Chap. XXXV. ] 
JABALPUR DISTRICT. 
815 
circumstance, and because of residual fragments sometimes found in the 
limonite, that these Hinonites have been formed by the replacement at 
the surface of the interbanded shaly slates and hematite-jaspers, the 
resultant limonite retaining the slaty structures of the replaced rocks. 
These limonite are sometimes, however, free from this slaty structure 
and are then chert-like in appearance, and vary in colour from ochreous 
brown to liver-brown. The limonite is often traversed by veins of 
psilomelane ; which is also often present in the limonite in irregular 
concretionary masses, sometimes of considerable size, as on Kasai Hill. 
Should iron smelting on European Hues ever start anywhere near this 
district, these linionites could probably be worked profitably and sorted 
as worked into iron-ore comparatively free from manganese, mangani- 
ferous iron-ores, and manganese-ores. The quantity obtainable at 
Darshani Hill, Kasiii Hill, and the Mansakra ridge, and other localities 
in this area, is probably not inconsiderable, although it must be remem- 
bered that by its very origin this ore is only found superficially. As 
examples of the quality of these ores the following analyses of samples 
taken by myself are interesting : — 
Analyses of manganiferom limonites. 
Number of sample. 
C4 
65 
A. 8 
Locality. 
Mansakra. 
Sakri. 
Kasai Hill. 
MnO 
005 
0-00 
8-64 
MnO„ 
1-48 
0-91 
0-95 
Fe„0; 
73-03 
60-12 
67-28 
Bab 
0-11 
SiO., (combined) .... 
1 22 
2-05 
4-30 
SiO; (free) 
3-99 
9-58 
0-80 
P2O5 
0-74 
1-03 
1-91 
H,0 (combined) .... 
10-30 
Moisture at 100° C 
0-38 
0-29 
0-65 
These are equivalent to : — 
Manganese ..... 
1-29 
0-71 
6-20 
Iron ...... 
51-12 
42-08 
47-10 
Silica (total) ..... 
521 
11-63 
5-10 
Phosphorus ..... 
0-323 
0-044 
0 853 
9 
