# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: |
    M. R. Querry.
    Optical constants of minerals and other materials from the millimeter to the ultraviolet.
    <a href="https://apps.dtic.mil/sti/citations/ADA192210"><i>Contractor Report</i> CRDEC-CR-88009 (1987)</a>
DATA:
  - type: tabulated nk
    data: |
        2.5000 1.388 0.000
        2.5063 1.389 0.000
        2.5126 1.390 0.001
        2.5189 1.391 0.000
        2.5253 1.390 0.000
        2.5316 1.391 0.000
        2.5381 1.391 0.000
        2.5445 1.391 0.000
        2.5510 1.390 0.000
        2.5575 1.391 0.000
        2.5641 1.391 0.000
        2.5707 1.390 0.000
        2.5773 1.387 0.000
        2.5840 1.388 0.001
        2.5907 1.390 0.001
        2.5974 1.391 0.000
        2.6042 1.389 0.000
        2.6110 1.388 0.001
        2.6178 1.389 0.002
        2.6247 1.390 0.002
        2.6316 1.391 0.001
        2.6385 1.391 0.001
        2.6455 1.393 0.000
        2.6525 1.391 0.000
        2.6596 1.390 0.000
        2.6667 1.388 0.000
        2.6738 1.390 0.000
        2.6810 1.390 0.000
        2.6882 1.390 0.000
        2.6954 1.388 0.000
        2.7027 1.389 0.000
        2.7100 1.391 0.000
        2.7174 1.390 0.000
        2.7248 1.386 0.000
        2.7322 1.388 0.000
        2.7397 1.388 0.001
        2.7473 1.390 0.000
        2.7548 1.390 0.000
        2.7624 1.390 0.000
        2.7701 1.388 0.000
        2.7778 1.387 0.000
        2.7855 1.386 0.000
        2.7933 1.386 0.000
        2.8011 1.388 0.000
        2.8090 1.388 0.000
        2.8169 1.388 0.000
        2.8249 1.387 0.000
        2.8329 1.387 0.000
        2.8409 1.388 0.000
        2.8490 1.387 0.000
        2.8571 1.387 0.000
        2.8653 1.388 0.000
        2.8736 1.390 0.000
        2.8818 1.387 0.000
        2.8902 1.387 0.000
        2.8986 1.385 0.000
        2.9070 1.384 0.000
        2.9155 1.384 0.000
        2.9240 1.388 0.001
        2.9326 1.389 0.000
        2.9412 1.386 0.000
        2.9499 1.385 0.000
        2.9586 1.384 0.000
        2.9674 1.384 0.000
        2.9762 1.383 0.000
        2.9851 1.385 0.000
        2.9940 1.385 0.000
        3.0030 1.385 0.000
        3.0120 1.383 0.000
        3.0211 1.381 0.000
        3.0303 1.382 0.001
        3.0395 1.385 0.001
        3.0488 1.384 0.000
        3.0581 1.384 0.000
        3.0675 1.383 0.000
        3.0769 1.384 0.000
        3.0864 1.383 0.000
        3.0960 1.382 0.000
        3.1056 1.383 0.000
        3.1153 1.384 0.000
        3.1250 1.382 0.000
        3.1348 1.380 0.000
        3.1447 1.379 0.000
        3.1546 1.381 0.001
        3.1646 1.382 0.000
        3.1746 1.383 0.000
        3.1847 1.380 0.000
        3.1949 1.378 0.000
        3.2051 1.378 0.001
        3.2154 1.379 0.001
        3.2258 1.379 0.001
        3.2362 1.379 0.000
        3.2468 1.377 0.000
        3.2573 1.377 0.000
        3.2680 1.375 0.000
        3.2787 1.374 0.001
        3.2895 1.371 0.002
        3.3003 1.369 0.004
        3.3113 1.367 0.007
        3.3223 1.367 0.013
        3.3333 1.370 0.018
        3.3445 1.376 0.018
        3.3557 1.377 0.015
        3.3670 1.373 0.018
        3.3784 1.376 0.026
        3.3898 1.387 0.029
        3.4014 1.394 0.023
        3.4130 1.395 0.015
        3.4247 1.393 0.013
        3.4364 1.394 0.012
        3.4483 1.394 0.008
        3.4602 1.391 0.006
        3.4722 1.389 0.005
        3.4843 1.383 0.008
        3.4965 1.386 0.014
        3.5088 1.392 0.016
        3.5211 1.400 0.011
        3.5336 1.398 0.003
        3.5461 1.393 0.001
        3.5587 1.392 0.002
        3.5714 1.392 0.002
        3.5842 1.391 0.000
        3.5971 1.388 0.000
        3.6101 1.387 0.002
        3.6232 1.388 0.004
        3.6364 1.390 0.003
        3.6496 1.391 0.002
        3.6630 1.389 0.000
        3.6765 1.389 0.000
        3.6900 1.389 0.000
        3.7037 1.387 0.000
        3.7175 1.384 0.000
        3.7313 1.384 0.001
        3.7453 1.385 0.001
        3.7594 1.385 0.001
        3.7736 1.387 0.000
        3.7879 1.385 0.000
        3.8023 1.384 0.000
        3.8168 1.382 0.001
        3.8314 1.384 0.003
        3.8462 1.386 0.001
        3.8610 1.385 0.000
        3.8760 1.383 0.000
        3.8911 1.385 0.000
        3.9063 1.385 0.000
        3.9216 1.382 0.000
        3.9370 1.381 0.000
        3.9526 1.381 0.000
        3.9683 1.382 0.000
        3.9841 1.382 0.000
        4.0000 1.382 0.000
        4.0161 1.381 0.000
        4.0323 1.380 0.000
        4.0486 1.381 0.000
        4.0650 1.382 0.000
        4.0816 1.381 0.000
        4.0984 1.379 0.000
        4.1152 1.379 0.001
        4.1322 1.380 0.001
        4.1494 1.381 0.000
        4.1667 1.381 0.000
        4.1841 1.380 0.000
        4.2017 1.378 0.000
        4.2194 1.379 0.000
        4.2373 1.380 0.000
        4.2553 1.376 0.000
        4.2735 1.377 0.000
        4.2918 1.376 0.000
        4.3103 1.377 0.000
        4.3290 1.377 0.000
        4.3478 1.378 0.000
        4.3668 1.377 0.000
        4.3860 1.377 0.000
        4.4053 1.375 0.000
        4.4248 1.376 0.001
        4.4444 1.377 0.000
        4.4643 1.376 0.000
        4.4843 1.375 0.000
        4.5045 1.374 0.000
        4.5249 1.374 0.000
        4.5455 1.373 0.000
        4.5662 1.373 0.000
        4.5872 1.372 0.000
        4.6083 1.373 0.001
        4.6296 1.374 0.000
        4.6512 1.372 0.000
        4.6729 1.372 0.000
        4.6948 1.371 0.000
        4.7170 1.371 0.000
        4.7393 1.371 0.000
        4.7619 1.371 0.000
        4.7847 1.369 0.000
        4.8077 1.368 0.001
        4.8309 1.369 0.001
        4.8544 1.367 0.002
        4.8780 1.368 0.002
        4.9020 1.368 0.002
        4.9260 1.367 0.002
        4.9505 1.367 0.004
        4.9751 1.368 0.006
        5.0000 1.370 0.005
        5.0251 1.370 0.003
        5.0505 1.368 0.003
        5.0761 1.369 0.004
        5.1020 1.370 0.003
        5.1282 1.369 0.001
        5.1546 1.368 0.001
        5.1813 1.367 0.002
        5.2083 1.368 0.001
        5.2356 1.367 0.000
        5.2632 1.364 0.000
        5.2910 1.363 0.000
        5.3191 1.363 0.003
        5.3476 1.363 0.003
        5.3763 1.364 0.004
        5.4054 1.365 0.003
        5.4348 1.365 0.002
        5.4645 1.364 0.002
        5.4945 1.363 0.002
        5.5249 1.364 0.001
        5.5556 1.363 0.000
        5.5866 1.362 0.000
        5.6180 1.360 0.000
        5.6497 1.357 0.000
        5.6818 1.356 0.000
        5.7143 1.357 0.002
        5.7471 1.357 0.001
        5.7803 1.356 0.001
        5.8140 1.356 0.000
        5.8480 1.356 0.000
        5.8824 1.355 0.000
        5.9172 1.352 0.000
        5.9524 1.350 0.000
        5.9880 1.347 0.000
        6.0241 1.347 0.000
        6.0606 1.346 0.001
        6.0976 1.346 0.001
        6.1350 1.345 0.001
        6.1728 1.344 0.001
        6.2112 1.343 0.001
        6.2500 1.342 0.000
        6.2893 1.338 0.000
        6.3291 1.336 0.001
        6.3694 1.336 0.003
        6.4103 1.335 0.002
        6.4516 1.333 0.001
        6.4935 1.329 0.000
        6.5359 1.325 0.002
        6.5789 1.323 0.003
        6.6225 1.318 0.005
        6.6667 1.313 0.008
        6.7114 1.308 0.013
        6.7568 1.306 0.023
        6.8027 1.312 0.033
        6.8493 1.323 0.036
        6.8966 1.331 0.028
        6.9444 1.332 0.019
        6.9930 1.323 0.017
        7.0423 1.321 0.026
        7.0922 1.326 0.008
        7.1429 1.311 0.000
        7.1942 1.305 0.008
        7.2464 1.297 0.003
        7.2993 1.287 0.001
        7.3529 1.275 0.010
        7.4074 1.260 0.000
        7.4627 1.238 0.005
        7.5188 1.204 0.019
        7.5758 1.191 0.097
        7.6336 1.306 0.131
        7.6923 1.280 0.028
        7.7519 1.224 0.025
        7.8125 1.150 0.032
        7.8740 1.036 0.130
        7.9365 1.116 0.380
        8.0000 1.301 0.444
        8.0645 1.588 0.361
        8.1301 1.558 0.104
        8.1967 1.455 0.043
        8.2645 1.393 0.040
        8.3333 1.352 0.045
        8.4034 1.336 0.095
        8.4746 1.384 0.095
        8.5470 1.385 0.050
        8.6207 1.360 0.035
        8.6957 1.332 0.018
        8.7719 1.301 0.024
        8.8496 1.280 0.019
        8.9286 1.251 0.020
        9.0090 1.215 0.031
        9.0909 1.174 0.035
        9.1743 1.103 0.061
        9.2593 1.007 0.119
        9.3458 0.914 0.357
        9.4340 1.135 0.573
        9.5238 1.252 0.493
        9.6154 1.247 0.673
        9.7087 1.656 0.813
        9.8039 1.948 0.421
        9.9010 1.820 0.144
        10.0000 1.695 0.066
        10.1010 1.618 0.042
        10.2041 1.560 0.030
        10.3093 1.520 0.023
        10.4167 1.484 0.021
        10.5263 1.434 0.022
        10.6383 1.386 0.031
        10.7527 1.306 0.082
        10.8696 1.304 0.265
        10.9890 1.515 0.317
        11.1111 1.569 0.210
        11.2360 1.624 0.130
        11.3636 1.563 0.044
        11.4943 1.518 0.024
        11.6279 1.470 0.024
        11.7647 1.428 0.021
        11.9048 1.367 0.034
        12.0482 1.247 0.122
        12.1951 1.404 0.435
        12.3457 1.647 0.161
        12.5000 1.481 0.098
        12.6582 1.476 0.294
        12.8205 1.712 0.134
        12.9870 1.623 0.037
        13.1579 1.576 0.016
        13.3333 1.545 0.015
        13.5135 1.524 0.012
        13.6986 1.495 0.012
        13.8889 1.459 0.039
        14.0845 1.550 0.105
        14.2857 1.541 0.030
        14.4928 1.523 0.014
        14.7059 1.509 0.012
        14.9254 1.505 0.009
        15.1515 1.490 0.005
        15.3846 1.486 0.005
        15.6250 1.478 0.007
        15.8730 1.478 0.006
        16.1290 1.478 0.006
        16.3934 1.463 0.004
        16.6667 1.463 0.004
        16.9492 1.453 0.000
        17.2414 1.446 0.000
        17.5439 1.438 0.000
        17.8571 1.433 0.000
        18.1818 1.419 0.002
        18.5185 1.410 0.003
        18.8679 1.381 0.007
        19.2308 1.349 0.012
        19.6078 1.288 0.105
        20.0000 1.455 0.269
        20.4082 1.515 0.074
        20.8333 1.458 0.061
        21.2766 1.461 0.099
        21.7391 1.495 0.075
        22.2222 1.484 0.053
        22.7273 1.472 0.034
        23.2556 1.437 0.035
        23.8095 1.393 0.109
        24.3902 1.520 0.126
        25.0000 1.527 0.111
        25.6410 1.550 0.049
        26.3158 1.524 0.016
        27.0270 1.502 0.006
        27.7778 1.483 0.002
        28.5714 1.470 0.004
        29.4118 1.456 0.007
        30.3030 1.437 0.017
        31.2500 1.424 0.044
        32.2581 1.455 0.086
        33.3333 1.503 0.062
        34.4828 1.496 0.028
        35.7143 1.480 0.016
        37.0370 1.460 0.014
        38.4615 1.447 0.019
        40.0000 1.434 0.033
        41.6667 1.430 0.047
        43.4783 1.437 0.075
        45.4545 1.457 0.094
        47.6190 1.471 0.102
        50.0000 1.508 0.095
        52.6316 1.530 0.045
        55.5556 1.504 0.044