File:Transactions (1895) (14760192946).jpg

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Identifier: transactions14cana (find matches)
Title: Transactions
Year: 1895 (1890s)
Authors: Canadian Institute of Mining and Metallurgy
Subjects: Mineral industries Mines and mineral resources
Publisher: Montreal (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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•d i;ii«r!»itf Al^onJna Porplrrr^ Con^oinerati (After Irving, Prof, paper 26, U.S. Geological Survey). Replacement Ore-Bodies—Irving 425 if it is very slight. This is well illustrated in the (Plate II)comparative series of cross sections of ore shoots in the BlackHills. Ore shoots frequently terminate along their strike, althoughthe fracture or opening may continue, and is sometimes as largeas that where the ore-body is extensive. The su))j)ly of solutionseems to have been confined chiefly to certain areas and its amounthas been insufficient to produce extensive replacement except inthe heart of the channels of flow. Cross sections I, J. K, L andM, Plate II, show progressively decreasing amounts of mineral-ization from .^in^le verticals. When all of the causes which influence the form of a replace-ment mass are together present in a single ore-body—viz., formand distribution of channels of access, varying porosity, varyingsusceptibility and varying supply of mine waters, it is

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https://www.flickr.com/photos/internetarchivebookimages/14760192946/

Author Canadian Institute of Mining and Metallurgy
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Flickr tags
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  • bookid:transactions14cana
  • bookyear:1895
  • bookdecade:1890
  • bookcentury:1800
  • bookauthor:Canadian_Institute_of_Mining_and_Metallurgy
  • booksubject:Mineral_industries
  • booksubject:Mines_and_mineral_resources
  • bookpublisher:Montreal__etc__
  • bookcontributor:Gerstein___University_of_Toronto
  • booksponsor:University_of_Toronto
  • bookleafnumber:490
  • bookcollection:gerstein
  • bookcollection:toronto
Flickr posted date
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30 July 2014


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