ruAP. xxxvL] 
NACiiM'R : K Axnia. 
86-") 
It will be noticeil (see Plate 32) that the dips of tlie ore-body are 
everywhere directed towards the inside of the horse-shoe. As far as 
can be discovered (the ground being much obscured by debris) mica- 
schists occupy all the ground in the horse-shoe and round its outside 
as far as dotted boundary shown on the plan. The strikes and dips 
of the mica-schists probably curl round parallel to those of the ore- 
body and associated rocks they enclose. All the ground outside 
the mica-schist boundary is occupied by medium-grained gneisses 
composed of quartz, microcline, and magnetite, with subsidiary plag- 
ioclastic felspar. They have a general strike of about east-south-east, 
which would carry them right into the ore-body. It is, of course, ex- 
tremely difficult to unravel the structure of such disturbed Archaean rocks, 
but there aie two fairly obvious ways of explaining the relations of the 
gneisses to the mica-schists. We can either suppose that the mica- 
schists and included ore-band form a large ' eye, ' with the gneisses 
curling round it to the north and south ; or we can, perhaps with less 
probability, suppose that the mica-schists and included ore-band form 
a faulted block in the gneisses. 
From the evidence of the rocks cropping out on the east hill it is 
necessary to assume the existence of a strike fault QY (hi Plate 32). 
This fault, with a cross-fault QZ, explains how the ore-band has become 
doubled in width in the eastern half of the hill. The downthrow is 
to the north as explained in figure 54. The amount of the throw is 
probably about 200 feet or a little less. 
Fig 54. — Diagram illiist rating tlie faulting of Ea-t Hill.Kandr. 
The ore-body is in plan apparently a lenticular band doubled on 
itself and its south-east end dives below the surface as if the ore-body 
were increasing in length with depth from the surface. 
