674 
MANGANESE DEPOSITS OF INDIA : DESCRIPTIVE. [PaRT IV : 
deposit of manganese-ore. The manganese occurs in the form of patches 
of pyrolusite in a breccia composed of pieces of white quartzite up to 6 
inches in diameter set in an ochreous matrix, which seems to be decom- 
posed limestone. Possibly this is a case of a Bijawar breccia of lime- 
stone and quartzite decomposed at the surface with tlie introduction 
of pyrolusite, since the predominant rock round the occurrence is Bija- 
war limestone. But as there is Lameta sandstone resting on the Bija- 
war limestone close by, it is just possible that this rock is of Lameta age. 
1 had a small trench dug across the nala ; this showed that at a depth of 
2 feet the manganese-ore became scarce, the breccia of quartzite in a 
yellow matrix still persisting (17-338, 17-433, 17-592, and 17-593). 
2. Ratagarh. 
In a tributary of the Kanar at Ratagarh Mr. Vredenburg found a 
solitary boulder, which when broken open v/as found to consist largely of 
a beautiful dark grey silky mineral occurring in divergent plume-like 
tufts, and showing the structure known as cone-in-cone. The mineral 
itself is too hard for pyrolusite, and too soft for psilomelane. Hence it 
is not improbable that it is a very finely fibrous variety of hollandite ; 
but it would need a complete analysis to decide this. 
Katagarh is not marked on the 1-inch map of this area. It is the 
name of a camping place on the east bank of the Kanar River, about 7 
miles east of Katkut, and i a mile S. E. of the hill marked on the map as 
A 818 (16-462). 
3. Hill 888 ft. (S. W. of). 
Some manganese-ore was found by Mr. Vredenburg at a point in a 
nala 1-6 miles W. S. W. of the point A 888 on the 1-inch map. The 
specimen brought is wad, very calcareous in places, and perhaps the re- 
sult of the surface replacement of Bijawar limestone (16 458). 
4. Katotia. 
In a tributary of the Katotia Khal, at a point E. S. E. of 
Katotia, Mr. Vredenburg found a manganiferous and ferruginous sand- 
stone with a calcitic cement (16-504). 
5. Pola Khal. 
In the nala Ijdng to the N. E. of the village of Pola Khal Mr. 
Vredenburg found a considerable amount of basernent conglomerate and 
