268 KING: KADAPAH AND KARNUL FORMATIONS. [PART Iv. 
incompatible with the present desire among our countrymen of making 
money in the rapidest way possible. 
For people, however, who are content with a slowly paying trans- 
Favorable under cer. aCtion, who are willing to lead a hard life (for 
UE all Indian works must be personally looked after 
by some of the interested workers), and who have capital sufficient to 
last some years, diamond mining would pay in these districts. 
There are only the merest traces known of copper or copper work- 
ings; and these had been visited and reported on 
Copper. J 1 : 1 
long previous to the investigation of the Geolo- 
gical Survey. With the exception of one locality in the Nellore 
district, which is on the CRYSTALLINE rocks, these old workings are in 
beds of the KADAPAH rocks. 
In the Gooman Conda denuded valley on the northern flanks of 
Gl a, the Oondootla plateau,* there are remains of 
old copper mines and traces of copper among the 
quartz veins and trap, which here traverse the Tadapurtee slates. Mr. 
` Foote refers as follows to this locality :—“ The quartz veins occurring in 
the KADAPAH rocks of the Calwa hills, though small in size and length, 
are interesting because of their being slightly metalliferous. The 
largest and longest of them occurs running diagonally across the 
Gooman Conda valley. It is here and there of mottled appearance, owing 
to stains apparently due to slight films of chlorite or tale. It is trace- 
able for a length of nearly three miles along the centre of the valley, 
and has been worked by pits at various points in search of copper ore- 
At the western extremity, and immediately south of the hanging 
wall of quartzite at the west end of Gooman Conda, is an old pit, 
upwards of 20 feet deep, hewn into the solid rock, which is an aban- 
doned copper mine. The evidences of copper ore consist in fragments 
* Between Kurnool and Nundial. 
(268) ) 
