APPENDIX. 
93 
ance, however, was here shifted to the north-west, so that when it re-appears 
on the west side of the Hanteeyalee chain, it is with its relative distance 
from the summit of the Blue Ridge. 
The out-crop of Chrysolite at this point, on Buck creek, a tributary of 
the Hanteeyalee river, is the boldest I have seen at any point on the zone. 
Here, too, and lying on the south and upon the Chrysolite, is the heaviest 
bed of Syenite I have ever seen. It is at least ten thousand feet thick. 
It sets in rather abruptly, and from this point south-westward is very per- 
sistent, constituting a distinguishing feature with all the Chrysolite out- 
crops as far as*I have traversed the belt. 
I have been somewhat particular in describing the immediate geology 
of this zone, because it has a significance in reference to the occurrence of 
Corundum, as will be seen in the sequel. I am sure the reader will not 
regret this description of the rocks and their relations, when he comes to 
consider that it is not only certain classes of rocks, but the special condi- 
tion and associations of such rocks that produce any given class of 
minerals. 
The Chrysolite bears decided marks of its igneous origin. Its general 
crystalline texture, together with disseminated octahedral crystals of Mag- 
netite and ChromeHron, speak of its igneous origin. It is a laminated 
rock, but the strike of its laminse seldom conforms to the strike of the 
enclosing rocks. It appears to have been protruded or lifted through the 
fissures and laid at various angles across the enclosing gneiss. It cannot, 
therefore, be regarded as a regular interfoliation, nor as an intercalation 
with the enclosing beds. It differs from them, as already stated, in its 
strike, and generally in its inclination. These facts all point to it as an 
igneous rock. 
These Chrysolite beds are traversed by numerous seams or veins of 
Chlorite— mostly the species Cornndopholite, Leuchtenbergite, and prob- 
ably Rhodopholite, together with Talc, Asbetus and Chalcedony. I now 
speak more particularly of Corundum Hill or the Culsagee mine. There 
also occurs here, in connection with the Chryoslite, what I have named 
Anthophyllite rock. This rock is composed of Talc, green Chlonite and 
Anthophyllite, with disseminated crystals of Chrome Iron— the Anthophyl- 
lite, however, largely predominating. There exists also in these veins or 
seams of Chlorite, massive black Tourmaline. This is sometimes wrapt up 
in apparently geodes of Chlorite. I have occasionally seen specimens of 
it which possessed regular tables, resembling in shape the tabular pieces 
of Corundum often found in the Chlorite. On these grounds are also 
found Actinolite Tremolite, Chrome ore and what is perhaps a species of 
Pyropholite. 
