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MANGANESE DEPOSITS OF INDIA : DESCRIPTIVE. [PaRT TV : 
Hamigi. 
Similar manganese-ores occur on the same ridge farther south towards 
the Tungabhadra river. From the hill above the temj^les on the river 
east of Hamigi, pieces of psilomelane of fairly high manganese contents 
.may be broken off, but the deposits appear to be of no importance. 
Specimens brought by Mr. Maclaren from Hamigi consist of concre- 
tionary psilomelane of concentric structure, evidently formed by the 
replacement of the jaspery quartzite ; while specimens collected by 
Mr. Kantharia between Chik-Vadvati and the Tungabhadra river consist 
of pyrolusite, psilomelane, and wad. 
Shirhatti. 
The late Mr. A. M. Gow Smith told me that some pieces of manganese- 
ore were found on the surface of fields to the S.W, of Shirhatti. 
N^rukot State, Rewa K^ntha Agency. 
{See Plate 17.) 
A specimen of manganese-ore from near Jambughoda, collected by 
^. ^ the late Dr. W. T. Blanford, caused me to visit this 
locality. On arriving I found that manganese-ore 
had recently been discovered by a native prospector in a small hill that 
rises to some 150 feet above the surrounding plains and is locally known 
as Ghod-dungri. It is about 2 miles north by west from Jambughoda 
and is situated witliin the boundaries of the village of Jothvad, being 
about half a mile north of this village just to the east of the road leading 
from Jambughoda to Dadiapura. The hill is shown on the 1-inch map 
of this area as running due north and south ; but the south end really 
runs up as a low spur from the S.W. to join the central mass, and 
the north end runs away due north as another low ridge. This hill is 
composed of an intenselv folded series of banded 
Mode of occurrence. . . , , ., . . , . 
gneissic rocks, the strike of which conforms more or 
less with that of the hill ; the dips are usually to the west side of this 
strike, but sometimes point to the east side. Although there is no man- 
ganese-ore of economic value at this locality, yet this hill is of extraordi- 
nary interest on account of the variety and beauty of the minerals and 
rocks composing it and of the relations of these rocks to the surrounding 
granite . This mass of banded rocks rests on a basis of porphyritic biotite- 
granite, which occupies all the low-lying ground surrounding the hill 
and sends out apophyses that traverse the gneisses of the hill. Around 
