Chap. XXX.] pancii matials : sivarajpore. 
659 
A sample taken both from the loose fragments occurring on the N. W. 
slopes of the hill and from the outcrop was partially analysed by Messrs. 
J. and H. S. Pattinson with the following result : — 
Sample No, 
Manganese peroxide 
Manganese protoxide 
Ferric oxide . 
Baryta 
Silica (combined) 
Silica (free) . 
Phosphoric oxide 
Water (combined). 
Moisture at 100° C. 
This is equivalent to : — 
A.45. 
Manganese 
Iron 
Silica (total) 
Phosphorus 
G4-10 
1018 
10-26 
3- 84 
2-45 
4- 75 
0-.362 
2-00 
0-35 
48-41 
3-60 
7-20 
0-158 
On following the strike of the rocks of tho hill C in an E. S. E. direction, 
manganese -ore fragments are seen right down the slope ; and then, on 
rising again up the small valley occupying the angle where the main range 
bends from S. S. W. to west, several large outcrops of impure manganese- 
ores are to be found. 
Pyrolusite is not as a rule as plentiful in these hills as psilomelane ; 
but at the point D there is an outcrop of pyrolusite about 7 paces wide and 
10 paces long on the strike (E. 35° S.). An outcrop sample taken here, 
and containing a little psilomelane in addition to the pyrolusite, yielded 
on analysis : — 
Sample No. A. 44. 
56-80 
3- 61 
4- 85 
1-25 
Manganese peroxide 
Manganese protoxide 
Ferric oxide . 
Baryta 
Silica (combined) 
Silica (free) . 
Phosphoric oxide 
Water (combined). 
Moisture at 100° C. 
MO 
24-70 
0- 512 
1- 90 
0-30 
This indicates the presence of nearly 25 per cent, of residual, quartz 
and is equivalent to : — 
Manganese ...... 
Iron ... .... 
Silica (total) 
Phosphorus ....... 
IV 
38-77 
3-40 
25-80 
0-223 
