CH.VP. XXIX.] 
SINGHBHUM : BISTAMPUR. 
G20 
8. Bistamoup. 
This village is tho one marked as Matagota on the map, the latter 
village being more to the south. The ore occurs in a group of low hills 
situated i to ^ mile W. N. W. of the village and known as Tumang Buru.^ 
The hills are composed of an outlier of sandstones and grits resting on a 
basis of the usual fine-grained granite ; in places sericite-phyllite seems 
to cap the grits. In many places the rocks have been converted into man- 
ganese- and iron-ore, especially the former, and as the bedding of the 
rocks is about horizontal the ore tends to form a bed, which over one 
small area about 80 yards long and 80 broad often reaches a thickness of 
two feet. At this particular spot, which is on a plateau-like piece of 
ground just to the N. W. of the S. E. hillock on the map, perhaps 20 tons 
of ore had beeii extracted from a series of shallow pits and trenches. The 
ore was largely very fine-looking bluish psilomelane with scattered specks 
of pyrolusite ; but some of it showed abundance of residual sericite. A 
sample of ore taken from these heaps was analysed by Messrs. .J. & H. S. 
Pattinson with the following residt : — 
Sample No. A. 38. 
MnOo 65-81 
MnO 6-84 
1-95 
BaO 1.3-76 
Si02 (combined) 0-10 
Si02 (free) 3-05 
P2O5 0-62 
H2O (combined) 4-60 
Moisture at 100°C 0-80 
This is equivalent to : — 
Manganese 46-80 
Iron 1-37 
«ilica (total) 3-15 
Phosphorus . . . . . . . . . .0-27 
From the west end of this plateau there rises a hill, somewhat higher 
than the others, composed of sericite-phyllites with vein-quartz ; some 
pits on its slopes exposed a layer of tabular manganese-ore overlain bv 
debris of white vein-quartz, resting on the phyllites, and obviously 
derived from them by replacement. 
1 Bum is the Kol word tor Hill. 
