File:The quicksilver resources of California (1903) (14597016028).jpg

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Identifier: quicksilverresou00forsrich (find matches)
Title: The quicksilver resources of California
Year: 1903 (1900s)
Authors: Forstner, William California State Mining Bureau
Subjects: Mercury mines and mining Mines and mineral resources Mercury ores
Publisher: Sacramento, Calif. : W.W. Shannon, supt. of State printing
Contributing Library: University of California Libraries
Digitizing Sponsor: Kahle/Austin Foundation and Omidyar Network

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information as to the depth from the surface of thecontact between the Lake deposits and the brecciated meta-morphic sandstones and shales. The above quoted article of Le Conte and Rising continues:The lower level, 260 feet, reached the ore body at 136 feetfrom the shaft. The varying dips on the different levels showthat the strata are very much broken up. The brecciatedlayer, which as in the Wagon Spring cut is composed of frag-
Text Appearing After Image:
^^V >V^ Shale. Cinnabarore. 68 QUICKSILVER RESOURCES OF CALIFORNIA. ments of shale and sandstone, forms also here the waterchannel. Where the ascending water is abundant, the matrixis hot mud; where the rock is drier, this has changed into apaste containing disseminated metallic sulphides, or into aregular indurated deposit from solfataric waters. The spacesbetween the fragments are sometimes only partially filled;the lining of the cavities is generally cinnabar, sometimespyrites, or silica, or all of them; the silica grading from chal-cedonic into gelatinous. (See Fig. 17.) The ore deposit is not entirely confined to the breccia. Its form is ver)- irregular; sometimes ore bodiesare separated b)- bar-ren rock, sometimesthey enter the shat-tered sandstone, leav-ing the breccia. Nofree sulphur is found in the ore bodies. The irregularity of the ore- bearing fissures shows that the shattering ef-fects were not confined to the brecciated strata. Comparing this ore occurrence with that

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https://www.flickr.com/photos/internetarchivebookimages/14597016028/

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Flickr tags
InfoField
  • bookid:quicksilverresou00forsrich
  • bookyear:1903
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:Forstner__William
  • bookauthor:California_State_Mining_Bureau
  • booksubject:Mercury_mines_and_mining
  • booksubject:Mines_and_mineral_resources
  • booksubject:Mercury_ores
  • bookpublisher:Sacramento__Calif____W_W__Shannon__supt__of_State_printing
  • bookcontributor:University_of_California_Libraries
  • booksponsor:Kahle_Austin_Foundation_and_Omidyar_Network
  • bookleafnumber:85
  • bookcollection:caminesgeo
  • bookcollection:ucdavis
  • bookcollection:americana
Flickr posted date
InfoField
30 July 2014



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