ClIAP. XXXIII.] BHANDAEA : MIRAGPUR. 
747 
muscovite-gneiss exposed to the east of No. 2. A talus of ore-fragments 
covers the surface of the ground {)ractically everywhere inside the 
dotted line of figure 45, except where the ore outcrops are situated. ^ 
The capping on hillock No. 1 is 26 paces across from north to south 
Characters of the ^^^"^ ^^'^^ ^^^^ consists of nearly 
exposures. horizontal layers of ore, quartzite, and spessartite- 
bearing rock. The dip at the west end is practically horizontal and 
round the other edges is small and directed towards the interior of the 
patch. Exposure No. 2, also forming a capping to a hillock, is about 
160 paces long and 50 broad ; the dip at rtie west end is very small to 
the W. 5° S., the dips elsewhere being slight and directed to the 
interior of the patch. Along the north edge of the patch the ore crops 
out in massive beds forming a vertical scarp with a thickness of at 
least 12 feet of ore, the debris on the slopes preventing the full 
thickness from being seen.2 The manganese-ore of this patch is very 
much veined with quartz and patched with yellow garnet, and as seen 
before work was commenced the quantity of good quality ore seemed 
very small. When the deposit was opened up, however, it was found 
that the layers below the capping contained plenty of good ore. 
The ore itself is sometimes the hard grey variety and at others is 
soft and brownish. Exposure 6 on the south side of the tank is 150 
paces long with an average strike of N. 10° W., and a width of 
22 feet in one place where the dip is 60° to the west side, a dip of 33° 
being seen in another place. This outcrop consists almost entirely 
of hard grey ore ; but this ore is often to a certain extent impaired by 
ferruginous and siliceous matter lining cavities. Exposure 3 starts 
on low ground on the north side of the tank and gradually rises up a 
low ridge, forming a band over 200 yards long with an average strike 
of about N. 20° W. and a variable dip, usually 30° to 60° to the 
west side ; but where the top of the rise is reached both dip and strike 
are very variable, the ore-band in one place having a local strike of 
E. 22° N., vertical. 3 A little excavation had been carried out alone 
1 By my second visit — December 1907 — sufficient work had been done to show that 
the ' country ' is almost everywhere typical mica-schist, but sometimes so coarsely 
crystalline as to suggest a muscovite-quartz-pegmatite. 
2 In 1907, the thickness was seen to be at least 15 feet. 
3 The reason for this variable dip was clearly seen in 1907, in the workings. The 
ore- band is cut off on the south-south-west side by a north-west fault, approxi- 
mating in direction to a strike fault. The rocks on the south-west side of the fault 
are mica-schists. At its north-north-west end, the ore-band is violently folded about 
axes roughly parallel to the direction of dip, and at right angles to the fault. 
