952 
MANGANESE DEPOSITS OF INDIA : DESCRII'TIVK. [PaKT IV : 
The talus-ore deposits. 
To work this deposit economically it would probably be necessary to 
put in an aerial ropeway, or a gravity incline if the slope be not too steep, 
The workiii" of the ^0 bring the ore from the top of Guguldoho hill to its 
deposit. base, so as to save the cooUe labour that would other- 
wise be necessary to carry the ore down in baskets. Further, to get the 
ore to Tharsa station, Bengal-Nagpur Kailway, some 15 miles distant, it 
would probably be advantageous to connect this deposit by tramlines to 
the Miinegilon-Waregaon system, belonging to the Central India Mining 
Company. Otherwise bullock-cart transport would be required. Owing, 
however, to the character of the ore, this deposit could probably be 
worked at a profit only when prices were very favourable. At the time of 
my visit, when the price of manganese was 8J to 9 pence per tmit for 50 
per cent, ore, the place was deserted, and none of the ore that had 
been extracted had ever been removed. During 1906, however, a consi- 
derable amount of ore has been exported from this deposit. It is carted 
to a point on the tramway system of the Central India Mining Company 
about a mile south of Mandri and then railed to Tharsa station. 
Towards the east end of this band, at the foot of the spurs on which 
spessartite-quartz-rock was found cropping out, a 
little quarrying had been done on the talus deposits. 
One quarry showed, on its north side, a vertical depth of 10 feet of debris 
consisting of manganese-ore — some of good quality, but often spoilt by 
spessartite, quartz, etc. — and quartzite. This talus thinned rapidly, so 
that on the south side of the excavation it was only 2 feet thick. Some 
95 tons of ore had been extracted from this and another similar excava- 
tion some 130 yards further west. Sample No. 35 was taken from this 
ore, which consisted of the hard grey psilonielane-braunite mixture, one 
or two pieces containing a little rhodonite or quartz. The analysis 
made at the Imperial Institute is as follows : — 
Sample No. 33. 
Manganese peroxide ........ 48-75 
Manganese j)rotoxide ........ 2(\-55 
Ferric oxide . . . . . . . . . 12'24 
iSilica (combined) . . . . . . . .5-0] 
Silica ( free) . . . . . . . . . 1 • 38 
Phosphoric oxide . . . . . . . . 0'34 
Moisture at 100°C' 0-28 
This is equivalent to : — 
Manganese ......... 51 "43 
Iron 8-57 
Sihca 6-99 
Phosphorus O'lS 
Moisture f>-28 
and indicates that the ore contains about 56 per cent, braunite, most of 
the remainder being psilomelane. 
