06 IMYB2011-CHHATTISGARH.pmd - Indian Bureau of Mines

Table - 3 (Contd.)
STATE REVIEWS
Agency/ Location
Mapping Drilling
Sampling Remarks
Mineral/ Scale Area No. of Metreage Reserves/Resources estimated
District (sq km) boreholes
Coal
Korba
Raigarh
Limestone
Raipur
Bastar
Saila Pali 1:50,000
1:4,000
Dhaurabhata
Deogaon-Kurra
Granite Murvend-
Guruvandi
250.0
2.0
848.0
83 592
1:50,000 50.0 06 1535.25 -
1:50,000
1:4,000
415.0
2.68
866.50
- 968
- - - - - -
1:50,000 290.0 - - 10
11-6-10
Coal seams of the area occurred in
Barakar formation of Gondwana Super
group. Coal also occurred as cyclic
succession of coal, shaly coal, carb
shale, grey shale & sandstone.
Altogether 14 coal seams were
encountered. Resources were not
estimated during the year.
Coal seams occurred with Barakar
formation as cyclic succession of shale,
carb shale, shaly coal, coal & sandstone.
15 coal horizons have been intersected
in this area. During the year about 29
million tonnes of C to G grade coal
resources were estimated.
Main litho units are shale, limestone
& laterite. Limestone is mostly
horizontally bedded, trending E-SW.
Depth of the limestone was confined
upto 33 m. Limestone of this area is
grey to pink, hard, compact, massive
and stromatolitic. About 80 million
tones limestone resources were
estimated so far out of which, 50
million tonnes of cement (blendable)/
beneficiable) grade limestone resources
were estimated during the year.
Limestone of the area belongs to
Jagadalpur & Kanker formation of
Indravati Group. Limestone occurred
as small mounds & is horizontally
bedded with local warping. Outcrops
of limestone were found in an area of
0.90 x 0.30 km with a thickness upto
10 m. Deposits of high grade
limestone were demarcated around
Villages Chitapur and Devrapal. So
far, 13 million tonnes of cement grade
limestone resources were estimated,
out of which about 6.70 million tonnes
of cement grade limestone resources
were estimated during the year.
Area is mostly covered with
Dongargarh granite with numerous acid
& basic intrusive. Granite block
(dolerite) has been marked as hillocks
with dimesnsion of 500 m x 150 m.
Thickness was found to be around
10 m. These rock are suitable for
cutting/polishing purpose. About
75,000 m
(Contd.)
3 granite block (dolerite)
resources were estimated.