Final Report Ordered By Legislature 1891 a Summary Description of the Geol

Cover Final Report Ordered By Legislature 1891 a Summary Description of the Geol
Final Report Ordered By Legislature 1891 a Summary Description of the Geol
Pennsylvania Geological Survey 2d 1874 1890
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No quartzite seen. Limestone exposed in the wall. Grade of ore 40% to 48%. Stopped 1874. Coppen- hoffer's and Garber'sare small banks along the same north foot of Chiques ridge, following the fault.
IRON MINES IN THE PRIMAL UPPER SLATE. 209 Hollow bombs of ore, sometimes tilled with very soft fine clay or simply with water and lined inside with black oxide of iron, * are common.
Until the introduction of the Lake Superior Marquette and other red hematite ores Pennsylvania easily held its preemi
...nence as the great iron smelting state of America by reason of the great number and remarkable size of its brown 1 hematite (limonite) iron deposits ; and by importing the richer magnetic and specular ores for mixing with its own stock of limonite and fossil iron ore it still re-mains the principal iron state, furnishing always about one-half of all the iron produced in the United States. She was the first to adopt Bessemer' s process of making low steel in 2, and afterward 5 and 10 ton flasks, f Most of the great limonite beds are, as has been said above, in the Upper Primal slates.

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