   5   3         6
                47.91          3.54        1.8986    4   1   3         6
                48.97         10.48        1.8600    2   3   5         6
                50.28         46.91        1.8148    3   1   8         6
                50.53          1.46        1.8063    4   0   7         6
                50.69          1.42        1.8009    0   5   1         6
                50.96          6.77        1.7919    2   1  10         6
                52.15          3.60        1.7539    0   0  12         2
                53.29          1.09        1.7191   -1   5   6         6
                53.29         10.46        1.7191    5  -1   6         6
                53.29         11.64        1.7191    1   4   6         6
                53.29          2.74        1.7191    4   1   6         6
                53.61          3.24        1.7095    0   5   4         6
                53.70          1.28        1.7069    3   2   7         6
                53.85          1.45        1.7024    2   4   1         6
                55.25          1.02        1.6625    1   1  12         6
                55.25          1.34        1.6625    2  -1  12         6
                55.31          5.83        1.6609    5   0   5         6
                56.66          2.55        1.6245    2   4   4         6
                56.66          4.05        1.6245   -2   6   4         6
                57.15         52.27        1.6119   -1   4  10         6
                57.86          1.65        1.5936    1   0  13         6
                58.30          2.67        1.5827    4   2   5         6
                58.30          4.00        1.5827    6  -2   5         6
                59.30          3.59        1.5583    3   3   6         6
                59.30          4.91        1.5583    6  -3   6         6
                59.61          3.60        1.5511    5   1   4         6
                59.61          1.62        1.5511    6  -1   4         6
                60.08          1.73        1.5401    4   0  10         6
                60.91         17.91        1.5209    3   1  11         6
                61.20          2.07        1.5145    1   5   5         6
                61.57          1.93        1.5063    6   0   0         6
                62.54          1.45        1.4851    2   4   7         6
                62.92          1.08        1.4771    3   2  10         6
                63.20          2.32        1.4712   -3   7   2         6
                63.60          1.05        1.4630    3  -1  13         6
                63.60          3.85        1.4630    2   1  13         6
                64.38          3.81        1.4472    5   2   0         6
                64.38         52.55        1.4472    2   5   0         6
                65.25          5.12        1.4299    4   3   4         6
                65.33          1.30        1.4284    6  -1   7         6
                65.43          3.37        1.4265    2   0  14         6
                65.90          2.69        1.4174   -2   7   3         6
                65.90          2.79        1.4174    5   2   3         6
                66.77          3.57        1.4011   -3   7   5         6
                67.70          5.01        1.3841    6   0   6         6
                67.70          5.94        1.3841    0   6   6         6
                68.15          1.21        1.3760   -1   3  14         6
                68.15          2.75        1.3760    1   2  14         6
                69.06          4.64        1.3600   -1   4  13         6
                69.35          3.26        1.3550    2  -1  15         6
                71.08          1.92        1.3262    2   4  10         6
                71.72          1.17        1.3160    4   0  13         6
                72.06          1.16        1.3106    5  -1  12         6
                72.06          1.22        1.3106    1   4  12         6
                72.11          1.00        1.3098    6   1   5         6
                73.45          1.06        1.2893    3   1  14         6
                75.23          1.93        1.2630    0   2  16         6
                76.08          2.91        1.2511    6   2   1         6
                76.55          1.15        1.2445   -2   8   2         6
                77.30          1.46        1.2344    0   7   5         6
                77.81          3.33        1.2276    3  -1  16         6
                78.18          1.01        1.2227    8  -4   6         6
                78.18          1.47        1.2227    4   4   6         6
                78.44          1.70        1.2192    6   2   4         6
                78.60          1.96        1.2171    2   3  14         6
                78.86          1.09        1.2138    4   3  10         6
                79.85          2.08        1.2012   -2   8   5         6
                82.49          3.82        1.1693    0   0  18         2
                82.88          2.16        1.1648    1   3  16         6
                83.67          1.23        1.1558    5   0  14         6
                83.92          1.39        1.1530   -1   7  10         6
                84.80          1.29        1.1433    1   4  15         6
                85.76          1.30        1.1329    8  -1   6         6
                85.76          1.08        1.1329    1   7   6         6
                85.90          4.71        1.1315   -2   8   8         6
                87.36          1.29        1.1163    2   5  12         6
                87.36          1.23        1.1163    7  -2  12         6
                87.90          1.64        1.1108    5  -2  16         6
                88.53          1.45        1.1045    0   8   4         6
                89.81          1.03        1.0921    6  -3  15         6
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.