Identifier: reportofgeologic00nort (find matches)
Title: Report of the geological survey of North Carolina. Vol. I. Physical geography, resumé, economical geology
Year: 1875 (1870s)
Authors: North Carolina. State Geologist North Carolina Geological Survey (1883-1905)
Subjects: Geology
Publisher: Raleigh : J. Turner, State printer and binder
Contributing Library: Boston Public Library
Digitizing Sponsor: Internet Archive

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re numerousand lie at various angles with the meridian and with the horizon. Therock is a talco-quartzose slate, knotted and toughened with much tremo-lite. The ore is liraonite, with the exception of one vein near the topand back of the hill, which is a hematite, (in part specular), and much re-sembling the Evans ore. There is much of this ore on the surface inscattered fragments, indicating a vein of considerable extent, which, how-ever, had not been exposed. Most of the other veins have been opened,but the pits and tunnels were so much filled and fallen in that no accu-rate measurements could be taken at the time of my visit last year. But itwas easy to see that two or three of them were very large,—10, 15 feetand upwards. The ore is very spongy, porous, scoriaceous, botryoidal,mammillary, stalactitic, tabular, foliated, dendritic, and of many fantasticand nondescript forms. The workmen state that there are large cavities(vuggs) in some parts of the veins. ECONOMICAL GEOLOGY, 231
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232 GEOLOGY OF NORTH CAROLINA. The analyses below are of samples from the 90 feet shaft, nearest thehematite vein, and may be considered as fairly representative: 24 2o Silica,. 1.42 3.79 Alumina, - Sesquioxide of Iron, 82.02 83.69 Protoxide 0.11 Lime, 1.19 Magnesia, 0.11 Phosphoric Acid, 0.00 trace. Sulphuric Acid, 0.00 0.7T Water, 15.26 100.00Mettallic Iron, 57.41 58.6f The first of these analyses was made by Chatard, for Dr. Genth, thesecond by Mr. Hanna. This ore was worked on a considerable scaleduring the American Revolution, and again during the late civil w^ar, andthe irou is reported to have been of good quality ; and it is obviously anore very readily smelted. The presence of the hematite vein and theproximity of the ball ore, which was successfully used as a flux in the lastworking of the furnace, furnish admirable conditions for advantageousiron manufacture. And it is gratifying to be able to state that there is aprospect of the immediate development of the property by the

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