Chap. XXXV.] jabalpur : dharampura. 
833 
The following is an analysis of Gosalpur pyrolusite by Messrs. Gil- 
christ and Riley ' : — 
Manganoso ........ 53 -22 
Iron ......... 1"87 
Siliooons matter ....... 1"93 
Phosphorus ■ . . ()-19 
Siilphur trace 
Moisture ..... ... 0-56 
An analysis of Gosalpur ore has also been published by C. R. von 
Schwarz. 2 
The outcrops of the Gosalpur rocks in which are found the pyrolusite 
referred to above are surrounded by laterite, in which, also, manganese- 
ore sometimes occurs. 
To the north-west of the area of Gosalpur rocks and laterite the 
Sihora rocks crop oat. Both Mallet 3 and Bose record sections across 
the Sihora rocks at a little less than j mile to the N. W. and N. N. W. 
of the Gosalpur dak bungalow. There seems to be a considerable thick- 
ness of manganiferous hematite with psilomelane at the surface. Mallet 
says : — 
' A sample of the more manganiferous part c f the schist afforded 18 02 per cent, 
of manganese (with a httle cobalt), while the psilomelane gave 83-20 per cent, of 
available peroxide.' 
31. Dharampura. 
See Bose, pages 73, 74, 85, 86, 224. 
At intervals along the ridge of Sihora rocks, principally banded 
hematite-jaspers, running »S. W. from Gosalpur through Dharampuraj 
Hirdenagar, and Deonagar, to Marhasan, the hematite is very mangani- 
ferous. Mr. Bose records three sections seen in tienches across this 
ridge. I cleaned up the one he mentions on the middle of page 74 of 
his first paper as lying about f mile east of the village of Dharampura. 
In addicion to the portion of the trench recorded by Mr. Bose there is 
another 104 feet of interrupted trench to the N. W. In this portion 
the- manganiferous hematite seemed to be of better quality than in the 
portion of the trench recorded by Mr. Bose. Hence I took a sample 
1 Iron, XXVIII, p. 476, (1886) ; Jour. Iron Sled Inst, No. II of 1886, p. 618. 
2 StaM. u. Eisen, XXI, p. 341 ; J. I S. /., Vo. 11 of 1901, p. 350. 
3 B&c. G. S. I., XVI, pp. i02, 103. 
