96 W. M. Fontaine—Geology of the Blue Ridge. 
The following accessory minerals occur occasionally : garnet, 
rutile, rubellan, pyrite. 
For much of the distance above Lynchburg mica slate pre- 
dominates. It shows mostly a dip south-southeast, but several 
altered. This is succeeded by a narrow band of mica slate, 
dipping southeast, toward the gneiss. The slate is succeeded 
the highest foot hills of the ridge here. This rock extends 
for a half mile, and is overlaid unconformably by mica slates 
and schists, through which it has evidently been protrud : 
It is a massive coarse-grained rock, composed principally 
red feldspar (orthoclase), quartz, and a smaller amount of horn- 
blende. None of the constituents are well crystallized, or dis- 
tinctly segregated. The feldspar forms large particles and the 
hornblende shows a tendency to arrange itself in irregular 
patches and lines) Some greenish feldspar occurs. ee 
tion with the slates on the west side well shows the relation ‘ 
the two systems. The slates lean upon the syenite with a IP 
of 45° to the northwest, showing a sharply distinct line of cot 
