ECONOMIC GEOLOGY. 1 73 



here and there with copper. From the size of the depression formed 

 by the falling in of this mine, the vein must have been followed and 

 worked to a considerable depth, but no record or even tradition of the 

 working of the mine remains, 



On Captain Sherwill's geological map of Bengal, 1 copper is marked 

 in a position which should be near Fagwa. Mr. P. N. Bose 

 reports that there are some old diggings near this village ; at one 

 place a vein in quartzite, parallel to the strike, seemed to have 

 been worked for a distance of about 50 yards. Mr. Bose, however, 

 reports that he saw no trace of copper in the rocks and can 

 give no indication of the object of these workings. Captain 

 Sherwill's note on his map, which is a mere skeleton one, more 

 probably refers to the copper working near Cherka, unless indeed it 

 was founded on a baseless rumour 



On the same map copper is marked south of Bardi, but nothing 

 was seen or heard of any copper workings in this neighbourhood. 



Galena occurs in small quantities in the limestones of the Rohtas 



stage, but does not seem to have ever been worked. 

 Lead. 



The quantity, in all the cases where any has been 



seen, is far too small for this, as it only occurs in minute strings and 



isolated crystals. 



An old lead mine near the village of Urgarhi, in the gneiss 



area, was prospected in 1892-93 by Mr. R. A. D. Sewell, and 



a vein of galena and quartz some 9 inches thick was found at a 



depth of 30 feet from the surface. The galena on assay yielded 



6r6 per cent, of lead and 7 oz. [6 dwt. 14 gr. silver to the ton of 



lead. 2 



1 Geological map of the Northern Front of the Vindhya Hills, extending from Allahabad 

 to Rajamahal, showing the position of all the known Coal Beds of that tract, and also of the 

 Silver, Copper, Lead and Antimony localities as well as the Principal Iron Measures. Sur- 

 veyed and constructed by Captain Walter S. Sherwill, 66th Regiment, Native Infantry, Revenue 

 Surveyor, in 1842 to 1851. 



2 The specimens referred to in Dr. Ball's Volume of the Manual of the Geology of India 

 (Vol. Ill, Economic Geology, p. 248) as coming from " near the village of Burgowa, io miles 

 south of Burdi pargana." The mine is five miles north-west of Bargawa, the head-quarters of 

 one of the principal Thakurs of this part, and is in the southern part of the Bardi pargana. 



( *73 ) 



