756 MANGANESE DEPOSITS OF INDIA : DESCRIPTIVE. [PaRT IV : 
on the northern slopes of a range of low hills composed of quartzites 
and gneisses, and a hill (near the east end) some 500 feet high. The 
strike is usually about E. 5° — 10° S, except at the two ends, where 
it is rather variable. The dip is as a rule very steep to the south side 
or even vertical. At its widest point (on Bhamilsur Hill) the ore-band 
is 80 feet across (measured horizontally). At two places it is separated 
into two bands, in one place (down the eastern descent from Bhamasur 
Hill) by mica-sohists, and in the other (towards the eastern end of the 
band) by micaceous quartzites. At the west end the ' country ' is mica- 
schist on both sides, with micaceous quartzites to the north and a man- 
ganiferous gneiss to the south of these schists. In the middle parts 
of the band the ' country ' on the north side is micaceous quartzite and 
on the south side is either micaceous quartzite or mica-schist, while at the 
east end, on Sindia Hill, the only rocks noticed were quartzite and vein- 
quartz ; but the immediate ' country ' of the ore-band was not visible. 
This variation in the character of the ' country ' means either that 
there are lithological variations in the same horizon, mica-schist passing 
into micaceous quartzite and this into non-micaceous quartzite, on 
passing from west to east, or that the manganese-silicate band has in- 
trusive relations with regard to the schists and quartzites. I regard 
the former as the true explanation. The gneiss that occurs a little to 
the south of the ore-band at the west end seems to have died out at the 
east end, while the band of quartzite and vein-quartz to the south of 
the gneiss seems to continue for the whole length of the ore-band. 
The ore-band is nearly always composed of gondite or spessartite- 
Character of the ore- quartz-rock (grey, buff, yellow, and purplish in 
colour) and manganese-ore, inter-lenticled and inter- 
banded with quartzite, which itself sometimes contains scattered spes- 
sartite crystals or manganese-oxide minerals. It is only on top of 
Bhamasur Hill that there is any large quantity of ore. On top of this 
hill the ore-band forms a sort of broad causeway up to 80 feet wide. The 
ore is of the hard grey braunite-psilomelane mixture, much banded and 
streaked with yellow spessartite and spessartite-quartz-rock, with light 
and dark grey fine-grained quartzite, and with veins and strings of 
quartz. In one place there is a series of lenticular quartz veins, J to 
1 inch thick, striking E. 40°S. The ore-band on top strikes E. 15° S. to 
E. 20° S. and huge masses of ore have fallen down the slopes on both 
sides. The southern edge of the causeway is like a vertical wall ; this 
continues down the east slope, so that as seen from the east it looks 
