File:Economic Papers (1912) (14580972350).jpg

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Identifier: economicpapers2228unse (find matches)
Title: Economic Papers
Year: 1912 (1910s)
Authors:
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Publisher: Raleigh : N.C. Geological Survey
Contributing Library: State Library of North Carolina, Government & Heritage Library
Digitizing Sponsor: LYRASIS Members and Sloan Foundation

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iter. A large number of other descriptionshave been prepared also, which it is hoped will be used in a later report bythe State Survey. The brief notes on the general geology of the region andon the mica deposits are largely taken from an earlier paper,t in which theoccurrence of mica-bearing pegmatites and their origin were treated, ratherthan commercial mines. A number of the mica deposits of North Carolina were opened in prehis-toric times by aborigines. Some of these operations have been described inthe early days of mica mining by white people, and several of the depositswhere such work was done, are described below. The present period of micamining was begun in 1867 by L. E. Persons, of Philadelphia, previously ofVermont. Mr. Persons attention was directed to Jackson County by some- *U. S. Geological Survey, Bulletin 430-J, advance chapter from Contributions to Economic Geol-ogy, 1903. tMica deposits of western North Carolina: Bull. U. S. Geol. Survey No. 315, 1907, pp. 400-422.
Text Appearing After Image:
MIXING INDUSTRY. 0:J one in Philadelphia who had seen a crystal of mica exhibited at the StateFair in Columbia in 1858 by D. D. Davies, of Webster. In the fall of 1867Mr. Persons went to Jackson County and learned from Mr. Davies the loca-tion of favorable prospects for mica in Jackson and Haywood counties, whichhe soon opened.* Shortly after this the mica industry began in Yanceyand Mitchell counties with the opening of the Silvers mine by Thomas L.Clingman. CHARACTERISTICS OF MICA. Of the numerous varieties of mica there are but four that have commer-cial value. These are muscovite, phlogopite, biotite, and lepidolite. Musco-vite and phlogopite have a wide application in both sheet and ground form.Biotite has only recently been used in the ground form. Lepidolite is usedas a source of lithia salts and to a small extent for ornamental purposes.Muscovite is the only mica that has been mined extensively in North Caro-lina, and it is only within two years that a small demand has arisen

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Volume
InfoField
vol. 22-28
Flickr tags
InfoField
  • bookid:economicpapers2228unse
  • bookyear:1912
  • bookdecade:1910
  • bookcentury:1900
  • bookpublisher:Raleigh___N_C__Geological_Survey
  • bookcontributor:State_Library_of_North_Carolina__Government___Heritage_Library
  • booksponsor:LYRASIS_Members_and_Sloan_Foundation
  • bookleafnumber:83
  • bookcollection:statelibrarynorthcarolina
  • bookcollection:americana
Flickr posted date
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28 July 2014
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