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
GSI
Coal
Reonti
(Son valley (West)
coal fields)
Surguja
-
-
-
11-6-6
-
-
Regional exploration for coal (G-2) was
carried out in this block Tatapani –
Ramkola coalfield to establish the
continuity of Barakar coal seams
beneath the younger Raniganj and
Barren Measures Formations along with
deciphering subsurface structural
disposition as well as to appraise its
resource potentiality. Subsurface data
revealed the presence of Raniganj,
Barren Measures and Barakar
Formations. Six regional (I to VI in
ascending order) and few local coal seams
of Barakar Formation ranging in
thickness from less than a metre to
29.78 m have been recorded between
depths of 491.77 m and 841.20 m.
Seams I to V are important for their
thickness and regional persistency. The
seam nos. IV and V are represented by
four to five split sections with the
cumulative thickness being 29.78 m and
12.22 m respectively. The work is in
progress
Reconnaissance stage investigation (G-
4) was taken up during FS 2010-12 in
Raigarh- Bilaspur Belt to locate
kimberlite clan rocks in the granitic
basement along the high permeable zone
characterized by mafic dykes.
Psamopelitic units comprising
sandstone and shale are exposed in
Dullapur area along nala section of Agar
River. A suspected kimberlitic/
lamproitic rock is reported from parts
of T.S.No. 64F/11, Bilaspur district. The
rock is dominated by altered olivine,
mica and opaques. The top soil below
the bouldery rock outcrop has pink,
purple and orange red garnets (pyrope),
spinels and ilmenites. Further work is in
progress for confirmation. Work is in
progress for confirmation. Ground
checks for interpreted PGRS map was
carried out in the area.
(Contd.)