ClIAP. XXIX.] SINGlIBHtlM: GITILPI. 627 
This is equivalent to : — 
Ma!igancse . . . . . . . . . . 10-(')2 
Iron .... 3800 
Silioii (total) 14-70 
I'hosj.liorus . . . . . . . . . .0-35 
Round the base and slopes on the N. W. side of the N. E. end of the hil- 
lock, psilonielane crops out in force for some 50 yards and predominates 
over the limonite. A pit dug here almost at the foot of the hillock sho(\'ed 
a depth of two to three feet of the lateritic rock resting on a thin stratum 
of quartzite fragments and this on a much kaolinized granite of medium 
grain^ which in places included patches of hornblendic rock and epidote ? 
This seems to indicate that this hillock is an outlier of Dharwar sand- 
stones and quartzitos resting on the granite, and that the Dharwars have 
been lateritized at the outcrop. 
Some 5 tons of ore had been extracted here ; it was mostly botryoidal, 
mammillated, or columnar, in structure, and apparently of good quality, 
at least as regards the manganese content. A sample yielded the follow- 
ing partial analysis (J. & H. S. Pattinson): — 
Sample Nn. A. 35. 
MnOg 70 01 
-VlnO . . . 4-85 
Fe^O 8-71 
BaO 3-84 
Si02 (combined). . . . . . . . . . 1 • .'"i.T 
Si02 (free) . 0-90 
P2O5 0-79 
H2O (combined) 4-20 
Maisture at 100°C 0-55 
This is equivalent to : — 
]\Ianganese . . . . . . . . . .48-01 
Iron (MO 
Silica 2-45 
Phosphorus . . . . . . . . . .0-35 
About h a mile N.E. of these hillocks I saw, in January 1908, another 
series of excavations to the west of the road. In one place over an area 
of Several square yards, a single horizontal layer of manganese-ore averag- 
ing I inch, and ranging from i ■':o 2| inches in thickness, is said to have 
been fotmd at 1 J feet below the su/face. The material that was jjointed 
out as the underlying rock consisted of pinkish grey jasper and vitreous 
IV c 
