790 
MANGAJVESE DEPOSITS OF INDIA : DESCRIPTIVE, [PaRT IV : 
6. Alesup.i 
; Due west of Devi village, a low outcrop of white crystalline limestoue2 
runs up from the west to the ' Ghondee ' niila, of the 1-inch map. At the 
east end, on approaching the nala, the crystalline limestone gradually 
changes to the black variety^, with included spessartite and rhodonite, 
and this passes along the strike into the ordinary spessartite-quartz-rock 
(gondite) partially changed to ore. The total length of the outcrop of 
manganiferous rock is 52 paces, and at the east end the greatest width 
is 5 or G yards with a calciph}Te as ' country.' The ore-band reaches the 
nala and is there cut off by a complex of pegmatite injecting a garneti- 
ferous biotite. gneiss in all directions. Both limestone and spessartite- 
quartz-rock contain lenticles of quartz parallel to the strike. 
This occurrence is not mentioned as having any economic value, but 
because of its mterest, in showing a gradual passage from a white crys- 
talline limestone to spessartite-quartz-rock or gondite. The blackening 
of the limestone is, as explained elsewhere*, due to the deposition 
of a black dust of manganese oxide along the cleavage and twinning 
planes of the calcite. 
7- Devi.5 
(Rai Sahib IVIathtjra Prasad.) 
This deposit was discovered by an agent of Rai Sahib Mathura Prasad 
of Chhindwara, who holds the property on prospecting license. The ore 
occurs as an irregular, interrupted band traceable at intervals for about a 
mile along the northern side of a rmi of sm.all hillocks of cry.stalline lime- 
stone 6 and calciphyre 7, v/hich stretches east from the village of Devi 
and terminates at the eastern end in a hill over 150 feet high. At the 
western end the ore-band lies at the base of the hillocks, but at the eastern 
end it gradually climbs to the top of the above-mentioned hill. Again, at 
the western end the associated rocks have a steep dip to the north, while 
at the eastern end a dip of 25° to the south is shown in the accompanying 
crystalline limestone. 
The ore-band consists largely of rocks composed of spessartite, rhodo- 
nite, and rhodochrosite, the last-named being the least common of the 
three minerals. Amongst these rocks is a beautiful coarse-grained one, 
1 Rec. G.S.I.. XXXIII, p. 212, (1906). 
2 Ibid., p. 198. 
3 Ibid., p. 200. 
i Ibid. 
5 Fee. G.S.I., XXXIII, p. 212, .'1906). 
G Ibid., p. 198. 
7 Ibid., p. 190. 
