ECONOMICAL GEOLOGY. 
235 
Protoxide of Iron, . . 
Sesquioxide, “ 
Oxide of Manganese, 
Lime, 
Magnesia 
Phosphoric Acid, . . . 
Sulphur, 
2.45 
91.24 
0.34 
0.5G 
0.00 
0.04 
0.11 
99.05 
Iron, 05,77 
The ore is of notable purity, and the practical tests to which it has 
been subjected have confirmed the indications of the analysis, that it is 
an ore of high grade ; and the quantity is very great. The vein, as 
shown in the section, has a dip to the west at an angle which is a little 
short of 90°. A second vein of the same character 5 or 6 feet thick, 
crosses the main vein near the first shaft as shown in the diagram. The 
ore becomes poorer as the vein is followed beyond the summit of the hill 
northward, until at the distance of 150 yards beyond the upper shaft, the 
quartzite predominates and the ore becomes poor. The distance of this 
mine from railroad is less than 9 miles, and the day is not distant when 
the superior quality of the ore will overcome this sole obstacle in the way 
of its profitable working. 
There are surface indications on the neighboring hills, both north and 
south, for several miles, which 6how that this vein has a considerable ex- 
tension ; and in fact it may be considered as a continuation of the hema- 
tite veins of Deep River. And a magnetic ore makes its appearance 
about 20 miles northeastward, 3 miles beyond the upper forks of the 
Neuse River in the southeast corner of Orange county, on Knapp of 
Reeds Creek, on the farm of Mr. Jos. Woods. The rock here is clay 
slate, more or less chlori tic and quartzitic, and thin bedded. The ore is 
slaty, and is in fact, an impregnation of the chloritic argillaceous quartzite 
with granular magnetite and hematite. The ore is very extensively scat- 
tered over a succession of hills, for about a mile, in a northeast direction. 
The ore bed outcrops at one point for a few rods, where it appears to be 
about 3 feet thick, and has a strike N. 40° E., and dips at an angle of 70° 
to the northwest. The bed seems to be duplicated towards the northeas- 
tern termination, another line of fragments marking the course of a par- 
allel vein several rods to the east of the former. This last is associated 
with a bright vermillion red, and a banded, black and red jasper. The 
