Cordierite, GRR 338, Mt. Tsilaizina, Madagascar #1/6/76 R.T. 0.935 mm, alpha, corrected 2604.10, 0.16840 2598.40, 0.16180 2594.00, 0.15720 2587.80, 0.15260 2582.20, 0.14850 2575.60, 0.14420 2569.30, 0.14290 2563.80, 0.14260 2558.70, 0.14320 2553.10, 0.14600 2544.80, 0.15170 2538.70, 0.15870 2535.20, 0.16490 2530.70, 0.17300 2525.40, 0.18280 2522.50, 0.18950 2517.90, 0.19360 2514.60, 0.19380 2511.50, 0.19030 2508.80, 0.18360 2504.90, 0.17030 2499.00, 0.14520 2491.80, 0.11810 2487.60, 0.10260 2484.20, 0.09180 2479.20, 0.08170 2475.00, 0.07310 2469.40, 0.06140 2465.40, 0.05430 2462.50, 0.05080 2458.70, 0.04900 2454.50, 0.04640 2449.40, 0.04170 2442.60, 0.03720 2436.50, 0.03320 2431.10, 0.03060 2425.50, 0.03070 2419.90, 0.02930 2416.00, 0.02440 2410.30, 0.02120 2403.00, 0.01830 2395.90, 0.01960 2389.20, 0.01730 2379.90, 0.01910 2371.30, 0.01950 2360.90, 0.02150 2353.40, 0.02490 2347.60, 0.02720 2341.30, 0.02880 2327.00, 0.03390 2314.70, 0.03970 2303.30, 0.04920 2297.70, 0.05650 2288.40, 0.06530 2283.10, 0.06900 2278.50, 0.07200 2273.80, 0.07450 2268.30, 0.07470 2258.70, 0.07570 2252.90, 0.07860 2248.40, 0.08210 2241.00, 0.08140 2230.80, 0.08020 2218.50, 0.07840 2206.70, 0.07610 2196.50, 0.07280 2184.50, 0.06990 2180.40, 0.07070 2170.20, 0.07310 2161.90, 0.06940 2154.80, 0.06310 2149.40, 0.05630 2142.10, 0.05310 2137.70, 0.05580 2117.80, 0.04740 2108.70, 0.04510 2097.40, 0.04210 2084.60, 0.03850 2071.40, 0.03230 2057.90, 0.02820 2039.50, 0.02550 2022.50, 0.02340 2006.10, 0.02010 1991.50, 0.01600 1975.50, 0.01530 1961.70, 0.01430 1952.40, 0.01360 1945.20, 0.01360 1937.50, 0.01570 1933.80, 0.01980 1931.30, 0.02550 1929.60, 0.02700 1927.00, 0.02710 1925.30, 0.02900 1922.10, 0.03220 1918.70, 0.03990 1916.30, 0.04920 1914.40, 0.05820 1912.70, 0.07290 1910.80, 0.09470 1909.60, 0.12100 1908.60, 0.15560 1907.30, 0.19390 1906.60, 0.24650 1905.10, 0.37260 1904.50, 0.48930 1903.90, 0.62460 1903.00, 0.82150 1902.60, 0.96200 1901.20, 1.18060 1901.20, 1.29020 1901.00, 1.40230 1900.70, 1.59390 1900.70, 1.77850 1900.10, 1.91600 1899.80, 1.98530 1898.90, 2.01710 1898.80, 1.98230 1898.60, 1.91210 1898.40, 1.64980 1897.50, 1.36570 1896.40, 1.14770 1896.10, 0.86340 1895.40, 0.71620 1894.70, 0.56650 1894.00, 0.42360 1892.50, 0.30360 1890.20, 0.19320 1888.70, 0.14450 1886.40, 0.09540 1883.40, 0.06560 1879.70, 0.04330 1872.60, 0.02790 1866.30, 0.01950 1856.80, 0.01270 1849.00, 0.01180 1837.60, 0.00910 1828.30, 0.00810 1820.30, 0.00770 1811.30, 0.00830 1803.70, 0.00970 1798.00, 0.01270 1794.40, 0.01410 1788.60, 0.01410 1782.40, 0.01000 1777.10, 0.00910 1768.80, 0.00440 1759.70, 0.00310 1749.10, 0.00140 1737.90, 0.00000 1721.30, 0.00050 1702.10, 0.00200 1626.90, 0.00530 1605.90, 0.00600 1582.20, 0.00720 1554.60, 0.01040 1533.30, 0.01300 1511.60, 0.01760 1495.40, 0.02190 1482.10, 0.02750 1476.10, 0.03190 1473.80, 0.03640 1472.20, 0.04190 1471.00, 0.05250 1470.00, 0.07030 1468.90, 0.08380 1468.40, 0.09210 1467.10, 0.09390 1466.60, 0.08950 1465.80, 0.08030 1464.70, 0.06540 1463.60, 0.05240 1462.10, 0.04520 1459.50, 0.03990 1456.10, 0.03730 1452.10, 0.03810 1447.60, 0.03870 1441.30, 0.04190 1437.70, 0.04390 1431.80, 0.04910 1428.50, 0.05260 1426.60, 0.05710 1424.90, 0.06140 1422.20, 0.06650 1420.00, 0.07130 1417.70, 0.07460 1415.70, 0.08030 1414.40, 0.08710 1412.90, 0.09590 1411.40, 0.10940 1409.80, 0.12350 1409.00, 0.15510 1408.00, 0.18570 1407.30, 0.22910 1406.80, 0.27080 1406.50, 0.31240 1406.40, 0.36250 1406.10, 0.42030 1405.70, 0.47140 1405.20, 0.52900 1405.10, 0.54770 1404.40, 0.59420 1404.00, 0.61910 1403.90, 0.63160 1403.60, 0.61860 1403.10, 0.58370 1402.50, 0.50320 1401.80, 0.40300 1401.30, 0.34340 1400.50, 0.27080 1399.30, 0.21320 1397.60, 0.15250 1395.00, 0.11720 1392.90, 0.10010 1391.50, 0.09580 1389.90, 0.09240 1388.50, 0.09030 1386.60, 0.08880 1384.30, 0.08920 1382.40, 0.08940 1379.70, 0.08930 1377.40, 0.08830 1375.70, 0.08770 1373.60, 0.08870 1372.40, 0.08990 1370.10, 0.09150 1367.20, 0.09280 1362.20, 0.09630 1356.40, 0.10140 1352.60, 0.10540 1347.40, 0.11080 1340.70, 0.11780 1332.50, 0.12810 1315.50, 0.15080 1308.10, 0.16230 1297.50, 0.17700 1286.90, 0.19450 1278.00, 0.20850 1245.50, 0.25690 1228.00, 0.28080 1220.60, 0.29080 1210.80, 0.30170 1201.10, 0.31000 1190.90, 0.31600 1183.40, 0.31930 1176.00, 0.32120 1168.20, 0.32290 1163.20, 0.32370 1158.50, 0.32450 1155.50, 0.32720 1154.60, 0.33090 1153.40, 0.33760 1152.40, 0.34530 1152.10, 0.35380 1151.20, 0.36250 1150.70, 0.36620 1149.70, 0.36000 1148.60, 0.35090 1148.30, 0.34280 1146.70, 0.33180 1145.60, 0.32690 1143.60, 0.32320 1138.90, 0.31960 1133.60, 0.31770 1127.80, 0.31510 1119.20, 0.31130 1109.00, 0.30720 1100.80, 0.30420 1092.20, 0.30090 1084.20, 0.29860 1075.20, 0.29740 1067.80, 0.29730 1058.10, 0.29780 1049.90, 0.30010 1041.20, 0.30230 1034.00, 0.30460 1027.60, 0.30720 1021.20, 0.31060 1014.50, 0.31360 1008.30, 0.31670 1000.70, 0.31790 993.10, 0.31850 986.60, 0.31860 981.50, 0.31800 977.30, 0.31610 973.40, 0.31430 969.30, 0.31190 966.30, 0.31020 963.70, 0.31020 961.90, 0.31160 960.70, 0.31430 959.80, 0.31680 959.20, 0.31640 958.40, 0.31300 957.90, 0.31050 956.90, 0.30530 955.30, 0.30000 953.50, 0.29530 951.10, 0.29240 948.20, 0.28730 943.80, 0.28040 939.90, 0.27400 934.40, 0.26620 928.90, 0.25690 920.20, 0.24020 912.30, 0.22210 904.00, 0.20580 895.50, 0.18820 885.60, 0.16720 876.50, 0.15190 866.10, 0.13500 856.60, 0.11860 842.70, 0.09990 828.50, 0.08410 812.80, 0.07200 796.40, 0.06110 785.00, 0.05660 773.10, 0.05310 763.00, 0.04980 753.60, 0.04790 745.00, 0.04730 736.60, 0.04770 728.80, 0.04730 722.90, 0.04640 715.90, 0.04670 710.30, 0.04630 702.50, 0.04640 695.50, 0.04720 688.20, 0.04880 679.00, 0.05050 670.60, 0.05150 663.30, 0.05280 657.60, 0.05350 651.00, 0.05460 644.30, 0.05620 638.20, 0.05670 630.90, 0.05760 623.50, 0.05900 617.40, 0.05990 613.80, 0.06050 610.00, 0.06160 605.90, 0.06320 602.20, 0.06490 598.80, 0.06660 594.60, 0.06770 590.20, 0.06860 584.00, 0.07000 578.70, 0.07110 574.10, 0.07160 569.30, 0.07090 561.50, 0.07060 555.10, 0.07020 548.80, 0.07030 543.20, 0.07050 536.50, 0.07120 529.60, 0.07180 518.90, 0.07310 511.10, 0.07360 499.80, 0.07480 492.50, 0.07640 486.80, 0.07740 478.00, 0.07750 473.40, 0.07770 467.70, 0.07810 463.60, 0.07870 461.00, 0.08010 458.40, 0.08150 455.40, 0.08120 452.40, 0.08110 448.50, 0.08130 444.10, 0.08260 441.30, 0.08360 439.00, 0.08390 434.40, 0.08300 430.80, 0.08220 427.60, 0.08310 423.70, 0.08320 419.20, 0.08270 414.00, 0.08250 410.20, 0.08260 405.70, 0.08440 402.20, 0.08660 399.70, 0.08870 396.50, 0.09230 395.30, 0.09390 393.10, 0.09840 391.80, 0.10110 390.50, 0.10160 388.50, 0.10090 386.40, 0.10000 384.00, 0.09910 382.30, 0.09860 379.80, 0.09790 378.20, 0.10020 377.50, 0.10210 376.60, 0.10400 375.90, 0.10500 374.40, 0.10460 373.30, 0.10390 372.40, 0.10470 371.70, 0.10620 370.60, 0.10780 368.90, 0.10990 365.20, 0.11450 362.00, 0.11820