Grid Ref (WGS84 Lat/Long in decimal degrees)
The Hurungwe Gneiss,ZMB13/8B, collected on the Karoi-Chirundu road is a biotite garnet granitic gneiss, containing quartz, K-feldspar, plagioclase, biotite, garnet. Biotite schlieren 2-4 mm wide help to define a gneissic foliation in the rock. The zircons have yielded ages of 2020.7 ± 6.6 Ma, which is regarded as the age of the intrusion (Master et al., 2015). No inherited zircons were found in this sample.
Stop 1 on attached field guide