喜马拉雅夏如淡色花岗岩⁃伟晶岩的矿物学特征
程飞越, 谢磊, 陈小明

Mineralogical characteristics of the Xiaru leucogranite⁃pegmatite in the Himalayan oregen
Feiyue Cheng, Lei Xie, Xiaoming Chen
表2 夏如淡色花岗岩?伟晶岩中白云母化学成分
Table 2 Chemical compositions of micas from the Xiaru leucogranite?pegmatite
未矿化白云母花岗岩平均含钨白云母花岗岩平均含铌钽钨白云母花岗岩平均含铌钽伟晶岩平均
123n=1045n=7678n=149101112n=19
EPMA (wt.%)
SiO246.2646.0646.6445.8746.6445.4345.7745.2845.6746.6845.5845.2145.9346.0346.3645.70
TiO20.590.550.870.610.660.430.630.580.560.420.450.360.180.140.310.25
Al2O329.6830.4832.3730.3530.2031.5830.5933.6633.7632.3333.5335.2335.4135.8633.1934.62
FeO6.375.936.596.045.635.295.734.414.275.054.473.442.392.623.983.36
MnO0.190.260.260.210.140.180.170.110.140.140.120.090.070.190.100.11
MgO1.050.721.050.830.730.480.640.180.210.260.190.350.510.130.430.32
CaO0.02-0.050.020.01-0.01-0.01-0.00-0.050.020.010.02
Na2O0.180.190.400.250.400.290.290.320.420.340.370.320.200.150.290.32
K2O10.4510.3510.4810.3010.0310.4010.1910.3310.3210.1810.2810.5310.5310.4310.0210.25
F0.590.180.670.340.500.230.410.370.380.500.370.130.12-0.040.10
Cl0.00-0.010.000.01-0.000.000.000.000.00-0.000.000.000.00
H2O*4.114.294.404.224.164.294.194.264.284.224.264.424.444.514.444.41
O=F,Cl0.250.080.280.140.210.100.170.160.160.210.160.050.05-0.020.04
LA⁃ICP⁃MS (wt.%)
Li2O0.650.330.880.560.430.870.650.300.350.340.330.240.240.140.430.24
Rb2O0.290.330.390.320.370.370.350.280.280.360.300.280.270.430.220.30
Cs2O0.030.030.040.030.020.030.020.010.010.020.020.010.010.020.000.02
Total100.2099.62100.2099.7499.7199.7699.4699.94100.51100.64100.12100.56100.30100.6799.8099.98
以22个O原子计算
Si6.3146.3086.4056.2786.3596.1926.2676.1276.1396.2806.1556.0526.1216.1206.2376.138
Al iv1.6861.6921.8931.7221.6411.8081.7331.8731.8611.7201.8451.9481.8791.8801.7631.862
Al vi3.0883.2283.3273.1693.2123.2653.2043.4953.4883.4073.4923.6123.6833.7413.5003.618
Ti0.0600.0570.0900.0630.0680.0440.0650.0590.0570.0420.0460.0360.0180.0140.0310.025
Fe0.7270.6790.7560.6910.6410.6030.6570.4990.4800.5690.5050.3850.2660.2910.4480.378
Mn0.0220.0300.0300.0250.0170.0210.0190.0130.0160.0160.0140.0110.0080.0220.0110.013
Mg0.2140.1460.2140.1700.1490.0980.1300.0370.0410.0530.0380.0710.1020.0260.0860.063
Li0.3580.1820.4830.3080.2350.4750.3590.1650.1880.1870.1770.1300.1270.0750.2340.129
Ca0.0040.0070.0030.0010.0010.0010.0010.0070.0020.0010.003
Na0.0480.0510.1060.0670.1060.0760.0770.0840.1090.0890.0960.0840.0510.0390.0750.084
K1.8181.8071.8391.7991.7441.8071.7801.7821.7701.7471.7701.7981.7911.7691.7201.756
Rb0.0250.0290.0340.0280.0320.0320.0310.0250.0240.0310.0260.0240.0230.0360.0190.026
Cs0.0020.0020.0020.0020.0010.0020.0010.0010.0010.0010.0010.0010.0010.0010.0000.001
F0.2550.0780.2910.1480.2170.0970.1760.1590.1630.2130.1580.0540.0500.0170.044
Cl0.0010.0030.0010.0030.0010.0000.0000.0010.0010.0000.0000.0000.001
OH*3.7443.9224.0003.8523.7803.9033.8233.8413.8373.7863.8413.9463.9504.0003.9833.955
LA⁃ICP⁃MS (×10-6)
Be34394735222324392735322632462631
B717218910012516812214413910416698170348124174
Sc614761494943501141071311169663113157
V232125201414152.02.31.92.04.10.400.99185.5
Cr41251107.55113--1.42.51.5-2.32.72.3
Co2.63.43.52.92.83.02.60.32-1.31.01.60.63--0.62
Ni2.10.932.81.62.32.61.4-0.66-0.220.630.67--0.20
Cu-1.12.10.660.680.480.450.380.720.050.481.1-0.15-1.2
Zn901091159711411310477787278124166275135143
Ga1029811694104101107150147167157151135212187167
Ge2.13.76.34.13.62.63.22.84.46.85.16.44.93.33.95.3
Sr1.11.62.21.41.32.21.40.680.700.790.680.740.820.140.870.93
123n=1045n=7678n=149101112n=19
Zr0.491.21.20.840.771.00.900.910.930.680.800.940.671.40.150.68
Nb1962093412332473142983433542953299017324517168
Mo-0.080.260.09--0.040.10-1.60.28----0.11
Ag0.13-0.530.150.030.100.180.03--0.020.10-0.570.120.11
Cd-0.370.670.200.07-0.140.100.090.100.030.09-0.370.200.06
In1.21.41.61.11.21.11.42.02.02.31.81.71.60.671.21.3
Sn23525428921421021823723325332024423620485259200
Sb0.15-0.600.26-0.060.10---0.08-0.210.32-0.09
Ba786696786561496.13.40.914.85.17.23.42.17.4
Hf0.040.080.130.080.060.130.090.140.120.150.120.130.150.17-0.15
Ta27339141396970485337501938191.141
W233231276183143222221181209136183100138181690
Au0.110.260.440.210.220.400.340.290.330.140.250.030.220.180.020.21
Tl8.61113101111118.28.38.48.37.68.0157.09.6
Pb3.33.54.43.01.52.12.53.43.33.33.14.03.14.26.14.4
Th0.00-0.040.010.040.030.010.00-0.010.01---0.000.15
U-0.010.030.010.030.010.010.01-0.010.010.010.02-0.010.24