52 RAJN'IGANJ COAL FIELD. [CHAP. IV. § 2. 



2. Coarse conglomerate of quartz pebbles, in white felspathic sand. 



3. Sandstone, with two thin irregular seams of coal. 



4. Thick seam of coal (exact thickness not seen) containing intru- 

 sive trap. 



5. Coarse, false-bedded brown grits. 



No carbonaceous shales are seen to occur — just here coal, and white 

 or grey sandstone being the principal beds. A thick seam of coal 

 extends in the neighborhood of the Nunia, from near Etiapura to 

 Samdi. The out-crop is seen for a considerable distance North-east 

 of the last-named village. It is extremely irregular, nor is it indeed 

 certain that it can be considered as one continuous seam, for it 

 frequently splits up into three or four, and the partings generally 

 are masses of sandstone of extreme irregularity in thickness and 

 appearance. This irregularity, as will be seen, is characteristic of all 

 the seams of coal in the Lower Damuda group. 



Just where the Salma dyke crosses the Nunia, this coal seam is seen 

 to be of enormous thickness, perhaps as much as 



Thick seam in Nunia. . 



70 or 80 feet. But of this the greater portion is 

 utterly worthless, being merely a mixture of coal, shale, and sandstone, 

 and it may be doubted whether any portion would repay extraction. 

 Still it is well worthy of exploration, as portions of the seam or seams 

 may be found to supply excellent fuel. A native has cut into the out- 

 crop near Amdia, but the coal abounds in pyrites, and is of very infe- 

 rior quality. 



The thick bed of white felspathic grit forms the base of the Damuda 



„ „ series for a great distance to the West, and is 

 Grits at base of Da- & ' 



muda series. found beyond the Barakar. It is distinguished 



from somewhat similar beds in the Talchir group, by being somewhat 

 coarser and more decomposed, and by never, so far as observed, having 

 the bluish-green tinge so generally seen in the coarser sandstones of 

 the Talchir group. 



