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4 夏如淡色花岗岩?伟晶岩中代表性石榴子石的主量(wt.%)和微量成分(×10-6)分析结果
Table 4 Major (wt.%) and trace (×10-6) elements of representative garnets from the Xiaru leucogranite?pegmatite
未矿化白云母花岗岩含铌钽钨白云母花岗岩含铌钽伟晶岩
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EPMA (wt.%)
SiO236.1236.3635.8435.8935.6635.8336.6437.1236.5936.3236.3136.37
TiO20.000.020.140.130.180.150.070.110.110.060.140.12
Al2O321.2521.2421.1421.1421.3321.2321.2720.4421.5521.3621.0821.10
FeO22.2722.5424.5824.8422.5919.0222.7021.5216.9115.6412.439.53
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MnO16.8217.0516.2516.0118.4921.0717.7920.5523.2324.9528.9331.86
MgO0.100.120.080.130.090.080.050.040.040.03--
CaO2.492.321.331.581.311.631.540.991.491.531.231.00
Total99.0599.6599.3699.7299.6599.01100.06100.7999.9299.89100.1299.98
锰铝榴石39.439.738.337.743.849.741.146.853.758.167.374.0
铁铝榴石52.853.057.457.152.045.254.250.241.837.329.123.0
钙铝榴石7.57.04.04.73.94.94.72.94.64.63.63.0
镁铝榴石0.40.50.30.50.40.30.20.20.20.10.00.0
Mn/(Mn+Fe)0.430.430.400.390.450.520.440.490.580.610.700.77
LA⁃ICP⁃MS (×10-6)
Li17222130418837434423632835736913577
Be-0.140.11-0.340.67-0.150.370.12--
B8.07.3113.211134.3128.7141915
Sc53511161191661506148142403822
V5.97.80.960.751.30.220.360.641.61.20.11-
Cr5074.9-2.0-1.40.98-2.32.5-2.1
Co2.42.31.51.81.61.30.720.630.390.71-0.18
Ni-0.260.320.110.100.21-0.380.230.13-0.52
Cu0.51--0.010.650.06-3.2-3.41.40.18
Zn121055565247639197879781
Ga151632233838374240523737
Ge506262556257648370896343
Rb0.72160.210.270.500.28-0.430.250.140.07-
Sr0.280.470.130.250.360.200.010.060.190.160.01-
Y18012161292016783916361223263224361843931109556
Zr0.490.273.31.87.78.56.58.214252822
Nb0.041.50.420.489.4151.57.64.4215269
Mo2.11.41.91.71.22.02.01.63.02.63.12.6
Ag--0.20--0.170.150.340.200.060.340.02
Cd1.72.35.04.75.65.55.35.96.27.1109.1
In0.030.050.130.050.240.170.380.340.310.560.250.36
Sn2.21.5179.242507975621293834
Sb-1.70.070.08-0.08-0.400.10---
Cs1.41.40.020.87-0.040.03---0.000.00
Ba0.060.33----------
Hf0.070.120.320.190.600.940.600.820.952.21.91.7
Ta0.110.550.960.393.54.52.2113.3241415
W0.59140.460.360.730.380.060.130.360.400.240.38
Au----0.030.02-0.04-0.110.060.05
Tl0.100.160.000.010.00-----0.01-
Bi-0.200.000.02--0.00--0.02-0.01
Pb0.09-0.070.05--0.06-0.00-0.050.03
Th0.020.060.03-------0.020.00
U0.020.120.070.060.220.330.090.210.260.941.82.0
La0.090.01----0.01----0.01
Ce0.270.01-0.020.030.040.030.020.040.040.070.13
Pr0.040.00-0.010.030.030.030.010.060.070.070.11
Nd0.410.040.190.060.690.990.710.721.11.21.52.4
Sm0.660.604.32.39.1108.48.213161521
Eu0.100.060.050.010.090.070.070.050.060.010.040.05
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Gd7.37.0442275847094851198574
Tb5.67.230164346385447703422
Dy122157355197495492344464482638213110
Ho5982865412611160771041112211
Er3424773022164743681611993182893919
Tm94132584810272303459525.42.8
Yb97013914794699756162182664874003319
Lu148251637014281243261462.71.9
LREE1.60.724.52.410.0119.39.014171624
HREE174825041417109324331871947122016441726434260
ΣREE174925051422109524431882956122916581743451284
δEu0.140.080.010.010.010.010.660.711.330.893.664.51
k(HREE)0.310.340.130.180.150.110.040.030.090.04-0.11-0.12