316 
MANGAKESE DEPOSITS OF INDIA : GEOLOGY. 
[Part II : 
examples may be sited the Gaimukh deposit (fig. 47, p. 782) in the Chhind- 
wara district, the Kandri deposit (Plate 32) in Xagpur, and the Balaghat 
deposit. Of these the Gaimukh deposit terminates thus at both ends, the 
Kandri deposit at the south-east end in South HUl and the Balaghat 
deposit at its northern end. But in the majority of cases the termina- 
tion of the deposit in either direction is hidden by soil or jungle, and 
as these deposits are often arranged in strings so that the strike of one if 
produced would carry it into another a mile or two away in the direction 
of the strike, it is not possible to say if this lenticular thinning out is the 
rule or not. One would siispect that in many cases the ore-band is 
continuous between many of the so-called separate deposits and that it 
only needs the uncovering of the intervening ground, no doubt in many 
cases to a considerable depth, to demonstrate this continuity. An 
example is the string of deposits in the Nagpur district stretching in 
an average west to east direction from Dumri Kalan on the west, 
through Satak, Beldongri, Xandapuri, Lohdongri, Kacharwahi, and 
Waregaon, to Khandala on the extreme east. AH these deposits, except 
Khandala, are situated in the allu\'ium, and very little or no rock is to 
be seen in the ground between the separate deposits, everything being 
obscured by alluvium. 
The mere fact that the majority of the deposits lie along fairly well 
Tlie number of ore- defined lines would at first sight be taken as 
horizons. indicating that they correspond to one bed or 
horizon that has been folded, so that its edges have come to the surface 
along several more or less linear outcrops. And the fact that the 
deposits known to occur in the portions of the Chilpis that are only 
moderately metamorphosed, lie at a horizon that may be regarded 
as being near the base of this series, might be taken to indicate that 
the manganese-ore deposjts correspond to a definite horizon near the base 
of the Chilpis, the conglomeratic grit underlying the manganese-ore horizon 
at Balaghat being possibly the base of this formation. The truth of such 
a hj-pothesis cannot at present be either proved or disproved ; it would 
need a very close piece of work, involving the very careful correlation of 
the various beds of rock, in both the CMlpi and crystalline areas, 
to settle the question. The mere fact that there are apparently 
several parallel bands of deposits in the crystalline portion of the 
Nagpur-Balaghat area might be thought to be opposed to the idea 
that there is only one ore-horizon in this area. It must be remem- 
bered, however, that the deposits situated in the more metamorphosed 
areas owe their more crystalline character to the fact that the more 
