Chap. XV.] 
GONDITE SERIES : OCCURRENCE. 
307 
empire for rocks, apparently of tlie same character and age, without 
very strong evidence indeed of the strict equivalence of the rocks of 
the two areas. Moreover, it seems desirable at present that the term 
should only be applied to the most metamorphosed type of mangani- 
ferous Dharwar rocks, namely those characterized by the development 
of manganiferous silicates. Of these highly metamorphosed rocks 
there are, as previously described, two divisions, namely the main division, 
characterized by the presence of spessartite-garnet and rhodonite, and 
the subordinate division characterized by the invariable association 
of manganese-ores with crystalline limestones, with the almost invariable 
presence of piedmontite (or possibly other manganiferous epidote). 
It is to the former division, characterized by the association of the 
manganese-ores and rocks with rocks formed by the metamor- 
phism of non- calcareous sediments, such as sand, clay^ or conglomerate, 
that it is at present proposed to restrict the term ' gondite '. Up to 
the present it has been found perfectly feasible to map separately the 
manganese-bearing rocks associated with a ' country ' of mica -schist, 
quartzite, or gneiss, from those of which the ' country ' is a crystalline 
limestone. Should later work show the impossibility of always clearly 
separating the two types of rocks it may then be found necessary for 
convenience of mapping to extend the term ' gondite ' to the second 
group. In the meantime, they can be most conveniently referred 
to as the manganiferous limestones. 
The areas in which manganese-ore deposits, or rocks belonging to 
this series, have been up to the present located are the following : — 
2. Jhabua State, in the Bhopawar Agency, Central India. 
3. The districts of Balaghat, Bhandara, Chhindwara, and Nagpur 
in the Central Provinces. 
4. It is probable that the manganese-ore deposits that have been 
found in the State of Banswara in Rajputana are associated 
\vith rocks sufficiently metamorphosed to justify their in- 
clusion in the gondite series. 
The principal development of these rocks is in area No. 3, which will be 
referred to as the Nagpur-Balaghat area^ 
In discussing the relationships of this series with its 'country' it is ne- 
cessary to depend almost entirely on the Central Provinces. The portion of 
Areas in which found. 
1. Narukot State, in the Rewa Kantha 
Agency, Bombay Presidency. 
