Chap. XXXVT.] 
NAGPUR : SATAK. 
901 
Rubble 
Broken qiint'tz 
au tl m ica 
_ Other outcrops of banded gondite partially altered to ore are «een 
right into tlie village on this same line of strike, coarse muscovite-nuartz- 
schist being apparently the associated rock. In the village there are a few 
pits showing loose pebble-ore deposits resting on mica-schist. 
Satak II. 
(Central Provinces Prcspectino Syndicate.) 
{See Plate .36.) 
_ This deposit is situated on the east side of 8atak ^allage, from which 
it IS separated by a pond. It takes the form of a low flat bare mound 
t't i % "^t ''f'^^ "^^^ «f situated on 
the south-west side of the pond, is shomi in Plate 36 figure 2 and 
has an outcrop of many large dark-coloured blocks of rock, composed 
of manganese-ore, large reddish and small yellow spessartite crystals, 
rhodomte quartz, and dark grey quartzite. The width of this outcroi; 
IS 2o yards and a small pit on top showed a dip of 50° to S 10° E Fur- 
her along the outcrop a dip of 40° to S. 30° E. was shown in another pit. 
A third pit showed the section illustrated in figure 63. The broken 
manga n e s e-o r e 
' beds ' shown rest- 
PLANE ^ ing unconformably 
1 on the upturned 
■<i>^^^j^.'S-^ edges of the mica- 
schist are separated 
from the latter by a 
thin layer of broken 
quartz and mica 
fragments, which 
also separates these 
broken ore-beds 
from the layer of 
.jl/^fi., . . altered spessaitite- 
quartz-rock and 
Fig. 63. — Section seen in a pit on the Satak ore moiuul . quartzite that 
forms the top of the manganese-ore ' beds ' (A). The probable explana- 
tion of this phenomenon is that the mica-schists, being softer than 
the manganese-ore, were cut down by weathering so as to leave an 
upstanding ridge of the manganese-ore beds (A). Then the manganese- 
ore, B, which was probably once a continuation of A above the 
present surface, was let down along a miniature strike-fault-plane 
or slip-plane to its present position, forming an interposing friction 
breccia of mica and quartz from the mica-schist and uppermost layer 
of the manganese-rock. If this small slip-plane continue for any dis- 
tance along the ore-ridge it must give rise to a greater width of outcrop 
IV u 2 
