758 MANGANESE DEPOSITS OF INDIA : DESCRIPTIVE. [PaRT IV : 
At the time of my first visit the only work that had been done at this 
The tahis oic depos- locality was on the talus deposits on the northern 
its. slopes of Bhilmjisur Hill, near and at its base. 
These showed a thickness of 3 to 6 feet of talus-ore resting on a debris 
of white quartzite fragments. On the level this talus consists mostly 
of a small gravel of manganese-ore with scattered larger pieces, which 
higher up increase in abundance and size, so that in some places some 
very large blocks are found in these deposits. There are also a few frag- 
ments of quartzite mixed with the ore detritus. The ore is of the hard 
grey braunite-psilomelane mixture, often spoilt by the presence of thin 
quartz films and remains of yellow spessartite. Some 5,500 tons of 
ore were stacked here. The ore in these stacks was as a rule extremely 
well cleaned and a sample taken from them was analysed at the Imperial 
Institute with the following result : — 
Sample No. 41. 
Manganese peroxide . . . . . . . 56'41 
Manganese protoxide . . . . . . . 23"32 
Ferric oxids ......... 9'43 
Silica (combined) ........ 3 '05 
Silica (free) 0-5.5 
Phosphoric oxido . . . . . . . .0-38 
MoisUue at 100°C ()-20 
This is equivalent to : — 
Manganese 53-78 
Iron . . . . . . . . . .6-60 
Silica 3-60 
Phosphorus 0-17 
Moisture 0-20 
and shows that the average ore consists of about 30% braunite and 70% 
psilomelane. The ore is evidently high in manganese, and low in silica, 
but somewhat too high in phosphorus. 
Mr. W. H. Clark has kindly supplied me with the following analyses 
of Chikhla ores :— 
Date 
13th 
Nov. 03 
13th 
Nov. 03 
6th 
Apl. 05 
6th 
Oct. 06 
6th 
Oct. C6 
6th 
Oct. 06 
6th 
Oct. 06 
6th 6th 
Oct. 06 Oct. 06 
Tonnage repre- 
sented 
A fair 
quantity 
A fair 
quantity 
1,085 
428 
3.000 
2,000 
300 
1 
440 210 
Analyst 
C. Fawcitt 
S. A. 
Jones 
R. D. Connell 
Manganese 
Iron 
Silica 
Phosphorus 
51-04 51 -04 
10-02 1 9-69 
8-10 ! JO-05 
0-193 i 0-205 
1 
50-Ul 
7-26 
6-86 
0-101 
50-32 i 48-84 
7-32 ! 8-70 
9-10 ' 7-15 
0-119 0-095 
50-56 
6-96 
8-15 
0-083 
52-28 
6- 78 
7- 85 
0-076 
51 -63 
7- 56 
8- 80 
0-086 
50-52 
7-2i 
7-40 
0-068 
