332 
MANGANESE DEPOSITS OF INDIA : GEOLOGY. [PaRT II 
case in point is th? winchite-braunite-calcite-quartz-rock or winchite- 
schist of Kajlidongri, in which the braunite grains are idiomorphic in 
shape, taking the form of tiny octahedra, which are enclosed in all the 
other minerals in such a way that there can be no doubt that they were 
formed at the time of formation of the schist by the metamorphism of the 
sediments from which they were derived. 
As has already been mentioned, the rocks of the gondite series, i.e. 
those enumerated above, occur interbanded both one with another and 
with various quartzites and micaceous schists, many of which differ from 
ordinary quartzites and schists on account of their manganese contents. 
The following is a list of the rocks occurring interbanded with the man- 
ganese-silicate rocks and manganese- ores of the Cen-^r'l Provinces : — 
List of the rocks interbanded tvith the rocks of the goad..,^ cjries in the 
Central Provinces. 
Quartz-rock. 
White quartzite. 
Light grey quartzit . 
Dark grey quartz;te. 
Black quartzite. . ■ 
Red quartzite. 
Purph'sh quartzite. 
Pinkish quartzite. 
Pyroxenic quartzite. 
Spessartiferous quartzite. 
Quartzites containing manganese-ores 
Micaceous quartzite. 
Quartz-schist. 
Pine-grained mica-quartz-schist. 
Bioti te -quar tz-sch ist. 
Muse ovi te- sch ist. 
Manganiferous micaceous schists. ' 
Manganiferous gneiss. 
As we have only one deposit of any importance in Jhabua to deal with 
the list of rocks interbanded with 1 he rocks of the gondite series there is 
naturally a smaller one than for the Central Provinces. It is as 
follows : — 
List of the rocks interbanded with the rocks of the gondite series in 
Jhdbua. 
Light grey, dark grey, black, red, and |)inkish, quartzites. 
Pyroxenic quartzite. 
Spessartiferous quartzite. 
Mangamferou.<<, micaceous, and pyroxenic, schists. 
