Research Article

Sources and Effects of Fluids in Continental Retrograde Shear Zones: Insights from the Kuckaus Mylonite Zone, Namibia

Table 1

Compositional ranges for the biotite gneiss, Tsirub Gneiss, and the leucogranite.

Biotite gneissTsirub GneissLeucogranite

SiO261.98-71.5066.36-74.3870.52-79.80
TiO20.13-0.890.13-0.200.13-0.30
Al2O313.80-15-.2213.53-15.039.12-14.18
Fe2O31.73-7.791.31-4.151.22-2.56
MnO0.01-0.120.02-0.070.02-0.03
MgO0.34-3.180.25-1.110.13-0.45
CaO0.14-4.520.45-1.510.10-0.50
Na2O2.44-4.662.58-3.370.25-3.47
K2O3.14-6.514.29-6.194.61-6.79
P2O50.07-0.220.07-0.280.04-0.18
SO30.00-0.010.00-0.010.00-0.01
Cr2O30.00-0.030.00-0.020.00
NiO0.010.01-0.020.01
H2O-0.07-0.190.18-0.310.06-0.17
LOI0.73-1.380.62-1.790.66-1.40
Total98.90-99.4698.95-99.6798.89-99.56