S5|. 
MANGANESE DEPOSITS OF INDIA : DESCRIPTIVE. [PaRT IV : 
1 took a sample from all the ore stacked here (November 1903). It 
■consisted mainly of the psilomelane-braunite mixture, but included a 
certain proportion of the spotted ore. The analysis carried out at 
the Imperial Institute showed : — 
Sample No. 2- 
Manganese peroxide . . . . . . . . . 60 "17 
Manganese iirotoxide 
Ferric oxide 
Silica (combined) 
Silica (free) 
Phosphoric oxide 
Moisture at 100°r. 
This is equivalent to : 
19-31 
7-95 
3-02 
I -45 
0-2S 
0-33 
Manganese 
Iron . 
Silica . 
Phosphorus 
Moisture 
53-05 
5-565 
4-47 
0-12 
0-33 
The amoimt of combined silica points to an average composition for 
these ores of 30% of braunite and 70% of psilomelane. 
Mr. W. H. Clark, Manager of the Central Provinces Prospecting Syndi- 
cate, has kindly supplied the following analyses, dated September 1905, 
bv Mr. R. D. Connell :— 
Tonnage represented . 
316 
419 
Manganese 
53 -24 
52-01 
Iron 
4-62 
5-16 
Silica 
5-00 
6-40 
Phosphorus 
0-09 
0-09 
The lower slopes of the southern side o± this hill are covered with 
^ ^ loose ore resulting from the mechanical disintegration 
a us ore eposi s. deposit. Such material is commonly 
called either ' boulder-ore' or ' float-ore ', but had better, as explained 
on page 876, be referred to either as ' talus-ore ' or ' detrital ore '. 
At the base of the hill som.e pits, .3 feet deep, showed talus-ore right to 
the bottom. The whole of the southern part of the hill is coloured on 
the map to represent manganese-ore, but the ore band itself is probably 
not wider than about .50 to 100 feet across the outcrop, the southern 
fringe representing talus-ore. 
The work here was of the usual description, the ore being extracted 
by crow-bars, broken up and cleaned with hammers, and stacked in the 
usual rectangular ore heaps 2-3 feet high. In 1907 the waste was being 
removed by means of trucks on a pair of rails carried on waste dumps, 
across the strike of the deposit at the west end and round to north side 
of the hill. 
