COKUNDUM IN METAMORPHIC ROCKS. 59 
to have been drawn out by the shearing processes. The general 
character and shape of the fragments of corundum would indicate 
that they Avere original constituents of th(> igneous rock and were not 
formed during its metamorphism. 
The exact classification of this rock is not apparent, and it is here 
simply designated an " amphibole-schist," according to its present 
character. 
CORUNDUM IN CIILORITE-SCIIIST. 
Besides being associated with chlorites in the peridotites and 
pvroxenites, already described, corundum is found in the louir belts 
of chlorite-schist that traverse the country 10 or 12 miles southeast 
of Webster, Jackson County, N. C. These chk)rite rocks, which 
sometimes attain a width of several hundred feet, are traceable for 
miles across the country. Almost the only constituent of these rocks 
is a green, scaly chlorite, though sometimes there are present small 
grains of feldspar, and occasionally needles of amphibole. The 
chlorite is in small scales, never very coarse, as is sometimes the case 
in the zones about the peridotite, and often these scales are so minute 
as to give the rock a very compact appearance. 
In one of these belts, on Caney Fork of Tuckasegee River, Jackson 
County, N. C, corundum is disseminated through the chlorite for a 
thickness of 8 feet, in small, rounded masses, ranging in thickness 
from minute grains to an inch, and there the chlorite is not so compact 
as elsewhere. The corundum is usually wrapped with a white coat- 
ing of mica, which is a secondary mineral derived from the corundum. 
The mica is often in radiating scales perpendicular to the outer sur- 
face of the corundum, and while in some cases it is very thin, in other 
cases it has replaced nearly all of the corundum, leaving but a grain 
of that mineral in the center. 
In Towns and Union counties, Ga., near the North Carolina line, 
numerous outcrops of chlorite-schist occur on the waters of Brass- 
town and Arkaqua creeks, many of them corundum Ix'aring. In 
some cases these schists are associated with outcrops of recoguizable 
peridotite or troctolite, but in the majority of cases only the chlorite- 
schist is visible. To all appearance these outcrops are simihir in 
character to those just described in Jackson County, N. C. At one 
of these localities, however, at the Track Hock Gap corunduui mine, 
it has been shown that the chlorite-schist is an aheration proihiction 
of amphibolite or an amphibole-peridotite," specimens only partially 
altered being brought to light in the deeper workings. 
In PI. Ill, A, there is illustrated the occurrence of coruiiduui in 
chlorite at the Corundum Hill mine, Cullasagee, Macon County, N. C. 
» King, F. P., Bull. No. 2, Geol. Survey Georgia, 1894, pp. 92-95. 
