656 
MANGANESE DEPOSITS OF INDIA : DESCRIPTIVE. [PaRT IV : 
Sivarajpur. 
Brief notices will now be given of the more interesting occurrences of 
Description of de- manganese-ores as seen before they were opened 
posits. up. 
At the point marked A on the sketch-map, there was, on the north side 
of the top of the ridge, quite a large mass of psilome- 
lane forming a cliff 17 feet high and 36 feet measured 
in a downward-sloping direction along the strike, whichis W. by N. This 
mass of ore seemed to be at least a yard thick, and possibly much more ; 
wherever chipped it was found to consist of a beautiful compact metaUic 
grey psilomelane, containing minute braunite specks. This was the finest 
mass of ore of presumed superficial origin that I had then seen 
anywhere ; and the only deposits of this origin I have since seen that 
surpass it in size are Kumsi and those of the Sandur Hills. 
A picked specimen of ore from here of specific gravity 4'25 was 
analysed by Messrs. J. & H. S. Pattinson with the following result : — 
Specimen No. A. 607. 
Manganese peroxide 
Manganese protoxide 
Ferric oxide 
Alumina 
Baryta 
Lime . 
Magnesia 
Potash . 
Soda . 
Combined silica 
Free silica 
Suly)hur 
Fhdsplnji-ic iixid 
Arscnii' iixiik' 
Cobaltous oxide 
Nickelous oxide 
Cupric oxide 
Lead oxide . 
Zinn oxide 
Titanic oxide 
Chlorine 
Fluorine 
Combined water 
Moisture at 100°C. 
Carbonic oxide 
60-30 
17-13 
600 
119 
0- 79 
1- 3-2 
0-94 
2- 27 
0-23 
4-20 
2-70 
0-021 
0-366 
Nil. 
Nil. 
Nil. 
0-02 
Nil 
0-05 
0-04 
Nil. 
Nil. 
2-00 
0-60 
A'(7. 
100-167 
Manganese . 51-40 
Iron 4-20 
Silica (total) 6-90 
Phosphorus . . . . . . . . 01 60 
SpeciSSc gravity 4-25 
