# 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 1.388 0.000
        2.5126 1.386 0.000
        2.5189 1.387 0.000
        2.5253 1.388 0.000
        2.5306 1.387 0.000
        2.5381 1.385 0.000
        2.5445 1.386 0.000
        2.5510 1.388 0.000
        2.5575 1.387 0.000
        2.5641 1.335 0.000
        2.5707 1.385 0.000
        2.5773 1.386 0.000
        2.5840 1.386 0.000
        2.5907 1.385 0.000
        2.5974 1.366 0.000
        2.6042 1.389 0.000
        2.6110 1.388 0.000
        2.6178 1.388 0.000
        2.6247 1.387 0.000
        2.6316 1.386 0.000
        2.6385 1.386 0.000
        2.6455 1.388 0.000
        2.6525 1.389 0.000
        2.6596 1.388 0.000
        2.6667 1.386 0.000
        2.6738 1.387 0.000
        2.6810 1.387 0.000
        2.6882 1.388 0.000
        2.6954 1.387 0.000
        2.7027 1.386 0.000
        2.7100 1.386 0.000
        2.7174 1.387 0.000
        2.7248 1.387 0.000
        2.7322 1.385 0.000
        2.7397 1.382 0.000
        2.7473 1.385 0.000
        2.7548 1.385 0.000
        2.7624 1.385 0.000
        2.7701 1.383 0.000
        2.7778 1.385 0.000
        2.7855 1.384 0.000
        2.7933 1.386 0.000
        2.8011 1.386 0.000
        2.8090 1.385 0.000
        2.8169 1.384 0.000
        2.8249 1.384 0.000
        2.8329 1.385 0.000
        2.8409 1.385 0.000
        2.8490 1.385 0.000
        2.8571 1.386 0.000
        2.8653 1.387 0.000
        2.8736 1.384 0.000
        2.8818 1.383 0.000
        2.8902 1.382 0.000
        2.8986 1.382 0.000
        2.9070 1.383 0.000
        2.9155 1.384 0.001
        2.9240 1.385 0.000
        2.9326 1.386 0.000
        2.9412 1.385 0.000
        2.9499 1.383 0.000
        2.9586 1.383 0.000
        2.9674 1.383 0.000
        2.9762 1.382 0.000
        2.9851 1.381 0.000
        2.9940 1.383 0.000
        3.0030 1.385 0.000
        3.0120 1.385 0.000
        3.0211 1.384 0.000
        3.0303 1.384 0.000
        3.0395 1.383 0.000
        3.0488 1.381 0.000
        3.0581 1.380 0.000
        3.0675 1.381 0.000
        3.0769 1.381 0.000
        3.0864 1.382 0.000
        3.0960 1.380 0.000
        3.1056 1.378 0.000
        3.1153 1.377 0.000
        3.1250 1.380 0.001
        3.1348 1.381 0.000
        3.1447 1.381 0.000
        3.1546 1.379 0.000
        3.1646 1.378 0.000
        3.1746 1.377 0.000
        3.1847 1.378 0.000
        3.1949 1.378 0.000
        3.2051 1.377 0.000
        3.2154 1.375 0.000
        3.2258 1.374 0.000
        3.2362 1.374 0.000
        3.2468 1.372 0.000
        3.2573 1.372 0.000
        3.2680 1.372 0.000
        3.2787 1.371 0.000
        3.2895 1.369 0.000
        3.3003 1.367 0.000
        3.3113 1.361 0.000
        3.3223 1.352 0.001
        3.3333 1.346 0.007
        3.3445 1.337 0.031
        3.3557 1.362 0.067
        3.3670 1.406 0.043
        3.3784 1.397 0.019
        3.3898 1.386 0.017
        3.4014 1.383 0.024
        3.4130 1.397 0.027
        3.4247 1.403 0.017
        3.4364 1.396 0.011
        3.4483 1.399 0.005
        3.4602 1.391 0.006
        3.4722 1.391 0.014
        3.4843 1.395 0.006
        3.4965 1.395 0.005
        3.5088 1.393 0.003
        3.5211 1.391 0.003
        3.5336 1.391 0.002
        3.5461 1.390 0.001
        3.5587 1.389 0.000
        3.5714 1.387 0.001
        3.5842 1.388 0.003
        3.5971 1.389 0.002
        3.6101 1.389 0.001
        3.6232 1.388 0.000
        3.6364 1.386 0.000
        3.6496 1.385 0.000
        3.6630 1.385 0.000
        3.6765 1.385 0.001
        3.6900 1.385 0.001
        3.7037 1.385 0.001
        3.7175 1.386 0.000
        3.7313 1.385 0.001
        3.7453 1.387 0.001
        3.7594 1.387 0.000
        3.7736 1.385 0.000
        3.7879 1.381 0.000
        3.8023 1.380 0.001
        3.8168 1.383 0.003
        3.8314 1.384 0.001
        3.8462 1.384 0.000
        3.8610 1.383 0.000
        3.8760 1.383 0.001
        3.8911 1.384 0.000
        3.9063 1.383 0.000
        3.9216 1.383 0.000
        3.9370 1.383 0.000
        3.9526 1.382 0.000
        3.9683 1.382 0.000
        3.9841 1.383 0.000
        4.0000 1.383 0.000
        4.0161 1.382 0.000
        4.0323 1.382 0.000
        4.0486 1.381 0.000
        4.0650 1.379 0.000
        4.0816 1.378 0.000
        4.0984 1.378 0.000
        4.1152 1.379 0.000
        4.1322 1.378 0.000
        4.1494 1.377 0.000
        4.1667 1.377 0.001
        4.1841 1.380 0.000
        4.2017 1.379 0.000
        4.2194 1.379 0.000
        4.2373 1.378 0.000
        4.2553 1.379 0.000
        4.2735 1.377 0.000
        4.2918 1.376 0.000
        4.3103 1.375 0.000
        4.3290 1.376 0.001
        4.3478 1.377 0.001
        4.3668 1.377 0.000
        4.3860 1.375 0.000
        4.4053 1.376 0.002
        4.4248 1.378 0.001
        4.4444 1.377 0.000
        4.4643 1.375 0.000
        4.4843 1.375 0.002
        4.5045 1.376 0.002
        4.5249 1.377 0.001
        4.5455 1.375 0.000
        4.5662 1.375 0.000
        4.5872 1.375 0.000
        4.6083 1.374 0.000
        4.6296 1.374 0.000
        4.6512 1.373 0.000
        4.6729 1.373 0.000
        4.6948 1.372 0.000
        4.7170 1.371 0.002
        4.7393 1.372 0.003
        4.7619 1.373 0.003
        4.7847 1.372 0.002
        4.8077 1.373 0.003
        4.8309 1.373 0.003
        4.8544 1.374 0.003
        4.8780 1.373 0.001
        4.9020 1.373 0.001
        4.9261 1.371 0.001
        4.9505 1.371 0.002
        4.9751 1.370 0.003
        5.0000 1.371 0.005
        5.0251 1.373 0.004
        5.0505 1.373 0.003
        5.0761 1.372 0.002
        5.1020 1.372 0.003
        5.1282 1.373 0.003
        5.1546 1.373 0.002
        5.1813 1.371 0.001
        5.2083 1.371 0.001
        5.2356 1.370 0.001
        5.2632 1.370 0.002
        5.2910 1.370 0.001
        5.3191 1.369 0.001
        5.3476 1.369 0.001
        5.3763 1.368 0.001
        5.4054 1.368 0.001
        5.4348 1.367 0.000
        5.4645 1.367 0.001
        5.4945 1.366 0.001
        5.5249 1.366 0.001
        5.5556 1.366 0.000
        5.5866 1.363 0.000
        5.6180 1.361 0.001
        5.6497 1.361 0.004
        5.6818 1.363 0.004
        5.7143 1.363 0.002
        5.7471 1.362 0.001
        5.7803 1.360 0.003
        5.8140 1.360 0.004
        5.8480 1.361 0.005
        5.8824 1.362 0.004
        5.9172 1.362 0.003
        5.9524 1.360 0.002
        5.9880 1.359 0.003
        6.0240 1.360 0.003
        6.0606 1.359 0.002
        6.0976 1.358 0.001
        6.1350 1.356 0.000
        6.1728 1.355 0.001
        6.2112 1.354 0.001
        6.2500 1.353 0.001
        6.2893 1.352 0.001
        6.3291 1.350 0.000
        6.3694 1.349 0.000
        6.4103 1.346 0.000
        6.4516 1.344 0.002
        6.4935 1.343 0.002
        6.5359 1.343 0.002
        6.5789 1.343 0.002
        6.6225 1.333 0.001
        6.6667 1.329 0.005
        6.7114 1.329 0.005
        6.7568 1.323 0.004
        6.8027 1.321 0.026
        6.8493 1.337 0.023
        6.8966 1.341 0.019
        6.9444 1.335 0.012
        6.9930 1.324 0.012
        7.0423 1.319 0.015
        7.0922 1.317 0.010
        7.1429 1.297 0.013
        7.1942 1.272 0.055
        7.2464 1.327 0.070
        7.2993 1.376 0.055
        7.3529 1.347 0.021
        7.4074 1.336 0.022
        7.4627 1.326 0.015
        7.5188 1.307 0.009
        7.5758 1.273 0.032
        7.6336 1.329 0.086
        7.6923 1.325 0.022
        7.7519 1.296 0.021
        7.8125 1.267 0.034
        7.8740 1.234 0.063
        7.9365 1.215 0.117
        8.0000 1.225 0.266
        8.0645 1.500 0.245
        8.1301 1.465 0.069
        8.1967 1.411 0.035
        8.2645 1.386 0.033
        8.3333 1.362 0.028
        8.4034 1.336 0.033
        8.4746 1.334 0.074
        8.5470 1.357 0.046
        8.6207 1.342 0.036
        8.6957 1.305 0.041
        8.7719 1.340 0.083
        8.8496 1.321 0.045
        8.9286 1.286 0.061
        9.0090 1.334 0.143
        9.0909 1.386 0.057
        9.1743 1.337 0.024
        9.2593 1.296 0.019
        9.3458 1.268 0.019
        9.4340 1.232 0.025
        9.5236 1.188 0.039
        9.6154 1.117 0.064
        9.7087 1.019 0.144
        9.8039 0.971 0.380
        9.9010 1.196 0.542
        10.0000 1.233 0.489
        10.1010 1.325 0.721
        10.2041 1.802 0.742
        10.3093 1.932 0.267
        10.4167 1.754 0.104
        10.5263 1.662 0.063
        10.6383 1.594 0.050
        10.7527 1.535 0.052
        10.8696 1.500 0.124
        10.9890 1.572 0.100
        11.1111 1.556 0.119
        11.2360 1.591 0.051
        11.3636 1.555 0.029
        11.4943 1.540 0.017
        11.6279 1.521 0.009
        11.7647 1.504 0.009
        11.9048 1.487 0.004
        12.0482 1.474 0.007
        12.1951 1.460 0.009
        12.3457 1.432 0.016
        12.5000 1.396 0.068
        12.6582 1.497 0.150
        12.8205 1.540 0.034
        12.9870 1.496 0.015
        13.1579 1.476 0.014
        13.3333 1.477 0.032
        13.5135 1.477 0.015
        13.6986 1.454 0.013
        13.8889 1.459 0.060
        14.0845 1.498 0.022
        14.2857 1.483 0.009
        14.4928 1.473 0.002
        14.7059 1.469 0.002
        14.9254 1.456 0.000
        15.1515 1.454 0.000
        15.3846 1.451 0.003
        15.6250 1.446 0.002
        15.8730 1.440 0.000
        16.1290 1.438 0.000
        16.3934 1.435 0.001
        16.6667 1.426 0.000
        16.9492 1.421 0.000
        17.2414 1.412 0.004
        17.5439 1.409 0.004
        17.8571 1.402 0.014
        18.1818 1.400 0.018
        18.5185 1.388 0.018
        18.8679 1.358 0.032
        19.2308 1.349 0.100
        19.6078 1.391 0.147
        20.0000 1.508 0.147
        20.4082 1.504 0.064
        20.8333 1.492 0.044
        21.2766 1.477 0.028
        21.7391 1.466 0.026
        22.2222 1.460 0.028
        22.7273 1.453 0.033
        23.2558 1.452 0.043
        23.8095 1.468 0.045
        24.3902 1.474 0.039
        25.0000 1.471 0.031
        25.6410 1.474 0.028
        26.3158 1.475 0.024
        27.0270 1.480 0.015
        27.7778 1.472 0.005
        28.5714 1.467 0.005
        29.4118 1.458 0.001
        30.3030 1.454 0.005
        31.2500 1.451 0.006
        32.2581 1.450 0.008
        33.3333 1.449 0.008
        34.4828 1.444 0.016
        35.7143 1.449 0.024
        37.0370 1.458 0.026
        38.4615 1.469 0.024
        40.0000 1.477 0.011
        41.6667 1.472 0.000
        43.4783 1.463 0.000
        45.4545 1.449 0.000
        47.6190 1.458 0.000
        50.0000 1.453 0.000
        52.6316 1.448 0.000
        55.5556 1.441 0.000