16 



W. G. Langford : 



No. 13 is the rock selected for separation by heavy liquid. 

 Microscopically the following minerals were identified : — Quartz, 

 muscovite, tourmaline, oligoclase, altered plagioclase, magnetite, 

 zircon, rutile, biotite, and secondary sericite and limonite. 



No. 15 is a banded grey and yellow shale showing muscovite along 

 tlie liedding planes. Under the microscope the section shows quartz, 



CEOLOCICAL MAP of KEW -- 



o i /m//e. 



