﻿906 
  

  

  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Pipe 
  clays 
  

  

  

  State 
  and 
  county 
  

  

  Town 
  

  

  Remarks 
  

  

  SILICA 
  

  

  Alumina 
  

  

  

  i 
  

  

  Com- 
  

   bined 
  

  

  Free 
  

  

  Ferric 
  

   oxid 
  

  

  1 
  

  

  Pennsylvania 
  {con.) 
  

   Beaver 
  

  

  Cannelton 
  

  

  Butler 
  

  

  

  67.67 
  

  

  18.28 
  

   21.77 
  

  

  16.38 
  

   20.309 
  

  

  12.96 
  

   19.17 
  

  

  1.03 
  

  

  «j 
  

  

  Butler.. 
  

  

  South 
  Dakota: 
  

   Pennington 
  

  

  Tennessee: 
  

   Knox 
  

  

  59.01 
  

  

  74.22 
  

   63.59 
  

  

  68.35 
  

   62. 
  S 
  

  

  10 
  73 
  

  

  s 
  

  

  Rapid 
  City 
  

  

  Soft 
  shale 
  

  

  1 
  95 
  

  

  4 
  

   5 
  

  

  Powell 
  Station 
  

  

  Fort 
  Benton 
  shale. 
  

   Clay 
  

  

  a 
  2.952 
  

   6.44 
  

  

  6 
  

  

  t 
  ( 
  

  

  Shale 
  

  

  6.88 
  

  

  

  

  

  

  

  

  I 
  

  

  