Yol. 68.] 



THE GOPEN& BEDS OF KINTA. 



149 



In some cases the clayey vein-material is stained yellow er- 

 red. This is the rule with small veins on the Kinta Tin- 

 Mines land. 



At Tekka a big kaolin-vein has been exposed cutting deep red 

 clays, while close by this vein I noted a vein of tourmaline and a 

 vein of kaolin intersecting one another. 



Pig. 4. — Section at the Tehha Mine, showing faulted 

 tourmaline and Jcaolin veins. 





'\M^ 





^^ 



\ 





''v^i^^irJ^^s^^ 



Toutmalino Ycms 



/*F 



1 



t' 



[Approximate scale : 1 inch = 6 feet.] 



The junction of the Gopeng Eeds with the granite is clearly 

 exposed at the Tekka Ltd. Mine and at a big Chinese mine farther 

 south. The clays are stained deep red for a long distance, and 

 are traversed by veins of tourmaline, the continuity of which 

 has generally been broken by slight movements in the mass of the 

 clays after their formation. Veins of kaolin also occur. 



At Pulai the junction with the granite can be seen, but there 

 the staining is not so strong and is, indeed, in some places entirely 

 absent. 



(6) Proof that the Gopeng Beds are of Earlier Age than 

 the Mesozoic Granite. 



Until a short time ago the Gopeng Beds were looked upon 

 by miners as recent alluvial deposits, the evidence of the kaolin 

 veins being unappreciated. They contain tin-ore throughout, but 



