98 



The Philippine Journal of Science 



1913 



tween sedimentary and igneous rock. The vein matter is chiefly 

 clear, white quartz carrying free gold. One vein in Major 

 Creek was found containing beautifully crystalline wire gold. 



Fig. 3. — Veins on the Kelly group, north slope. 



The east and west veins south of the Kelly group are very 

 wide, and can be traced for several hundred meters on the sur- 

 face. They are generally low in gold value, and carry varying 

 amounts of iron pyrites and copper. 



Bued River. — In this section the veins are characterized by 

 high values in copper, sufficient in some cases to warrant their 

 being classed as copper veins. In the zone of enrichment, gold 

 values as high as 90 pesos (45 dollars United States currency) 

 per ton have been found. The principal veins are the Copper 

 King, Gray Horse, Union Jack, and Confederate. One vein 

 carrying calcite and manganese was found in the Copper King 

 group. 



Evidence as already given points to the fact that two or more 

 periods of Assuring had taken place; one period when quartz 



