Tourmaline,  Paraiba,  Brazil,  pink
1.84 mm,  E parallel c,  unknown composition, M Taran contributed data
340, 1.3686
341, 0.9316
342, 0.7222
343, 0.6091
344, 0.5419
345, 0.4915
346, 0.4590
347, 0.4332
348, 0.4107
349, 0.3927
350, 0.3782
351, 0.3669
352, 0.3593
353, 0.3474
354, 0.3408
355, 0.3316
356, 0.3247
357, 0.3216
358, 0.3156
359, 0.3129
360, 0.3078
361, 0.3044
362, 0.3015
363, 0.2997
364, 0.2977
365, 0.2967
366, 0.2952
367, 0.2945
368, 0.2925
369, 0.2930
370, 0.2924
371, 0.2924
372, 0.2932
373, 0.2938
374, 0.2945
375, 0.2952
376, 0.2963
377, 0.2979
378, 0.2986
379, 0.3003
380, 0.3022
381, 0.3035
382, 0.3047
383, 0.3056
384, 0.3083
385, 0.3091
386, 0.3103
387, 0.3125
388, 0.3141
389, 0.3156
390, 0.3168
391, 0.3199
392, 0.3212
393, 0.3237
394, 0.3251
395, 0.3273
396, 0.3296
397, 0.3313
398, 0.3331
399, 0.3356
400, 0.3369
401, 0.3392
402, 0.3409
403, 0.3421
404, 0.3445
405, 0.3454
406, 0.3475
407, 0.3482
408, 0.3504
409, 0.3523
410, 0.3538
411, 0.3556
412, 0.3568
413, 0.3591
414, 0.3602
415, 0.3626
416, 0.3643
417, 0.3658
418, 0.3680
419, 0.3700
420, 0.3716
421, 0.3736
422, 0.3766
423, 0.3795
424, 0.3825
425, 0.3861
426, 0.3867
427, 0.3885
428, 0.3918
429, 0.3964
430, 0.3995
431, 0.4026
432, 0.4055
433, 0.4095
434, 0.4127
435, 0.4164
436, 0.4204
437, 0.4250
438, 0.4289
439, 0.4334
440, 0.4370
441, 0.4427
442, 0.4477
443, 0.4518
444, 0.4568
445, 0.4612
446, 0.4659
447, 0.4712
448, 0.4763
449, 0.4817
450, 0.4794
451, 0.4832
452, 0.4859
453, 0.4853
454, 0.4892
455, 0.4935
456, 0.4956
457, 0.4994
458, 0.5021
459, 0.5042
460, 0.5084
461, 0.5129
462, 0.5165
463, 0.5204
464, 0.5243
465, 0.5256
466, 0.5289
467, 0.5302
468, 0.5334
469, 0.5345
470, 0.5359
471, 0.5397
472, 0.5398
473, 0.5407
474, 0.5434
475, 0.5475
476, 0.5507
477, 0.5535
478, 0.5554
479, 0.5565
480, 0.5549
481, 0.5540
482, 0.5527
483, 0.5535
484, 0.5551
485, 0.5576
486, 0.5593
487, 0.5633
488, 0.5671
489, 0.5689
490, 0.5713
491, 0.5732
492, 0.5730
493, 0.5757
494, 0.5776
495, 0.5790
496, 0.5813
497, 0.5821
498, 0.5849
499, 0.5874
500, 0.5893
501, 0.5921
502, 0.5937
503, 0.5958
504, 0.5970
505, 0.5962
506, 0.5974
507, 0.5986
508, 0.5991
509, 0.5999
510, 0.6007
511, 0.5993
512, 0.5984
513, 0.5980
514, 0.5980
515, 0.5988
516, 0.6005
517, 0.5999
518, 0.6006
519, 0.6016
520, 0.6019
521, 0.6030
522, 0.6014
523, 0.6014
524, 0.5994
525, 0.6001
526, 0.5983
527, 0.5967
528, 0.5966
529, 0.5947
530, 0.5935
531, 0.5904
532, 0.5893
533, 0.5854
534, 0.5834
535, 0.5799
536, 0.5769
537, 0.5736
538, 0.5705
539, 0.5676
540, 0.5638
541, 0.5597
542, 0.5557
543, 0.5500
544, 0.5478
545, 0.5451
546, 0.5408
547, 0.5348
548, 0.5302
549, 0.5250
550, 0.5194
551, 0.5145
552, 0.5098
553, 0.5054
554, 0.5013
555, 0.4981
556, 0.4935
557, 0.4880
558, 0.4828
559, 0.4784
560, 0.4734
561, 0.4686
562, 0.4622
563, 0.4578
564, 0.4523
565, 0.4475
566, 0.4423
567, 0.4381
568, 0.4326
569, 0.4283
570, 0.4228
571, 0.4187
572, 0.4143
573, 0.4098
574, 0.4052
575, 0.4013
576, 0.3968
577, 0.3928
578, 0.3880
579, 0.3849
580, 0.3808
581, 0.3770
582, 0.3727
583, 0.3694
584, 0.3665
585, 0.3630
586, 0.3598
587, 0.3560
588, 0.3539
589, 0.3505
590, 0.3483
591, 0.3466
592, 0.3433
593, 0.3401
594, 0.3392
595, 0.3370
596, 0.3343
597, 0.3329
598, 0.3316
599, 0.3297
600, 0.3281
601, 0.3268
602, 0.3265
603, 0.3249
604, 0.3254
605, 0.3235
606, 0.3226
607, 0.3218
608, 0.3223
609, 0.3216
610, 0.3206
611, 0.3221
612, 0.3222
613, 0.3218
614, 0.3221
615, 0.3227
616, 0.3234
617, 0.3238
618, 0.3244
619, 0.3267
620, 0.3263
621, 0.3274
622, 0.3283
623, 0.3301
624, 0.3307
625, 0.3320
626, 0.3330
627, 0.3355
628, 0.3367
629, 0.3392
630, 0.3397
631, 0.3422
632, 0.3435
633, 0.3453
634, 0.3476
635, 0.3491
636, 0.3513
637, 0.3536
638, 0.3557
639, 0.3576
640, 0.3602
641, 0.3636
642, 0.3649
643, 0.3665
644, 0.3699
645, 0.3720
646, 0.3749
647, 0.3769
648, 0.3782
649, 0.3816
650, 0.3825
651, 0.3864
652, 0.3873
653, 0.3904
654, 0.3925
655, 0.3946
656, 0.3965
657, 0.3991
658, 0.4004
659, 0.4035
660, 0.4062
661, 0.4079
662, 0.4097
663, 0.4122
664, 0.4137
665, 0.4161
666, 0.4186
667, 0.4198
668, 0.4224
669, 0.4238
670, 0.4274
671, 0.4279
672, 0.4308
673, 0.4312
674, 0.4337
675, 0.4352
676, 0.4376
677, 0.4396
678, 0.4413
679, 0.4436
680, 0.4445
681, 0.4471
682, 0.4486
683, 0.4497
684, 0.4508
685, 0.4526
686, 0.4544
687, 0.4563
688, 0.4565
689, 0.4594
690, 0.4603
691, 0.4629
692, 0.4626
693, 0.4650
694, 0.4655
695, 0.4679
696, 0.4678
697, 0.4698
698, 0.4708
699, 0.4723
700, 0.4727
701, 0.4749
702, 0.4753
703, 0.4768
704, 0.4771
705, 0.4781
706, 0.4792
707, 0.4812
708, 0.4813
709, 0.4822
710, 0.4835
711, 0.4849
712, 0.4853
713, 0.4869
714, 0.4867
715, 0.4878
716, 0.4888
717, 0.4883
718, 0.4893
719, 0.4919
720, 0.4914
721, 0.4934
722, 0.4935
723, 0.4937
724, 0.4953
725, 0.4955
726, 0.4971
727, 0.4980
728, 0.4980
729, 0.4993
730, 0.5001
732, 0.5004
734, 0.5014
736, 0.5025
738, 0.5014
740, 0.5016
742, 0.5010
744, 0.5004
746, 0.5011
748, 0.5000
750, 0.4997
752, 0.5002
754, 0.4994
756, 0.5004
758, 0.4955
760, 0.4960
762, 0.4966
764, 0.4938
766, 0.4938
768, 0.4921
770, 0.4918
772, 0.4911
774, 0.4876
776, 0.4882
778, 0.4851
780, 0.4842
782, 0.4822
784, 0.4824
786, 0.4796
788, 0.4789
790, 0.4773
792, 0.4766
794, 0.4738
796, 0.4736
798, 0.4716
800, 0.4694
802, 0.4676
804, 0.4678
806, 0.4655
808, 0.4635
810, 0.4650
812, 0.4614
814, 0.4597
816, 0.4593
818, 0.4580
820, 0.4546
822, 0.4573
824, 0.4555
826, 0.4553
828, 0.4561
830, 0.4533
832, 0.4552
834, 0.4538
836, 0.4551
838, 0.4528
840, 0.4551
842, 0.4536
844, 0.4540
846, 0.4550
848, 0.4541
850, 0.4551
852, 0.4556
854, 0.4553
856, 0.4563
858, 0.4577
860, 0.4590
862, 0.4589
864, 0.4607
866, 0.4616
868, 0.4633
870, 0.4637
872, 0.4640
874, 0.4668
876, 0.4667
878, 0.4671
880, 0.4693
882, 0.4693
884, 0.4706
886, 0.4719
888, 0.4704
890, 0.4731
892, 0.4739
894, 0.4739
896, 0.4751
898, 0.4762
900, 0.4772
902, 0.4785
904, 0.4779
906, 0.4789
908, 0.4780
910, 0.4784
912, 0.4779
914, 0.4776
916, 0.4785
918, 0.4793
920, 0.4793
922, 0.4805
924, 0.4794
926, 0.4811
928, 0.4805
930, 0.4797
932, 0.4798
934, 0.4784
936, 0.4793
938, 0.4771
940, 0.4773
942, 0.4764
944, 0.4775
946, 0.4753
948, 0.4753
950, 0.4745
952, 0.4760
954, 0.4774
956, 0.4796
958, 0.4806
960, 0.4765
962, 0.4727
964, 0.4724
966, 0.4711
968, 0.4721
970, 0.4724
972, 0.4751
974, 0.4788
976, 0.4796
978, 0.4801
980, 0.4795
982, 0.4755
984, 0.4733
986, 0.4704
988, 0.4684
990, 0.4669
992, 0.4646
994, 0.4639
996, 0.4651
998, 0.4632
1000, 0.4653
1002, 0.4508
1004, 0.4474
1006, 0.4488
1008, 0.4533
1010, 0.4458
1012, 0.4444
1014, 0.4490
1016, 0.4427
1018, 0.4378
1020, 0.4334
1022, 0.4364
1024, 0.4326
1026, 0.4312
1028, 0.4273
1030, 0.4251
1032, 0.4241
1034, 0.4216
1036, 0.4217
1038, 0.4144
1040, 0.4166
1042, 0.4141
1044, 0.4119
1046, 0.4081
1048, 0.4095
1050, 0.4053
1052, 0.4008
1054, 0.4027
1056, 0.4035
1058, 0.4004
1060, 0.3996
1062, 0.3999
1064, 0.3944
1066, 0.3955
1068, 0.3933
1070, 0.3904
1072, 0.3924
1074, 0.3840
1076, 0.3868
1078, 0.3830
1080, 0.3833
1082, 0.3797
1084, 0.3790
1086, 0.3758
1088, 0.3779
1090, 0.3779
1092, 0.3730
1094, 0.3730
1096, 0.3735
1098, 0.3673
1100, 0.3681
1102, 0.3656
1104, 0.3638
1106, 0.3599
1108, 0.3599
1110, 0.3551
1112, 0.3545
1114, 0.3559
1116, 0.3523
1118, 0.3528
1120, 0.3517
1122, 0.3503
1124, 0.3450
1126, 0.3409
1128, 0.3475
1130, 0.3416
1132, 0.3400
1134, 0.3387
1136, 0.3396
1138, 0.3346
1140, 0.3386
1142, 0.3344
1144, 0.3277
1146, 0.3287
1148, 0.3274
1150, 0.3269
1152, 0.3298
1154, 0.3242
1156, 0.3233
1158, 0.3222
1160, 0.3215
1162, 0.3199
1164, 0.3197
1166, 0.3160
1168, 0.3140
1170, 0.3096
1172, 0.3089
1174, 0.3102
1176, 0.3059
1178, 0.3080
1180, 0.3032
1182, 0.3072
1184, 0.3052
1186, 0.3021
1188, 0.3015
1190, 0.2991
1192, 0.2974
1194, 0.2931
1196, 0.2948
1198, 0.2920
1200, 0.2927
1202, 0.2870
1204, 0.2897
1206, 0.2930
1208, 0.2903
1210, 0.2863
1212, 0.2906
1214, 0.2855
1216, 0.2839
1218, 0.2840
1220, 0.2789
1222, 0.2800
1224, 0.2755
1226, 0.2743
1228, 0.2744
1230, 0.2756
1232, 0.2723
1234, 0.2726
1236, 0.2720
1238, 0.2697
1240, 0.2687
1242, 0.2657
1244, 0.2667
1246, 0.2658
1248, 0.2652
1250, 0.2662
1252, 0.2618
1254, 0.2610
1256, 0.2614
1258, 0.2600
1260, 0.2596
1262, 0.2601
1264, 0.2568
1266, 0.2579
1268, 0.2567
1270, 0.2552
1272, 0.2568
1274, 0.2560
1276, 0.2529
1278, 0.2559
1280, 0.2565
1282, 0.2557
1284, 0.2564
1286, 0.2543
1288, 0.2524
1290, 0.2558
1292, 0.2561
1294, 0.2545
1296, 0.2544
1298, 0.2516
1300, 0.2567
1302, 0.2538
1304, 0.2550
1306, 0.2601
1308, 0.2664
1310, 0.2677
1312, 0.2745
1314, 0.2809
1316, 0.2837
1318, 0.2808
1320, 0.2760
1322, 0.2812
1324, 0.2748
1326, 0.2716
1328, 0.2664
1330, 0.2620
1332, 0.2572
1334, 0.2566
1336, 0.2529
1338, 0.2481
1340, 0.2503
1342, 0.2498
1344, 0.2492
1346, 0.2468
1348, 0.2482
1350, 0.2471
1352, 0.2477
1354, 0.2494
1356, 0.2487
1358, 0.2480
1360, 0.2511
1362, 0.2489
1364, 0.2492
1366, 0.2476
1368, 0.2477
1370, 0.2524
1372, 0.2552
1374, 0.2536
1376, 0.2595
1378, 0.2657
1380, 0.2724
1382, 0.2763
1384, 0.2771
1386, 0.2829
1388, 0.2926
1390, 0.2998
1392, 0.3132
1394, 0.3516
1396, 0.4070
1398, 0.4882
1400, 0.5901
1402, 0.6580
1404, 0.6009
1406, 0.4402
1408, 0.3552
1410, 0.3299
1412, 0.3289
1414, 0.3402
1416, 0.3626
1418, 0.4143
1420, 0.4881
1422, 0.5956
1424, 0.7239
1426, 0.8477
1428, 0.9319
1430, 0.9403
1432, 0.8865
1434, 0.7884
1436, 0.6761
1438, 0.5907
1440, 0.5217
1442, 0.4677
1444, 0.4376
1446, 0.4128
1448, 0.3960
1450, 0.3862
1452, 0.3844
1454, 0.3873
1456, 0.4045
1458, 0.4224
1460, 0.4460
1462, 0.4743
1464, 0.4978
1466, 0.5343
1468, 0.5684
1470, 0.5949
1472, 0.6331
1474, 0.6556
1476, 0.6859
1478, 0.6969
1480, 0.6921
1482, 0.7021
1484, 0.6985
1486, 0.6857
1488, 0.6669
1490, 0.6299
1492, 0.5996
1494, 0.5565
1496, 0.5315
1498, 0.5020
1500, 0.4704
1502, 0.4411
1504, 0.4166
1506, 0.3929
1508, 0.3727
1510, 0.3591
1512, 0.3393
1514, 0.3227
1516, 0.3142
1518, 0.3044
1520, 0.3007
1522, 0.2894
1524, 0.2849
1526, 0.2868
1528, 0.2880
1530, 0.2811
1532, 0.2848
1534, 0.2807
1536, 0.2847
1538, 0.2803
1540, 0.2775
1542, 0.2787
1544, 0.2747
1546, 0.2758
1548, 0.2690
1550, 0.2799
1552, 0.2783
1554, 0.2737
1556, 0.2681
1558, 0.2688
1560, 0.2686
1562, 0.2698
1564, 0.2672
1566, 0.2681
1568, 0.2640
1570, 0.2629
1572, 0.2668
1574, 0.2628
1576, 0.2623
1578, 0.2618
1580, 0.2613
1582, 0.2622
1584, 0.2655
1586, 0.2653
1588, 0.2648
1590, 0.2686
1592, 0.2654
1594, 0.2683
1596, 0.2635
1598, 0.2689
1600, 0.2688
1602, 0.2657
1604, 0.2694
1606, 0.2666
1608, 0.2674
1610, 0.2666
1612, 0.2649
1614, 0.2604
1616, 0.2674
1618, 0.2648
1620, 0.2618
1622, 0.2686
1624, 0.2603
1626, 0.2617
1628, 0.2544
1630, 0.2588
1632, 0.2493
1634, 0.2529
1636, 0.2572
1638, 0.2518
1640, 0.2572
1642, 0.2512
1644, 0.2547
1646, 0.2504
1648, 0.2495
1650, 0.2501
1652, 0.2482
1654, 0.2476
1656, 0.2497
1658, 0.2554
1660, 0.2534
1662, 0.2496
1664, 0.2501
1666, 0.2545
1668, 0.2591
1670, 0.2603
1672, 0.2556
1674, 0.2629
1676, 0.2624
1678, 0.2608
1680, 0.2644
1682, 0.2624
1684, 0.2677
1686, 0.2620
1688, 0.2684
1690, 0.2676
1692, 0.2680
1694, 0.2655
1696, 0.2700
1698, 0.2773
1700, 0.2715
1702, 0.2716
1704, 0.2646
1706, 0.2737
1708, 0.2690
1710, 0.2782
1712, 0.2636
1714, 0.2686
1716, 0.2651
1718, 0.2655
1720, 0.2672
1722, 0.2679
1724, 0.2744
1726, 0.2583
1728, 0.2669
1730, 0.2616
1732, 0.2621
1734, 0.2659
1736, 0.2685
1738, 0.2690
1740, 0.2634
1742, 0.2667
1744, 0.2656
1746, 0.2726
1748, 0.2767
1750, 0.2747
1752, 0.2784
1754, 0.2771
1756, 0.2824
1758, 0.2825
1760, 0.2863
1762, 0.2909
1764, 0.2848
1766, 0.2898
1768, 0.2898
1770, 0.2995
1772, 0.3029
1774, 0.3029
1776, 0.2976
1778, 0.3029
1780, 0.3041
1782, 0.3057
1784, 0.3106
1786, 0.3158
1788, 0.3098
1790, 0.3081
1792, 0.3020
1794, 0.3001
1796, 0.3026
1798, 0.3014
1800, 0.3049
1810, 0.3041
1820, 0.3069
1830, 0.3104
1840, 0.3156
1850, 0.3254
1860, 0.3275
1870, 0.3186
1880, 0.3102
1890, 0.3191
1900, 0.3449
1910, 0.3877
1920, 0.4543
1930, 0.4926
1940, 0.4737
1950, 0.4579
1960, 0.4363
1970, 0.4174
1980, 0.4045
1990, 0.3992
2000, 0.3896
2010, 0.3847
2020, 0.3946
2030, 0.4131
2040, 0.4332
2050, 0.4627
2060, 0.4518
2070, 0.4463
2080, 0.4474
2090, 0.4572
2100, 0.4537
2110, 0.4602
2120, 0.4719
2130, 0.4806
2140, 0.4809
2150, 0.4923
2160, 0.4928
2170, 0.4820
2180, 0.4739
2190, 0.4417
2200, 0.4193
2210, 0.4862
2220, 0.5095
2230, 0.4747
2240, 0.4714
2250, 0.4805
2260, 0.5181
2270, 0.5175
2280, 0.5527
2290, 0.7212
2300, 1.0920
2310, 1.3507
2320, 1.0327
2330, 0.7915
2340, 0.6964
2350, 0.7407
2360, 0.8981
2370, 0.9380
2380, 0.9836
2390, 1.0822
2400, 1.0746
2410, 1.1028
2420, 0.9915
2430, 1.0969
2440, 1.1038
2450, 1.1864
2460, 1.4654
2470, 1.7068
2480, 1.9908
2490, 2.9952
2500, 2.7488