APPENDIX 1: Raman spectroscopy data for two siegenite grains as well as the average. 

100	929.40933
103.10345	927.009335
106.20689	939.43912
109.31035	910.424165
112.4138	911.733425
115.51724	906.21246
118.62069	895.53125
121.72414	933.624665
124.82758	942.09778
127.93104	944.3078
131.03448	957.696135
134.13792	980.46254
137.24138	1008.3478
140.34483	1026.96135
143.44827	1136.7544
146.55173	1136.0784
149.65517	1006.207935
152.75862	962.596375
155.86208	912.53302
158.96552	878.190765
162.06897	856.110075
165.17241	851.678375
168.27586	852.14029
171.3793	833.156615
174.48276	830.68396
177.58621	831.424805
180.68965	823.98169
183.79311	812.218995
186.89655	803.24826
190	811.265715
193.10345	815.09128
196.20689	801.5025
199.31035	803.43622
202.41379	827.7742
205.51724	836.109405
208.6207	852.31912
211.72414	891.790865
214.82759	960.169855
217.93103	1019.654315
221.03448	1122.1086
224.13792	1208.4859
227.24138	1282.75655
230.34483	1328.51905
233.44827	1256.7043
236.55173	1163.5289
239.65517	1071.31805
242.75862	1034.30585
245.86208	974.101805
248.96552	959.988525
252.06897	948.946165
255.17241	928.19678
258.27585	955.88608
261.3793	974.411135
264.48276	980.427885
267.58621	1048.1032
270.68967	1077.5779
273.79309	1139.7959
276.89655	1188.17445
280	1275.8148
283.10345	1402.8371
286.20691	1567.5033
289.31033	1776.87405
292.41379	1943.97535
295.51724	2079.847
298.6207	2159.94015
301.72415	2118.75905
304.82758	1947.22175
307.93103	1765.6627
311.03448	1572.01565
314.13794	1399.2121
317.24139	1269.30095
320.34482	1205.27595
323.44827	1149.67365
326.55173	1103.59205
329.65518	1099.7186
332.75861	1089.073
335.86206	1098.5649
338.96552	1117.74845
342.06897	1162.44505
345.17242	1211.23065
348.27585	1217.34685
351.3793	1273.8214
354.48276	1218.0476
357.58621	1197.6569
360.68967	1141.5778
363.79309	1089.3886
366.89655	1096.4331
370	1152.1596
373.10345	1210.40985
376.20691	1302.4067
379.31033	1431.1225
382.41379	1510.49275
385.51724	1544.92335
388.6207	1513.756
391.72415	1393.92285
394.82758	1242.0725
397.93103	1048.035305
401.03448	890.175875
404.13794	792.47766
407.24139	718.59021
410.34482	684.80167
413.44827	662.333255
416.55173	649.072145
419.65518	639.683105
422.75861	631.92923
425.86206	620.90811
428.96552	613.677335
432.06897	611.60843
435.17242	611.21216
438.27585	623.185545
441.3793	624.10129
444.48276	620.75244
447.58621	615.41263
450.68967	613.7753
453.79309	602.756375
456.89655	600.70804
460	615.894715
463.10345	613.53
466.20691	611.53998
469.31033	602.333495
472.41379	594.544495
475.51724	605.941375
478.6207	600.5795
481.72415	599.2247
484.82758	598.246885
487.93103	599.998805
491.03448	597.511625
494.13794	592.21777
497.24139	596.8988
500.34482	580.9086
503.44827	576.269595
506.55173	583.7388
509.65518	574.52112
512.75861	567.943665
515.86206	567.722415
518.96552	565.340425
522.06897	565.65524
525.17242	556.12082
528.27588	553.98373
531.37933	561.06375
534.48279	556.400085
537.58618	553.620665
540.68964	546.27237
543.79309	539.65906
546.89655	535.99469
550	530.73416
553.10345	532.404025
556.20691	535.755555
559.31036	539.145905
562.41382	543.928375
565.51721	538.78891
568.62067	531.613005
571.72412	518.040465
574.82758	518.189515
577.93103	523.666805
581.03448	529.341125
584.13794	534.62796
587.24139	528.111055
590.34485	520.156955
593.4483	517.993225
596.5517	515.31064
599.65515	522.749145
602.75861	516.647855
605.86206	499.98138
608.96552	517.432385
612.06897	520.129455
615.17242	516.282745
618.27588	527.03595
621.37933	507.1409
624.48279	507.74719
627.58618	513.99411
630.68964	514.04564
633.79309	516.08708
636.89655	524.28235
640	517.56519
643.10345	506.184385
646.20691	510.02853
649.31036	516.03267
652.41382	518.058685
655.51721	520.11659
658.62067	516.959535
661.72412	517.413605
664.82758	525.81299
667.93103	524.13193
671.03448	529.947695
674.13794	527.810945
677.24139	528.735595
680.34485	526.306215
683.4483	526.591035
686.5517	525.62314
689.65515	520.59114
692.75861	538.60498
695.86206	524.093505
698.96552	539.894075
702.06897	527.3515
705.17242	537.217345
708.27588	544.594605
711.37933	531.601685
714.48279	531.65012
717.58618	536.197055
720.68964	532.599335
723.79309	525.05551
726.89655	529.30191
730	528.651305
733.10345	543.322205
736.20691	544.45773
739.31036	538.847505
742.41382	535.2529
745.51721	527.062405
748.62067	526.602635
751.72412	535.19598
754.82758	538.977295
757.93103	553.174195
761.03448	542.533295
764.13794	535.213685
767.24139	543.988345
770.34485	553.597745
773.4483	548.11014
776.5517	545.523285
779.65515	554.48349
782.75861	570.826385
785.86206	576.196685
788.96552	580.59781
792.06897	576.48755
795.17242	574.84918
798.27588	580.59195
801.37933	566.526305
804.48279	569.290255
807.58618	581.214355
810.68964	581.812685
813.79309	584.56894
816.89655	588.610655
820	580.382875
823.10345	579.792785
826.20691	590.173465
829.31036	588.79462
832.41382	573.15039
835.51721	560.315705
838.62067	563.405185
841.72412	562.658695
844.82758	552.03757
847.93103	558.390045
851.03448	548.10083
854.13794	547.40237
857.24139	535.881285
860.34485	532.934205
863.4483	536.655155
866.5517	530.910585
869.65515	521.411105
872.75861	531.09766
875.86206	523.650605
878.96552	520.04013
882.06897	516.067395
885.17242	519.290985
888.27588	531.90918
891.37933	514.03244
894.48279	514.970035
897.58618	538.12582
900.68964	539.101075
903.79309	528.052425
906.89655	534.786285
910	532.990725
913.10345	539.78421
916.20691	534.58945
919.31036	525.93088
922.41382	524.571655
925.51721	523.08865
928.62067	524.6044
931.72412	535.667235
934.82758	527.91617
937.93103	518.29953
941.03448	502.16017
944.13794	507.65558
947.24139	505.77252
950.34485	506.13591
953.4483	509.640215
956.5517	505.963015
959.65515	499.19194
962.75861	477.07147
965.86206	496.213165
968.96552	493.47699
972.06897	493.64029
975.17242	483.31166
978.27588	484.131865
981.37933	496.358705
984.48279	484.21783
987.58618	482.86642
990.68964	466.79968
993.79309	462.901885
996.89655	467.228835
1000	468.61969