910 
MANGANESE DEPOSITS OF INDIA : DESCRIPTIVE. [ParT tV : 
The analyses do not show as nmch difference as might liave been 
expected m\d indicate that a considerable i)roi)ortion of spessartite can 
be present without very seriously afl'ectijig the quality of the ore. 
These analyses indicate an average composition of 45 to 48% braunite., 
most of the remainder being psilomelane (see page 908). 
As will be seen from the sketch-plan of this deposit, the ' country ' 
on either side of the ore-body is covered by detrital or talus-ore, cf which 
^ ^ a fair quantity should be obtained in opening 
up the ore-body. In the south-east corner of the 
pit the following section was seen : — 
1 fed talus-oic wiih very abundant tiny ;)i"olitie giaiiul<'s of niang;mese-orc ; 
this passed down into : — 
;j feet pisolitic gravel of manganese-ore, 
1 foot pisolites of manganese-ore in a matrix of ferruginous ehvy, 
2 feet deeomposed mica-schist t onta'ning pisolitic concretions of manganese 
oxide, witli some quartzite pi'bbles pbove. 
The question arises as to whether these pisolitic grains, averaging 
about J inch in diameter, are of concretionary or detrital origin. I broke 
a large number of them and found that they consisted of the various 
sorts of ore found- in the quarry and sometimes even contained spessar- 
tite. Hence they can hardly be of other than detrital oiigin. T^ut the 
pisolites in the mica-schist must of course be of secondary, concretionary 
origin. 
The overburden in the north-east coriier of the quarry consists of 
alluvial clay passing dov\n into talus. In this cla}/ are inany fragments 
and jjebbleS; amongst v^'hich are some well-rounded pebbles of white 
quartz up to (J inches aTid more in diameter. 
The methods of working at the time of my visit in 1904 \vere of the 
The working of tlio usual crude kind. The ore was quarried and carried 
out of the quarry by hand, cleaned, and stacked ; 
and the waste material run in trucks along tram-lines to the new dump- 
heap shown in the sketch plan (Plate 37). The lines were so laid that 
the trucks descended by gravity to this dump-heaj) and had to be 
pushed back to the quarry by hand. The old dump-heaps and the huts 
were put in the position shown, partly because it was not at first 
realized what was the size and strike of the deposit, and j)artly because 
by the time these factors were ascertained a rival firm had obtained a 
prospecting license over the ground situated round the sm?ll area origin- 
ally secured by the Central Provinces Prosj^ecting Syndicate oii mining 
lease. Now* that this prospecting license has expired the Central 
Provinces Prospecting Syndicate are removing the old dump-heaps ; for 
