The Magnificent Aravalli

The general character of the Aravalli 
is its primitive formation  granite, reposing in variety of angle ,
the general dip is to the east on massive, compact, dark blue 
slate, the latter rarely appearing much above the surface or base 
of the superincumbent granite. The internal valleys abound in 
variegated quartz and a variety of schistous slate of every hue, 
which gives a most singular appearance to the roofs of the houses 
and temples when the sun shines upon them.In the diverging 
ridges west of Ajmer the summits are quite dazzling with the 
enormous masses of vitreous rose-coloured quartz. 

The Aravalli and its subordinate hills are rich in both mineral 
and metallic products alone can be attributed the resources which enabled      to struggle against power, and to raise 
those magnificent structures.

The mines their produce a monopoly, increasing 
the revenue, commercial duties, mines....
The tin-mines of Mewar were once very productive, and yielded, 
it is asserted, no inconsiderable portion of silver : but the caste 
of miners is extinct, and political reasons, during the Mogul 
domination, led to the concealment of such sources of wealth. 
Copper of a very fine description is likewise abundant, and supplies 
the currency ; and the chief of Salumbar even coins by sufferance 
from the mines on his own estate... Surma

 Oldest of all the physical features which intersect the continent is 
the range of mountains known as the Aravallis, which strilies across the 
Peninsula from north-east to south-west, overlooking the sandy wastes of 
Rajasthan. The Aravallis are but the depressed and degraded relics of a 
far more prominent mountain system, which stood, in Palaeozoic times, on 
the edge of the Rajasthan. The disintegrated rocks which once formed 
part of the Aravallis are now spread out in wide red-stone plains to the 
east
 The garnet, amethystine 
quartz, rock crystal, the chrysolite,Zinc , Silver and inferior kinds of the 
emerald family are all to be found within Mewar .