114 Memorandum on the Geological structure [No. 2. 



The Jamjora digging I have not seen. It is said to be entirely 

 new. It is manifestly a continuation of the Dhoba hill vein, or 

 more correctly speaking, part of the same system of veins. The ore. 

 is a very promising one. It is very friable, consisting it would seem 

 of a decomposed schist. It contains but little sulphur, which 

 enables the rude operators to smelt it directly, some specimens con- 

 tain a good deal of bismuth and iron. Those examined by me gave 

 an average of 22 per cent, of copper, sufficiently pure to be market- 

 able. 



I have been informed however that some specimens examined by 

 Dr. O'Shaughnessy gave as much as 43 per cent, of metal. 



An English gentleman endeavoured in 1852 to obtain a lease of 

 the mines both in Seraikela and Dholbhoom. He was not success- 

 ful. The Zemindars, on whom I had strongly urged the advantage 

 of employing European skill and capital, objected to me that the 

 " Sahib Logue" once admitted, soon become masters of their estates. 



The copper vein at Landoo as I have already remarked, appears 

 to belong to the same system as that at Jamjora, I have not examined 

 the ore, which appears to be more compact than that just mentioned, 

 and probably contains quite as much metal. The present working 

 is I believe new ; but I traced round the foot of Dhoba hill with 

 which it is connected the scoria of old furnaces for some miles, all 

 memory of the workers has perished. 



About three miles east of Kalkapore in Dholbhoom is a hill called 

 by the Hindoos Rangamittee, and by the Coles, Sontals and others 

 Sengil Booroo ; the Cole equivalent for "fire mountain." This hill 

 which consists of altered schists, rises about eight hundred feet 

 above the surrounding country, half way up are perpendicular cliffs 

 of foliated schists which contain copper, and I have ascertained the 

 presence of the metal in an ore of iron taken from the very top of 

 the hill. No mine has been attempted here. Oxide of copper is 

 scraped in small quantities from the surface of the rocks, where 

 water finds its way from above, and is sold in trifling quantities by 

 the natives. The only use to which it is applied, that I could hear 

 of, is for blackening the teeth of the ladies. 



At the base of the above cliffs is a fissure, the mouth of which is 

 only just big enough to admit a man's head. It is regarded with 



