A alluviab 



CD 

 W 



a 



I— '- 

 O 



P 



r Mowbray River 



Cmorifo Slates- 



Diridin^ Range; 

 Rifle- Ck. 



Spear Ck 



Sl/ite- Range, 

 JDjrfce, 



GO 



States with Quartz, Reefs 



o 



1 



o 



p 



& 



OCb 

 CA 



SA 





MitckdLIwrer 

 Schists 



&rcuute. 



Gneiss & Schists 





» ui&^it *.x Granite- 



Slates with, 

 Quart Reefs 



t&lfykes 



Jfodgkinson, Birer 



