CHAP. 9.] ECONOMIC RESOURCES. 269 
of quartz scattered through the rubble talus and covered with thin 
films of malachite. A small specimen of azurite was also found, 
and another showing a trace of purplish copper pyrites. In the pit 
the vein-stone has been entirely worked out, leaving vertical walls of the 
highly indurated slate rock which occurs so largely in the bottom of the 
valley. The villagers could not tell us when the mine had been last 
worked. 
* In the deep bay in the hills east of Somadulpilly (further west- 
south-west) are two small white quartz veins, running east-north-east, 
west-south-west. These are about a quarter of a mile apart. In the 
northern one traces of copper were also observed in the shape of specks of 
copper pyrites of yellow and, in one specimen, purple color, together with 
thin films of carbonate of copper, which also occurs in minute beautifully 
green acicular crystals in a few tiny cavities. This small vein, which 
hades or dips to the north at an angle of 85°, is from 44 to 5 feet thick, 
and well exposed in the bed of a small nullah. The beds of shale 
traversed by it have here a slight dip to the south.” 
The next locality of copper ore is on the eastern edge of the field 
North of Vinukonda mediately north of the Vinukonda dome. 
came, There are the remains of old workings here 
which were opened up 1n thick beds of very hard fine-grained whitish 
quartzite. All that is seen now are stains of green carbonate of copper, 
and the merest traces of the same mineral in the very thin strings of 
white quartz which are traversing the quartzite in all directions. 
Mr. Foote says of this locality :— 
>» In a bed of very coarse granular quartzite occurring close to the 
ruined village of Gantlapalem, at the north end of the Vellatur eroded 
dome-valley (Vinukonda dome), traces of copper occur in the form 
of malachite and azurite films on the surfaces of the joint planes. 
In former times extensive mining operations were carried on here, many 
large pits remaining.. This is the old Agingundala copper mine men- 
( 269 ) 
