Triphylite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R050257
      Losey A, Rakovan J F, Hughes J M, Francis C A, Dyar M D
      The Canadian Mineralogist 42 (2004) 1105-1115
      Structural variation in the lithiophilite-triphylite series
      and other olivine-group structures
      Sample: Trip79
      Locality: Palermo #1 Quarry, Groton, New Hampshire

      CELL PARAMETERS:   4.700600   10.34100   6.016600   90.00000   90.00000   90.00000
      SPACE GROUP: Pbnm
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                17.17         31.85        5.1720    0   2   0
                20.77         64.37        4.2805    1   1   0
                22.70         20.03        3.9214    0   2   1
                24.04          8.07        3.7042    1   0   1
                25.56         76.42        3.4874    1   1   1
                25.62         13.69        3.4791    1   2   0
                29.68         10.75        3.0115    1   2   1
                29.72         67.40        3.0071    0   0   2
                32.21         29.70        2.7805    1   3   0
                34.51          1.83        2.5996    0   2   2
                35.58        100.00        2.5238    1   3   1
                36.53         30.88        2.4606    1   1   2
                37.88         21.44        2.3757    0   4   1
                39.31         12.21        2.2925    2   1   0
                39.62         11.61        2.2751    1   2   2
                39.79         15.57        2.2659    1   4   0
                42.19          8.51        2.1421    2   1   1
                42.23         10.75        2.1402    2   2   0
                44.37          6.07        2.0415    1   3   2
                44.96          4.77        2.0164    2   2   1
                46.30          2.13        1.9607    0   4   2
                48.04          1.48        1.8936    1   5   0
                49.19         12.86        1.8521    2   0   2
                49.42          1.03        1.8441    1   0   3
                50.03          2.92        1.8231    2   1   2
                50.25         13.96        1.8155    1   1   3
                50.53          6.48        1.8062    1   5   1
                52.47         33.67        1.7437    2   2   2
                52.61          7.66        1.7396    2   4   0
                52.69          5.85        1.7370    1   2   3
                53.12          1.06        1.7240    0   6   0
                54.94         16.71        1.6711    2   4   1
                55.43         18.69        1.6572    0   6   1
                56.59         22.45        1.6261    1   3   3
                57.50          2.51        1.6024    1   5   2
                58.22         12.31        1.5844    0   4   3
                61.42          1.36        1.5091    2   1   3
                61.67         14.34        1.5035    0   0   4
                61.67          4.60        1.5038    2   5   1
                61.81          9.10        1.5006    3   1   1
                61.84          2.30        1.4999    3   2   0
                62.04         12.98        1.4956    0   6   2
                63.95          3.72        1.4554    3   2   1
                65.81          3.05        1.4186    1   1   4
                66.28          6.97        1.4097    1   7   0
                67.33          2.00        1.3902    2   6   0
                67.44          5.13        1.3883    3   3   1
                68.09          1.46        1.3766    1   5   3
                69.35          3.35        1.3545    2   6   1
                70.08         10.88        1.3422    3   2   2
                70.19          1.44        1.3403    3   4   0
                71.28          3.64        1.3226    1   3   4
                71.82          2.55        1.3139    2   4   3
                72.18          5.14        1.3083    3   4   1
                72.25          6.73        1.3071    0   6   3
                73.43          3.13        1.2891    3   3   2
                74.28          8.22        1.2764    1   7   2
                74.95          1.59        1.2667    2   0   4
                75.60          1.89        1.2573    2   1   4
                77.56          3.38        1.2303    2   2   4
                77.75          2.87        1.2278    2   5   3
                77.88          2.18        1.2260    3   1   3
                81.92          1.43        1.1755    4   0   0
                83.04          2.56        1.1625    3   3   3
                83.43          1.43        1.1580    1   1   5
                83.69          1.82        1.1551    2   7   2
                83.81          3.35        1.1537    3   5   2
                84.00          2.03        1.1517    1   8   2
                84.48          1.02        1.1462    4   2   0
                84.83          2.00        1.1424    2   6   3
                85.17          1.55        1.1387    3   6   1
                85.28          1.70        1.1375    2   4   4
                85.69          1.27        1.1331    0   6   4
                87.29          1.86        1.1165    1   9   0
                87.51          4.20        1.1142    3   4   3
                87.59          2.71        1.1134    2   8   1
                88.53          5.46        1.1040    1   3   5
                88.53          5.46        1.1040    1   3   5
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.