G84 
Manganese deposits of india : descriptive. [Part IV 
part of the deposit, and were subjected to complete analysis by Messrs 
J. and H. S. Pattinson : — 
Sample 
Sample 
No. A. 40. 
No. A. 41. 
Manganese peroxide ....... 
38 • 15 
41 -80 
Manganese protoxide ...... 
31 -46 
28-17 
Ferric oxide ........ 
14 -86 
13-50 
Ahunina ......... 
0-47 
1 -34 
Baryta ......... 
I "77 
0-79 
Lime ......... 
I -56 
1-89 
Magnesia. ........ 
0-72 
0-36 
Potash . • • • ■ • • ' . 
0-12 
0-13 
Soda ......... 
0-18 
0-24 
Silica (combined) ....... 
7-90 
7-50 
Silica (free) ........ 
0 -50 
1 10 
Sulphur ......... 
0 -060 
0-034 
Phosphoric oxide ....... 
0-552 
0-()23 
Arsenic oxide ........ 
0-214 
0-305 
Cobaltous oxide ....... 
Nil. 
Nil. 
Nickelous oxide ....... 
Nil. 
Nil. 
Cupric oxide ........ 
0-15 
0-05 
Lead oxide ........ 
0-01 
0-02 
Zinc oxide ........ 
Nil. 
Nil. 
Titanic oxide ........ 
0-12 
0-14 
Chlorine ......... 
Trace 
Trace 
Fluorine ......... 
Nil. 
Nil. 
Water (combined) ....... 
1 10 
1 -80 
Moisture at 100° C 
0-20 
0-45 
Carbon dioxido ....... 
Nil. 
Nil. 
100-096 
100-242 
These are equivalent to : — 
Manganese 
1 
48-49 
48-25 
10-40 
9-45 
Sihca (total) ........ 
8-40 i 
8-60 
Phosj)horus ........ 
0-241 
0-272 
These analyses indicate the presence in the samples of 79% an(J 75%, 
respectively, of bra unite, with most of the balance consisting of 
psilomelane. 
It will be seen from these analyses that the ore is rather high in 
phosphorus, but it is, I imderstand, sent to Luxemburg for use in manu- 
facturing pig-iron from sulphurous iron-ores. Another interesting 
feature of the manganese-ores as revealed by the analyses is the high 
percentage of baryta (BaO), namely 1 to 4 per cent., averaging about 
2 J. This is due, as explained below (page 686), to the manganates 
