Phlogopite, Kimberely Mine, S. Africa, Kb5-2 of Lang Farmer (UCLA)
~0.030 mm thin section, corrected, polarized pale color 22-Jan-79
 1890.70,  -0.04253
 1886.40,  -0.03725
 1881.30,  -0.03688
 1878.40,  -0.03645
 1873.30,  -0.03657
 1863.10,  -0.03532
 1849.30,  -0.03367
 1836.20,  -0.03199
 1802.90,  -0.03130
 1807.80,  -0.02870
 1802.00,  -0.02834
 1798.40,  -0.02763
 1786.80,  -0.02709
 1779.50,  -0.02820
 1763.50,  -0.02869
 1752.60,  -0.02910
 1743.20,  -0.02979
 1738.10,  -0.03028
 1731.60,  -0.03075
 1720.00,  -0.03064
 1706.20,  -0.02935
 1698.90,  -0.02955
 1694.60,  -0.02932
 1685.20,  -0.02924
 1679.40,  -0.02901
 1673.60,  -0.02926
 1665.60,  -0.02970
 1656.20,  -0.02941
 1648.20,  -0.02993
 1627.90,  -0.02940
 1622.10,  -0.02946
 1616.30,  -0.03024
 1608.40,  -0.03043
 1604.00,  -0.03078
 1591.10,  -0.02948
 1586.50,  -0.02910
 1579.50,  -0.02826
 1563.30,  -0.02626
 1550.10,  -0.02410
 1520.90,  -0.02347
 1513.30,  -0.02436
 1505.60,  -0.02476
 1499.50,  -0.02547
 1494.50,  -0.02557
 1486.50,  -0.02583
 1479.30,  -0.02684
 1475.00,  -0.02700
 1462.00,  -0.02682
 1447.40,  -0.02630
 1435.10,  -0.02472
 1412.40,  -0.02181
 1400.10,  -0.02060
 1392.10,  -0.02105
 1385.70,  -0.02119
 1376.90,  -0.02025
 1371.10,  -0.01960
 1363.80,  -0.01867
 1359.40,  -0.01758
 1335.50,  -0.01636
 1323.90,  -0.01692
 1300.70,  -0.01792
 1327.30,  -0.01181
 1288.30,  -0.01644
 1272.30,  -0.01487
 1267.20,  -0.01390
 1263.60,  -0.01366
 1257.80,  -0.01321
 1246.90,  -0.01305
 1241.80,  -0.01259
 1205.30,  -0.00694
 1190.90,  -0.00687
 1168.30,  -0.00592
 1159.60,  -0.00495
 1153.80,  -0.00446
 1129.90,  -0.00432
 1111.70,  -0.00406
 1103.70,  -0.00459
 1096.40,  -0.00490
 1078.50,  -0.00463
 1056.80,  -0.00549
 1050.90,  -0.00608
 1036.70,  -0.00694
 1033.00,  -0.00712
 1022.60,  -0.00762
 1014.30,  -0.00753
 1009.10,  -0.00744
  993.30,  -0.00678
  978.30,  -0.00643
  972.30,  -0.00520
  949.70,  -0.00199
  942.90,  -0.00149
  933.90,  -0.00125
  924.80,   0.00093
  916.60,   0.00238
  910.50,   0.00285
  902.30,   0.00316
  896.30,   0.00379
  891.00,   0.00434
  885.00,   0.00533
  876.60,   0.00824
  866.10,   0.00761
  863.80,   0.00835
  858.60,   0.00929
  847.20,   0.01287
  841.90,   0.01436
  838.20,   0.01513
  835.10,   0.01603
  832.10,   0.01652
  817.80,   0.01853
  807.30,   0.02025
  802.00,   0.02141
  796.70,   0.02245
  793.00,   0.02313
  789.20,   0.02429
  784.70,   0.02453
  781.00,   0.02442
  775.80,   0.02476
  771.30,   0.02465
  760.80,   0.02551
  756.30,   0.02608
  752.50,   0.02674
  748.80,   0.02743
  742.80,   0.02900
  738.30,   0.02977
  733.80,   0.03104
  729.20,   0.03301
  725.40,   0.03478
  720.10,   0.03624
  717.10,   0.03783
  714.00,   0.03897
  709.50,   0.04037
  704.90,   0.04184
  699.50,   0.04428
  696.40,   0.04552
  692.50,   0.04781
  689.30,   0.05031
  685.30,   0.05258
  680.50,   0.05707
  674.20,   0.06110
  671.80,   0.06360
  668.70,   0.06538
  666.30,   0.06654
  664.70,   0.06784
  663.10,   0.07010
  661.40,   0.07217
  660.60,   0.07283
  657.40,   0.07592
  655.80,   0.07716
  654.20,   0.07893
  653.30,   0.08053
  650.90,   0.08253
  648.50,   0.08414
  643.70,   0.08833
  641.30,   0.09082
  639.60,   0.09258
  638.00,   0.09487
  634.70,   0.09835
  630.70,   0.10140
  628.30,   0.10328
  625.90,   0.10522
  623.40,   0.10869
  619.30,   0.11478
  616.80,   0.11752
  611.90,   0.12439
  607.00,   0.13173
  603.70,   0.13557
  601.30,   0.13886
  599.60,   0.14087
  594.90,   0.14599
  592.50,   0.14888
  590.10,   0.15227
  587.70,   0.15467
  586.00,   0.15818
  584.40,   0.15920
  583.60,   0.16096
  581.20,   0.16333
  578.80,   0.16597
  577.20,   0.16888
  575.50,   0.17061
  573.90,   0.17234
  573.10,   0.17394
  572.30,   0.17456
  571.50,   0.17621
  570.70,   0.17686
  569.10,   0.17865
  567.50,   0.17945
  565.10,   0.18140
  563.60,   0.18224
  562.80,   0.18339
  560.40,   0.18535
  558.80,   0.18713
  556.40,   0.18877
  555.60,   0.19031
  554.00,   0.19091
  552.40,   0.19300
  551.60,   0.19355
  550.70,   0.19540
  549.90,   0.19634
  549.10,   0.19734
  548.30,   0.19846
  546.60,   0.20165
  545.70,   0.20322
  544.10,   0.20492
  542.60,   0.20563
  541.00,   0.20663
  540.10,   0.20848
  538.60,   0.20904
  537.00,   0.21008
  533.80,   0.21221
  530.70,   0.21405
  529.90,   0.21459
  527.50,   0.21625
  525.90,   0.21790
  522.80,   0.21941
  520.40,   0.21973
  518.80,   0.22238
  517.20,   0.22405
  513.20,   0.22720
  512.40,   0.22814
  510.00,   0.22953
  509.20,   0.23053
  508.40,   0.23154
  507.60,   0.23254
  506.80,   0.23304
  506.80,   0.23304
  506.00,   0.23355
  504.50,   0.23365
  501.40,   0.23447
  499.90,   0.23449
  497.50,   0.23563
  495.10,   0.23560
  492.80,   0.23603
  491.20,   0.23691
  488.80,   0.23630
  488.00,   0.23685
  487.20,   0.23756
  485.60,   0.23849
  484.00,   0.23905
  482.40,   0.24034
  481.60,   0.24180
  480.80,   0.24223
  479.20,   0.24260
  478.30,   0.24448
  477.40,   0.24686
  476.50,   0.24824
  474.70,   0.25415
  473.80,   0.25621
  472.90,   0.25816
  472.80,   0.26008
  471.90,   0.26146
  471.10,   0.26371
  470.20,   0.26594
  470.00,   0.26887
  469.10,   0.27110
  468.10,   0.27628
  467.20,   0.27834
  467.10,   0.28127
  466.20,   0.28333
  466.00,   0.28721
  465.10,   0.28928
  464.90,   0.29267
  463.10,   0.29720
  461.20,   0.30316
  461.00,   0.30756
  460.10,   0.31068
  459.10,   0.31473
  458.90,   0.31812
  458.10,   0.31977
  457.90,   0.32217
  457.80,   0.32461
  456.10,   0.32800
  455.00,   0.33468
  454.00,   0.33762
  453.10,   0.34000
  452.20,   0.34343
  451.20,   0.34755
  451.00,   0.35096
  450.00,   0.35458
  449.10,   0.35671
  448.30,   0.35832
  448.10,   0.36121
  447.30,   0.36281
  445.50,   0.36695
  444.50,   0.36940
  444.40,   0.37231
  443.50,   0.37468
  442.60,   0.37547
  441.70,   0.37787
  440.80,   0.37853
  439.90,   0.38168
  439.00,   0.38254
  436.40,   0.38719
  435.50,   0.38907
  434.60,   0.39145
  434.40,   0.39430
  431.90,   0.39568
  430.20,   0.39700
  429.30,   0.39789
  428.40,   0.39964
  426.80,   0.40047
  426.60,   0.40318
  424.90,   0.40411
  424.00,   0.40651
  423.00,   0.40826
  421.20,   0.40922
  420.20,   0.41022
  420.10,   0.41289
  418.40,   0.41329
  418.30,   0.41574
  418.10,   0.41865
  418.00,   0.42109
  417.80,   0.42351
  417.70,   0.42645
  417.40,   0.43181
  417.20,   0.43522
  416.20,   0.43934
  416.00,   0.44373
  415.10,   0.44536
  414.10,   0.44952
  413.10,   0.45364
  412.00,   0.45856
  411.90,   0.46140
  411.00,   0.46126
  410.80,   0.46448
  409.70,   0.46895
  408.70,   0.47056
  406.80,   0.47414
  406.60,   0.47818
  406.40,   0.48215
  406.10,   0.48637
  405.80,   0.49058
  405.60,   0.49526
  404.60,   0.49735
  403.70,   0.49912
  403.40,   0.50432
  402.30,   0.50906
  400.90,   0.51855
  399.90,   0.52048
  399.00,   0.52124
  398.20,   0.52166
  398.00,   0.52487
  397.10,   0.52750
  396.80,   0.53196
  395.90,   0.53331
  394.90,   0.53433
  394.80,   0.53761
  394.30,   0.54450
  394.20,   0.54772
  394.00,   0.55020
  393.80,   0.55318
  393.60,   0.55661
  393.50,   0.55931
  393.30,   0.56221
  393.20,   0.56391
  392.90,   0.56750
  392.80,   0.56918
  392.70,   0.57085
  386.60,   0.56759
  385.50,   0.56929
  385.40,   0.57140
  386.00,   0.57712
  385.80,   0.57935
  385.60,   0.58208
  383.50,   0.58676
  383.10,   0.59271
  382.20,   0.59134
  382.90,   0.59533
  382.50,   0.60135
  382.30,   0.60511
  382.10,   0.60738
  382.00,   0.60950
  381.90,   0.61113
  381.80,   0.61326
  380.80,   0.61402
  380.50,   0.61870
  380.30,   0.62182
  380.20,   0.62387
  380.00,   0.62537
  378.70,   0.63012
  378.50,   0.63384
  378.10,   0.63873
  377.90,   0.64143
  377.80,   0.64277
  377.50,   0.64730
  377.30,   0.65065
  376.20,   0.64920
  376.00,   0.65438
  374.80,   0.66060
  374.60,   0.66456
  374.30,   0.67002
  375.40,   0.67849
  374.50,   0.68194
  374.20,   0.68690
  374.00,   0.69137
  373.80,   0.69434
  373.50,   0.69980
  373.30,   0.70377
  372.80,   0.71319
  371.90,   0.71665
  371.60,   0.72260
  371.30,   0.72756
  371.00,   0.73401
  371.40,   0.73998
  372.00,   0.74397
  371.70,   0.74942
  371.40,   0.75438
  371.20,   0.75835
  370.30,   0.76181
  370.20,   0.76379
  370.00,   0.76776
  369.80,   0.77123
  369.60,   0.77371
  369.50,   0.77718
  369.30,   0.78066
  369.00,   0.78512
  368.80,   0.78909
  368.60,   0.79405
  368.30,   0.79851
  367.80,   0.80844
  367.60,   0.81290
  367.30,   0.81736
  367.10,   0.82133
  366.90,   0.82629
  366.70,   0.83026
  366.50,   0.83423
  365.60,   0.83719
  365.00,   0.84711
  364.90,   0.84909
  365.40,   0.85457
  365.30,   0.85705
  365.10,   0.86102
  364.70,   0.86747
  364.40,   0.87391
  364.10,   0.87937
  363.90,   0.88383
  362.80,   0.88977
  363.00,   0.89921
  362.80,   0.90368
  362.40,   0.91211
  361.00,   0.92350
  360.00,   0.92844
  359.60,   0.93638
  359.30,   0.94085
  359.70,   0.94880
  359.50,   0.95277
  358.50,   0.95722
  359.10,   0.95971
  359.00,   0.96219
  358.70,   0.96715
  358.20,   0.97707
  357.90,   0.98352
  357.50,   0.98997
  357.20,   0.99592
  356.80,   1.00287
  357.30,   1.00834
  357.00,   1.01330
  356.70,   1.01926
  356.40,   1.02471
  356.20,   1.02967
  355.30,   1.04604
  355.10,   1.05100
  354.80,   1.05596
  354.60,   1.05993
  354.40,   1.06291
  354.20,   1.06688
  354.00,   1.07035
  353.80,   1.07481
  352.80,   1.08025
  352.60,   1.08323
  352.40,   1.08670
  352.30,   1.08968
  351.90,   1.09662
  351.70,   1.10010
  351.50,   1.10456
  351.30,   1.10754
  351.10,   1.11200
  350.90,   1.11498
  350.60,   1.12093
  351.20,   1.12442
  350.30,   1.12787
  349.90,   1.13531
  349.60,   1.14077
  349.50,   1.14276
  349.30,   1.14573
  349.80,   1.15021
  350.50,   1.15122