Goethite, locality unknown, a thin section from the optical mineralogy lab.
0.027mm, E||a = gamma
545.58, 3.2902
546.18, 3.3765
546.78, 3.2894
547.3, 3.2954
547.9, 3.2505
548.5, 3.2312
549.09, 3.2366
549.69, 3.1778
550.29, 3.1387
550.89, 3.0731
551.49, 3.0090
552.09, 2.9715
552.68, 2.9120
553.28, 2.8228
553.88, 2.7515
554.48, 2.6988
555.08, 2.6183
555.68, 2.5503
556.28, 2.4843
556.87, 2.4169
557.47, 2.3600
558.07, 2.2958
558.67, 2.2352
559.27, 2.1822
559.87, 2.1262
560.47, 2.0728
561.06, 2.0221
561.66, 1.9750
562.26, 1.9307
562.86, 1.8864
563.46, 1.8464
564.06, 1.8082
564.66, 1.7712
565.25, 1.7348
565.85, 1.7034
566.45, 1.6732
567.05, 1.6424
567.65, 1.6146
568.25, 1.5888
568.84, 1.5636
569.44, 1.5408
570.04, 1.5193
570.64, 1.4992
571.24, 1.4795
571.84, 1.4625
572.44, 1.4465
573.03, 1.4309
573.63, 1.4164
574.23, 1.4030
574.83, 1.3913
575.43, 1.3805
576.03, 1.3700
576.63, 1.3604
577.22, 1.3527
577.82, 1.3445
578.42, 1.3374
579.02, 1.3315
579.62, 1.3258
580.22, 1.3218
580.81, 1.3183
581.33, 1.3138
581.93, 1.3110
582.53, 1.3090
583.13, 1.3071
583.72, 1.3055
584.32, 1.3045
584.92, 1.3036
585.52, 1.3043
586.12, 1.3042
586.72, 1.3054
587.32, 1.3061
587.91, 1.3075
588.51, 1.3094
589.11, 1.3113
589.71, 1.3137
590.31, 1.3158
590.91, 1.3189
591.5, 1.3215
592.1, 1.3252
592.7, 1.3285
593.3, 1.3322
593.9, 1.3363
594.5, 1.3397
595.09, 1.3440
595.69, 1.3476
596.29, 1.3519
596.89, 1.3567
597.49, 1.3615
598.09, 1.3663
598.68, 1.3711
599.28, 1.3759
599.88, 1.3806
600.48, 1.3853
601.08, 1.3908
601.68, 1.3965
602.28, 1.4011
602.87, 1.4060
603.47, 1.4116
604.07, 1.4166
604.67, 1.4219
605.27, 1.4267
605.87, 1.4326
606.46, 1.4371
607.06, 1.4430
607.66, 1.4476
608.23, 1.4532
608.82, 1.4584
609.42, 1.4633
610.02, 1.4688
610.61, 1.4746
611.21, 1.4796
611.81, 1.4846
612.4, 1.4898
613., 1.4953
613.6, 1.5009
614.19, 1.5053
614.79, 1.5115
615.39, 1.5154
615.98, 1.5211
616.58, 1.5255
617.18, 1.5301
617.78, 1.5356
618.37, 1.5412
618.96, 1.5449
619.56, 1.5504
620.16, 1.5552
620.75, 1.5599
621.35, 1.5641
621.95, 1.5683
622.54, 1.5731
623.14, 1.5774
623.74, 1.5821
624.34, 1.5857
624.93, 1.5900
625.53, 1.5949
626.13, 1.5984
626.72, 1.6024
627.32, 1.6049
627.92, 1.6090
628.51, 1.6134
629.11, 1.6165
629.71, 1.6203
630.3, 1.6223
630.9, 1.6269
631.5, 1.6291
632.09, 1.6322
632.69, 1.6358
633.29, 1.6379
633.88, 1.6414
634.48, 1.6436
635.08, 1.6465
635.67, 1.6495
636.27, 1.6517
636.87, 1.6536
637.46, 1.6556
638.06, 1.6586
638.66, 1.6607
639.25, 1.6625
639.85, 1.6641
640.45, 1.6669
641.04, 1.6675
641.64, 1.6696
642.24, 1.6715
642.83, 1.6714
643.43, 1.6738
644.03, 1.6753
644.62, 1.6774
645.22, 1.6776
645.82, 1.6789
646.41, 1.6796
647.01, 1.6802
647.61, 1.6810
648.2, 1.6826
648.8, 1.6828
649.4, 1.6827
649.99, 1.6819
650.59, 1.6836
651.19, 1.6833
651.78, 1.6837
652.38, 1.6842
652.98, 1.6830
653.57, 1.6832
654.17, 1.6835
654.77, 1.6826
655.36, 1.6816
655.96, 1.6814
656.56, 1.6806
657.15, 1.6785
657.75, 1.6767
658.35, 1.6767
658.94, 1.6760
659.54, 1.6740
660.14, 1.6728
660.73, 1.6701
661.33, 1.6698
661.93, 1.6675
662.52, 1.6645
663.12, 1.6622
663.72, 1.6597
664.31, 1.6572
664.9, 1.6548
665.5, 1.6521
666.09, 1.6490
666.69, 1.6458
667.29, 1.6429
667.88, 1.6392
668.48, 1.6364
669.08, 1.6330
669.67, 1.6291
670.27, 1.6253
670.86, 1.6216
671.46, 1.6191
672.06, 1.6138
672.65, 1.6107
673.25, 1.6059
673.85, 1.6016
674.44, 1.5967
675.04, 1.5916
675.64, 1.5882
676.23, 1.5817
676.83, 1.5774
677.43, 1.5725
678.02, 1.5681
678.62, 1.5631
679.22, 1.5581
679.81, 1.5521
680.41, 1.5471
681.01, 1.5414
681.6, 1.5349
682.2, 1.5300
682.8, 1.5239
683.39, 1.5179
683.99, 1.5129
684.59, 1.5061
685.18, 1.5002
685.78, 1.4932
686.38, 1.4880
686.97, 1.4811
687.57, 1.4751
688.17, 1.4689
688.76, 1.4621
689.36, 1.4553
689.96, 1.4486
690.55, 1.4417
691.15, 1.4351
691.75, 1.4280
692.34, 1.4217
692.94, 1.4151
693.54, 1.4076
694.13, 1.4009
694.73, 1.3929
695.33, 1.3859
695.92, 1.3792
696.52, 1.3712
697.12, 1.3646
697.71, 1.3565
698.31, 1.3499
698.91, 1.3423
699.5, 1.3353
700.1, 1.3280
700.69, 1.3192
701.29, 1.3123
701.89, 1.3048
702.48, 1.2973
703.08, 1.2898
703.68, 1.2822
704.27, 1.2748
704.87, 1.2675
705.47, 1.2599
706.06, 1.2521
706.66, 1.2444
707.26, 1.2366
707.85, 1.2289
708.45, 1.2212
709.05, 1.2131
709.64, 1.2058
710.24, 1.1987
710.84, 1.1909
711.41, 1.1833
712.01, 1.1763
712.61, 1.1691
713.2, 1.1612
713.8, 1.1532
714.4, 1.1458
714.99, 1.1385
715.59, 1.1308
716.19, 1.1233
716.78, 1.1160
717.38, 1.1087
717.98, 1.1019
718.57, 1.0945
719.17, 1.0871
719.77, 1.0803
720.36, 1.0733
720.96, 1.0662
721.55, 1.0594
722.15, 1.0525
722.75, 1.0463
723.34, 1.0396
723.94, 1.0329
724.54, 1.0271
725.13, 1.0208
725.73, 1.0141
726.33, 1.0077
726.92, 1.0013
727.52, 0.9961
728.12, 0.9901
728.71, 0.9844
729.31, 0.9784
729.91, 0.9729
730.5, 0.9675
731.1, 0.9621
731.7, 0.9563
732.29, 0.9510
732.89, 0.9460
733.48, 0.9411
734.08, 0.9362
734.68, 0.9314
735.27, 0.9270
735.87, 0.9220
736.47, 0.9176
737.06, 0.9135
737.66, 0.9086
738.26, 0.9044
738.85, 0.9011
739.45, 0.8972
740.05, 0.8931
740.64, 0.8894
741.24, 0.8862
741.84, 0.8820
742.43, 0.8785
743.03, 0.8752
743.63, 0.8726
744.22, 0.8690
744.82, 0.8660
745.41, 0.8629
746.01, 0.8607
746.61, 0.8580
747.2, 0.8560
747.8, 0.8535
748.4, 0.8510
748.99, 0.8489
749.59, 0.8471
750.19, 0.8443
750.78, 0.8426
751.38, 0.8409
751.98, 0.8394
752.57, 0.8376
753.17, 0.8365
753.77, 0.8356
754.36, 0.8344
754.96, 0.8330
755.55, 0.8326
756.15, 0.8318
756.75, 0.8305
757.34, 0.8296
757.94, 0.8288
758.51, 0.8283
759.11, 0.8282
759.7, 0.8280
760.3, 0.8276
760.9, 0.8275
761.49, 0.8275
762.09, 0.8278
762.68, 0.8280
763.28, 0.8283
763.88, 0.8282
764.47, 0.8288
765.07, 0.8293
765.67, 0.8300
766.26, 0.8308
766.86, 0.8317
767.46, 0.8330
768.05, 0.8336
768.65, 0.8348
769.25, 0.8359
769.84, 0.8376
770.44, 0.8386
771.03, 0.8400
771.63, 0.8418
772.23, 0.8436
772.82, 0.8456
773.42, 0.8472
774.02, 0.8490
774.61, 0.8513
775.21, 0.8532
775.81, 0.8552
776.4, 0.8577
777., 0.8601
777.59, 0.8619
778.19, 0.8640
778.79, 0.8665
779.38, 0.8692
779.98, 0.8714
780.58, 0.8746
781.17, 0.8783
781.77, 0.8804
782.37, 0.8830
782.96, 0.8858
783.56, 0.8885
784.16, 0.8921
784.75, 0.8955
785.35, 0.8989
785.94, 0.9021
786.54, 0.9054
787.14, 0.9090
787.73, 0.9122
788.33, 0.9159
788.93, 0.9189
789.52, 0.9227
790.12, 0.9266
790.72, 0.9306
791.31, 0.9343
791.91, 0.9379
792.5, 0.9423
793.1, 0.9462
793.7, 0.9499
794.29, 0.9536
794.89, 0.9580
795.49, 0.9621
796.08, 0.9659
796.68, 0.9704
797.28, 0.9745
797.87, 0.9787
798.47, 0.9835
799.07, 0.9878
799.66, 0.9923
800.26, 0.9964
800.85, 1.0011
801.45, 1.0049
802.05, 1.0096
802.64, 1.0144
803.24, 1.0190
803.84, 1.0236
804.43, 1.0278
804.99, 1.0330
805.59, 1.0377
806.19, 1.0428
806.78, 1.0473
807.38, 1.0514
807.98, 1.0563
808.57, 1.0611
809.17, 1.0662
809.76, 1.0706
810.36, 1.0750
810.96, 1.0800
811.55, 1.0850
812.15, 1.0898
812.75, 1.0946
813.34, 1.0997
813.94, 1.1040
814.53, 1.1096
815.13, 1.1140
815.73, 1.1189
816.32, 1.1236
816.92, 1.1288
817.52, 1.1339
818.11, 1.1392
818.71, 1.1440
819.31, 1.1486
819.9, 1.1538
820.5, 1.1583
821.09, 1.1635
821.69, 1.1687
822.29, 1.1734
822.88, 1.1782
823.48, 1.1837
824.08, 1.1886
824.67, 1.1932
825.27, 1.1980
825.86, 1.2022
826.46, 1.2076
827.06, 1.2128
827.65, 1.2175
828.25, 1.2227
828.85, 1.2277
829.44, 1.2315
830.04, 1.2356
830.63, 1.2409
831.23, 1.2462
831.83, 1.2511
832.42, 1.2559
833.02, 1.2609
833.62, 1.2647
834.21, 1.2705
834.81, 1.2748
835.41, 1.2790
836., 1.2845
836.6, 1.2890
837.19, 1.2935
837.79, 1.2991
838.39, 1.3047
838.98, 1.3073
839.58, 1.3116
840.18, 1.3170
840.77, 1.3202
841.37, 1.3250
841.96, 1.3299
842.56, 1.3346
843.16, 1.3387
843.75, 1.3432
844.35, 1.3468
844.95, 1.3517
845.54, 1.3556
846.14, 1.3594
846.73, 1.3637
847.33, 1.3675
847.93, 1.3725
848.52, 1.3780
849.12, 1.3806
849.72, 1.3842
850.31, 1.3887
850.91, 1.3930
851.46, 1.3969
852.06, 1.4005
852.65, 1.4034
853.25, 1.4076
853.85, 1.4114
854.44, 1.4149
855.04, 1.4181
855.64, 1.4220
856.23, 1.4262
856.83, 1.4289
857.42, 1.4316
858.02, 1.4350
858.62, 1.4379
859.21, 1.4422
859.81, 1.4452
860.41, 1.4482
861., 1.4508
861.6, 1.4545
862.19, 1.4571
862.79, 1.4591
863.39, 1.4630
863.98, 1.4660
864.58, 1.4682
865.17, 1.4718
865.77, 1.4743
866.37, 1.4758
866.96, 1.4781
867.56, 1.4811
868.16, 1.4834
868.75, 1.4839
869.35, 1.4880
869.94, 1.4896
870.54, 1.4912
871.14, 1.4944
871.73, 1.4960
872.33, 1.4981
872.93, 1.5001
873.52, 1.5008
874.12, 1.5027
874.71, 1.5044
875.31, 1.5072
875.91, 1.5076
876.5, 1.5083
877.1, 1.5105
877.7, 1.5127
878.29, 1.5138
878.89, 1.5156
879.48, 1.5154
880.08, 1.5164
880.68, 1.5185
881.27, 1.5191
881.87, 1.5191
882.46, 1.5205
883.06, 1.5225
883.66, 1.5221
884.25, 1.5229
884.85, 1.5239
885.45, 1.5245
886.04, 1.5249
886.64, 1.5249
887.23, 1.5267
887.83, 1.5261
888.43, 1.5271
889.02, 1.5263
889.62, 1.5266
890.22, 1.5277
890.81, 1.5276
891.41, 1.5281
892., 1.5279
892.6, 1.5279
893.2, 1.5267
893.79, 1.5283
894.39, 1.5266
894.98, 1.5275
895.58, 1.5267
896.18, 1.5261
896.77, 1.5264
897.37, 1.5253
897.97, 1.5242
898.51, 1.5247
899.11, 1.5249
899.7, 1.5249
900.3, 1.5235
900.9, 1.5236
901.49, 1.5227
902.09, 1.5221
902.68, 1.5194
903.28, 1.5207
903.88, 1.5192
904.47, 1.5184
905.07, 1.5166
905.66, 1.5158
906.26, 1.5152
906.86, 1.5138
907.45, 1.5126
908.05, 1.5107
908.64, 1.5104
909.24, 1.5094
909.84, 1.5086
910.43, 1.5082
911.03, 1.5046
911.63, 1.5048
912.22, 1.5023
912.82, 1.5023
913.41, 1.4991
914.01, 1.4974
914.61, 1.4955
915.2, 1.4941
915.8, 1.4935
916.39, 1.4915
916.99, 1.4907
917.59, 1.4881
918.18, 1.4856
918.78, 1.4863
919.37, 1.4820
919.97, 1.4823
920.57, 1.4795
921.16, 1.4770
921.76, 1.4754
922.35, 1.4741
922.95, 1.4721
923.55, 1.4705
924.14, 1.4679
924.74, 1.4669
925.34, 1.4649
925.93, 1.4616
926.53, 1.4615
927.12, 1.4586
927.72, 1.4556
928.32, 1.4542
928.91, 1.4516
929.51, 1.4496
930.1, 1.4496
930.7, 1.4465
931.3, 1.4438
931.89, 1.4413
932.49, 1.4389
933.08, 1.4361
933.68, 1.4338
934.28, 1.4332
934.87, 1.4301
935.47, 1.4283
936.07, 1.4265
936.66, 1.4244
937.26, 1.4216
937.85, 1.4188
938.45, 1.4166
939.05, 1.4129
939.64, 1.4127
940.24, 1.4091
940.83, 1.4061
941.43, 1.4042
942.03, 1.4008
942.62, 1.3991
943.22, 1.3965
943.81, 1.3938
944.41, 1.3914
944.95, 1.3886
945.54, 1.3871
946.14, 1.3841
946.74, 1.3806
947.33, 1.3802
947.93, 1.3771
948.52, 1.3729
949.12, 1.3699
949.72, 1.3690
950.31, 1.3663
950.91, 1.3636
951.5, 1.3594
952.1, 1.3585
952.7, 1.3550
953.29, 1.3541
953.89, 1.3521
954.48, 1.3485
955.08, 1.3442
955.68, 1.3434
956.27, 1.3405
956.87, 1.3360
957.46, 1.3340
958.06, 1.3312
958.66, 1.3292
959.25, 1.3272
959.85, 1.3237
960.44, 1.3209
961.04, 1.3186
961.64, 1.3168
962.23, 1.3136
962.83, 1.3086
963.42, 1.3081
964.02, 1.3041
964.62, 1.3016
965.21, 1.2993
965.81, 1.2973
966.4, 1.2947
967., 1.2914
967.6, 1.2885
968.19, 1.2870
968.79, 1.2830
969.38, 1.2800
969.98, 1.2758
970.58, 1.2737
971.17, 1.2708
971.77, 1.2686
972.36, 1.2659
972.96, 1.2629
973.56, 1.2603
974.15, 1.2591
974.75, 1.2565
975.34, 1.2526
975.94, 1.2484
976.54, 1.2467
977.13, 1.2431
977.73, 1.2400
978.32, 1.2383
978.92, 1.2347
979.52, 1.2309
980.11, 1.2289
980.71, 1.2247
981.3, 1.2224
981.9, 1.2213
982.5, 1.2168
983.09, 1.2140
983.69, 1.2114
984.28, 1.2077
984.88, 1.2046
985.48, 1.2025
986.07, 1.1999
986.67, 1.1971
987.26, 1.1940
987.86, 1.1926
988.46, 1.1887
989.05, 1.1844
989.65, 1.1835
990.24, 1.1780
990.84, 1.1747
991.37, 1.1719
991.97, 1.1698
992.56, 1.1675
993.16, 1.1647
993.75, 1.1617
994.35, 1.1574
994.94, 1.1554
995.54, 1.1517
996.14, 1.1494
996.73, 1.1468
997.33, 1.1432
997.92, 1.1399
998.52, 1.1374
999.12, 1.1348
999.71, 1.1308
1000.31, 1.1265
1000.9, 1.1232
1001.5, 1.1223
1002.1, 1.1194
1002.69, 1.1154
1003.29, 1.1127
1003.88, 1.1089
1004.48, 1.1071
1005.08, 1.1044
1005.67, 1.1014
1006.27, 1.0982
1006.86, 1.0959
1007.46, 1.0911
1008.05, 1.0890
1008.65, 1.0865
1009.25, 1.0808
1009.84, 1.0810
1010.44, 1.0775
1011.03, 1.0742
1011.63, 1.0710
1012.23, 1.0677
1012.82, 1.0654
1013.42, 1.0621
1014.01, 1.0575
1014.61, 1.0557
1015.21, 1.0524
1015.8, 1.0501
1016.4, 1.0471
1016.99, 1.0448
1017.59, 1.0410
1018.18, 1.0365
1018.78, 1.0335
1019.38, 1.0329
1019.97, 1.0288
1020.57, 1.0257
1021.16, 1.0229
1021.76, 1.0195
1022.36, 1.0181
1022.95, 1.0157
1023.55, 1.0129
1024.14, 1.0079
1024.74, 1.0054
1025.34, 1.0014
1025.93, 1.0006
1026.53, 0.9954
1027.12, 0.9934
1027.72, 0.9926
1028.32, 0.9883
1028.91, 0.9861
1029.51, 0.9836
1030.1, 0.9802
1030.7, 0.9761
1031.29, 0.9732
1031.89, 0.9712
1032.49, 0.9664
1033.08, 0.9649
1033.68, 0.9621
1034.27, 0.9599
1034.87, 0.9551
1035.47, 0.9539
1036.06, 0.9508
1036.66, 0.9477
1037.25, 0.9443
1037.78, 0.9420
1038.37, 0.9396
1038.97, 0.9375
1039.56, 0.9334
1040.16, 0.9292
1040.75, 0.9288
1041.35, 0.9246
1041.95, 0.9223
1042.54, 0.9198
1043.14, 0.9157
1043.73, 0.9135
1044.33, 0.9079
1044.92, 0.9072
1045.52, 0.9043
1046.12, 0.9015
1046.71, 0.8998
1047.31, 0.8963
1047.9, 0.8950
1048.5, 0.8924
1049.1, 0.8893
1049.69, 0.8866
1050.29, 0.8834
1050.88, 0.8811
1051.48, 0.8780
1052.07, 0.8758
1052.67, 0.8732
1053.27, 0.8733
1053.86, 0.8657
1054.46, 0.8646
1055.05, 0.8646
1055.65, 0.8610
1056.24, 0.8557
1056.84, 0.8554
1057.44, 0.8533
1058.03, 0.8508
1058.63, 0.8471
1059.22, 0.8459
1059.82, 0.8463
1060.42, 0.8444
1061.01, 0.8394
1061.61, 0.8349
1062.2, 0.8324
1062.8, 0.8330
1063.39, 0.8274
1063.99, 0.8255
1064.59, 0.8233
1065.18, 0.8221
1065.78, 0.8158
1066.37, 0.8155
1066.97, 0.8148
1067.57, 0.8116
1068.16, 0.8067
1068.76, 0.8069
1069.35, 0.8048
1069.95, 0.8006
1070.54, 0.7980
1071.14, 0.7968
1071.74, 0.7946
1072.33, 0.7942
1072.93, 0.7913
1073.52, 0.7857
1074.12, 0.7805
1074.71, 0.7848
1075.31, 0.7778
1075.91, 0.7770
1076.5, 0.7738
1077.1, 0.7731
1077.69, 0.7717
1078.29, 0.7714
1078.89, 0.7682
1079.48, 0.7666
1080.08, 0.7658
1080.67, 0.7627
1081.27, 0.7611
1081.86, 0.7574
1082.46, 0.7542
1083.06, 0.7568
1083.65, 0.7559
1084.25, 0.7537
1084.76, 0.7483
1085.36, 0.7499
1085.95, 0.7464
1086.55, 0.7490
1087.14, 0.7442
1087.74, 0.7450
1088.34, 0.7444
1088.93, 0.7416
1089.53, 0.7423
1090.12, 0.7393
1090.72, 0.7417
1091.31, 0.7417
1091.91, 0.7392
1092.51, 0.7396
1093.1, 0.7358
1093.7, 0.7348
1094.29, 0.7358
1094.89, 0.7343
1095.48, 0.7317
1096.08, 0.7294
1096.68, 0.7270
1097.27, 0.7284
1097.87, 0.7265
1098.46, 0.7250
1099.06, 0.7239
1099.65, 0.7272
1100.25, 0.7261
1100.84, 0.7261
1101.44, 0.7247
1102.04, 0.7272
1102.63, 0.7229
1103.23, 0.7226
1103.82, 0.7229