1006 
MANGANESE DEPOSITS OF INDIA : DESCRIPTIVE. [ PaRT IV : 
that during two days' wanderings on the deposits round Kamataru, I 
saw no other rocks than manganese-ores, iron ores, and laterite. After 
discussing the origin of these deposits I shall show, however, that, 
although the quantities of manganese-ores in these hills are very 
large, yet they are not nearly so large as seems at first sight to be 
the case. 
From the outcrops one would imagine that the manganese-ore 
Manganese-ore deposits deposits are of the nature of beds ; for they 
apparently I.eds, but really sometimes show fairly distinct signs of bedding, 
sui ace replacement. . which is conformable with the bedding of the 
other rocks in these hills. Until some of the Riimandrug deposits had 
been opened up, it was not possible to say that this was not the truth. 
The work carried out by Mr. Ahlers in developing these deposits has 
shown that they are of superficial character, and probably do not extend 
to greater depths than 50 to 100 feet below the original ou tcrops. The 
best example is at Rjimandrug Main Bed. The section across the 
deposit is probably somewhat as in figure 76. At the top is a capping 
of several feet of laterite, which occupies the surface of the plateau at 
this point. A little below the top the outcrop of manganese-ore begins 
and had been extensively quarried into at the time of my visit. 
w.s.w. 
0 10 20 30 40 EO PEET 
scale:-i 1 1 1 1 ' 
Fig. 76.— Section across Ramandrug Main Bed deposit. 
From the working faces in this quarry one would judge the deposit 
to be a true bed of manganese-ore dipping into the hill-side at an 
