1080 
MANGANESE DEPOSITS OF INDIA : DESCRIPTIVE. [ PaRT I V 
The combined silica is in this case due, not to braunite, but to garnet, 
kaolin, etc. 
The ores seen in the mine are often cherty and limonitic. 
The following figures supplied by Mr. Caplen show the quaUty of the 
ores quarried by the Vizianagram Mining Co. at Perapi : — 
Range of analysis. 
Average analysis 
at present day. 
Ferruginous 
manganese-ore. 
Manganese . 
40 to 47 
41-63 
36 17 
Iron 
7 to 13 
11-52 
15-69 
Silica 
3 to 6 
4-30 
5-40 
Phosphorus . 
0-20 to 0-30 
0-286 
0-204 
Insohible 
6-50 
8-20 
The annual output from this deposit from 1900 to 1907 is shown 
below : — 
Output. 
Year. 
1900 
1901 , 
1902 
1903 
1904 
1905 
1906 
1907 
Long tons. 
3,800 
3,100 
4,563 
1,779 
Nil 
4,715 
19,226 
9,160 
For the years 1906 and 1907 the following amounts included in the 
above have been ferruginous manganese-ores (manganiferous iron- 
ores) : — 
Long tons. 
1906 17,818 
1907 8,466 
8. Itakeplapilli. 
Beyond the fact that the Vizianagram Mining Co. have located and 
worked a httle manganese-ore somewhere within the limits of this 
village about 2 miles south of Perapi, I have no information about this 
deposit. 
