Chap. XL.] 
VTZAGAPATAM : SANDAPURAM. 
1115 
it is probably the same rock, a biotite-pyroxene-gneiss, as that found 
()vorlyin<^ the inaiiganiforous band at Tjiduru (see page 1 1 1.'}). 
The band of manganese-silicate-rock is of great interest owing to its 
variable mineral composition. It varies from 
The graphite-bearing f^^^.^^ coarse-grained and contains the follow- 
iiianganese-silicate-rock. f 
ing minerals : — manganese-garnet, green pyro- 
xene, rhodonite, biotite, quartz, apatite, sphene and graphite. The 
special feature of this rock is, of course, the graphite, which is iisually 
most intimately associated with the more quartzoes layers and occuis in 
scales up to ^ inch across. 
24. Other Localities. 
Just by the village of Sandapuram, on the path leading from Burja- 
valsa Inspection Bungalow to Chintelavalsa 
Sandapuram. (page 1 1 13), I found, in addition to a pebble of 
psilomelane, several pebbles of a dark manganiferous rock, of which 
the one taken was showr by the microscope to be an apatite-spandite- 
rock in which both apatite and garnet were partly replaced by man- 
ganese-ore. The so\irce from which these pebbles were derived was not 
apparent. About 200 yards east of Sandaupram there is a well-wooded 
rounded ritlge. Where I crossed this at the northern end I saw only 
khondalite (with spots of secondary manganese oxide) ; but a more 
careful search might reveal the existence of a band of manganiferous 
rock in this hill. 
Sandapuram is not marked on the map (Plate 56), but is probably 
about 1 a mile north of Sedaralavalsa (C'hedulavalsa on the map), situ- 
ated some two miles E. by N. from Chintelavalsa. 
Mr. Colville, prospecting on behalf of Mr. Blechynden, found an oc- 
., ciirrence of manganese-ore and manganese- 
Kaiitika])uli. -i- , i -rV . -i -n- - 
silicate-rock near Kantikapilli village, 51 miles 
N. N. E. of Kothavalsa railway station. The occurrence was described 
as a ' solid lode about 20 yards wide ', but the specimens brought by 
Mr. Blechynden consisted of a heavy, altered, coarsely crystalline 
rock that the microscope shows to be composed of thodonite, a 
brownish green pyroxene, and spandite, with a little apatite. This local- 
ity is not shown on Plate 56 of this Memoir, as it is some 18 miles 
S.W. of Vizianagram. 
