82 
MANGANESE DEPOSITS OP INDIA : MINERALOGY. [ ParT J : 
specimen was analysed by Messrs. J. and H. S. Pattinson of Newcastle- 
on-Tyne. The fourth specimen was a piece of the radiate-concentric 
pyrolusite of Pah in the Nagpur district, referred to above. It was 
analysed at the Imperial Institute, London, where the specific gravity 
was found to be 4* 88, the piece used being of some 2 inches in diameter. 
The analyses are given below : — 
Table 8. 
Analyses of Indian pyrolusites. 
Bikonhalli, 
Shimoga. 
Ghatia, 
Banswara. 
1 
' Kodiir, 
Vizagapatam. 
Pali, 
Nagpur. 
932. 
K. 193. 
10-4-07 
A. 197. 
Mn02 
MnO 
Fe203 
AI2O3 
BaO 
CaO 
MgO 
K2O 
Na20 
Si02 
Sulphur 
P2O5 
AS2O5 
PoO 
NiO 
CuO 
1)0 
ZnO 
Combined water 
.Moisture at 1()0°C. . 
Carbon dioxide 
96-73 
0-57 
0-23 
0' 18 
0-66 
0-76 
0-42 
0-451 
97-04 
0-43 
0-03 
0*17 
0-07 
0-90 
0-47 
nil 
nil 
0"41 
0-35 
92-31 
1-82 
0-07 
0-27 
0-99 
0-31 
0-05 
0-31 
0-11 
0-502 
0-016 
0 -956 
0-009 
0 -10 
nil 
0 -005 
nil 
0-10 
2 -00 
0-25 
nil 
95-57 
0-41 
0- 06 
0'43 
1- 34 
0-00 
0-09 
trace 
0-13 
0332 
_ 
0-01 
0-012 
0 -0163 
:: 
1 •4(; 
0-12 
0-09 
100 -00 
99-87 
100-176 
100-068 
Manganese ... 
Iron ..... 
Pho phorus 
61 -57 
0-16 
01 -68 
0-02 
.59-78 
0-05 
0-42 
60-79 
0-04 
0-004 
Specific gravity 
4-94 
4-88 
1 d'ffcrcnec. 
2 All combined silica, 
y Mainiy cobalt oxide. 
