$>art 2.J Racket: Arvali Series in North-Eastern Rajpuiana. 
91 
The following is a list of the localities in whieh copper ore has been worked or traces 
of it observed :— 
Dari bo. 
In the ridge to the west. 
Indawas. 
Bhangarh. 
Tasing. 
Kushalgarh. 
Baghani. 
Pertabgarh. 
North of Nitahar. 
Near Garb in the Lalsot hills. 
Lalsot. 
N abaro. 
The most important of these is Daribo in the Alwar territory. The mine is situate on 
a sharp anticlinal bend, in a thin band of black slates intercalated in the Alwar quartzites. 
Formerly the workings consisted of some small pits on the hill-side. Dr. Impey, then 
Political Agent at Alwar, had a long adit level driven into the hill to drain these pits. The 
level runs in a southerly direction parallel to the strike of the rocks. I could see no trace of a 
lode; the ore appeal’s to be irregularly disseminated through the black slates, a few specks 
and stains only being seen in the quartzites. Where richer nests of ore were met with, the 
miners have extended their workings a short distance above or below the level. They state 
that a rich nest of ore occurs in a pit sunk below the level near its southern extremity, but 
that it had to be abandoned on account of the water. 
The eopper occurs in the form of pyrites mixed with arsenical iron. Small quantities 
of carbonate of copper were observed in the mine, probably the result of the decomposition 
of the sulphuret. The mine is now nearly abandoned, and but little ore is to be seen ; I 
had some difficulty in finding a piece the size of a hazel-nut. I found traces of copper in some 
black slates on the same geological horizon in the ridge a short distance west of Daribo. 
Near Indawas there is a long open cutting from 20 to 30 feet deep, from which copper 
ore has been extracted, but the workings are now filled with water. About a mile from these 
workings I found some miners engaged in sinking a small pit in the Kushalgarh 
limestone, from which they got a little ore. The Bhangarh workings consist of two or three 
small pits now fallen together. I found traces of copper in the Mandan schists near Tasing. 
The workings at Kushalgarh, Baghani, and Pertabgarh have been abandoned for many 
years. The natives say that at the two latter places the workings were very extensive, and 
that the mines fell together suddenly, burying a large number of men. The workings near 
Nitahar, at Garh, Lalsot and Nabaro are very small, and have long since been abandoned. 
A few years ago a small deposit of silver-lead oro was discovered in the Kushalgarh 
limestone near Gudha, and a pit was sunk in it; but after working for a short time it 
was found that the ore died out in every direction. The pit has now fallen together. 
Rutile (titanic acid) exists in small quantities in some little quartz veins in the Motidongri 
ridge a short distance south of Alwar. 
Iron ore occurs in large quantities at two places near the base of the Arvali series, 
one near Bhangarh and the other near Rajgarh. They supply 
Iron and Manganese. the ore to a largo number of furnaces in the State. Judging 
from the workings, an immense quantity of iron must have been produced from these 
mines. These excavations are several hundred yards long and, in places, 20 to 30 wide. They 
appear to be at an angle to the strike of the beds; but the rocks are so disturbed, and the 
junctions covered by debris, that I was not able to determine the point. The following 
is an analysis of the ore from Bhangarh: A mixture of limonite and magnetite and 
oxide of manganese, containing 59'67 per cent, of iron, and 12'7 of manganese. Large 
quantities of a superior iron ore have been raised from the Gwalior rocks in the ridge 
near Hindun. 
