Table 3.

Electron microprobe wavelength-dispersive spectrometry results for feldspar and hornblende analyses

∑ analysesAverage feldsparAverage hornblende
Borve PeninsulaObasaraighEavalBorve PeninsulaObasaraighEaval
33333333
Weight %
SiO261.2163.5659.3567.9442.6143.5144.5143.33
TiO20.010.010.010.010.891.130.411.74
Al2O324.2618.5025.3819.9311.4112.2512.3610.93
Cr2O30.000.000.000.000.000.000.000.00
FeOtot0.030.020.010.0817.8615.7210.5015.69
MnO0.010.010.010.010.440.440.190.32
MgO0.000.000.000.019.4710.4614.2210.95
CaO5.540.156.900.3011.5811.4112.0611.71
BaO0.000.000.000.000.000.000.000.00
Na2O8.550.487.7111.651.091.191.251.20
K2O0.1216.210.080.081.430.831.311.48
SrO0.080.110.140.050.000.000.000.00
NiO0.000.000.000.000.000.010.040.01
Cl0.110.140.060.10
F0.120.060.250.19
∑ weight %99.8099.0699.59100.0597.0197.1597.1597.64
a.f.u. 
Si2.722.972.662.976.436.436.466.46
Ti0.000.000.000.000.100.130.040.20
Al1.271.021.341.03
Aliv0.460.570.580.38
Alvi1.571.571.541.54
Cr0.000.000.000.000.000.000.000.00
Fe3+0.000.010.010.000.570.630.530.41
Fe2+0.00−0.01−0.010.001.681.310.751.54
Mn0.000.000.000.000.060.050.020.04
Mg0.000.000.000.002.132.313.082.43
Ca0.260.010.330.011.871.811.881.87
Ba0.000.000.000.000.000.000.000.00
Na0.740.040.670.990.320.340.350.35
K0.010.960.000.000.280.160.240.28
Sr0.000.000.000.000.000.000.000.00
Ni0.000.000.000.000.000.000.000.00
Cl0.030.030.020.03
F0.060.030.120.09
OH1.921.941.871.89
∑ cations5.005.005.005.0013.0013.0013.0013.00

Hornblende calculated using ∑13eCNK method. Feldspars recalculated with all Fe as Fe3+.