﻿128 
  

  

  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  a 
  few 
  degrees 
  toward 
  the 
  north. 
  So 
  far 
  as 
  can 
  be 
  estimated 
  from 
  

   the 
  surface 
  the 
  breast 
  of 
  ore 
  must 
  have 
  averaged 
  about 
  15 
  feet. 
  

   The 
  walls 
  in 
  both 
  pits 
  consist 
  of 
  microperthitic 
  gneiss 
  of 
  granitic 
  

   character 
  with 
  the 
  high 
  percentage 
  of 
  magnetite 
  nearly 
  always 
  

   present 
  in 
  this 
  rock. 
  No 
  analyses 
  of 
  the 
  ore 
  have 
  been 
  obtainable 
  ; 
  

   the 
  general 
  average 
  is 
  probably 
  about 
  that 
  given 
  for 
  the 
  Bowen 
  

   & 
  Signor 
  deposit. 
  

  

  Tremblay 
  mine. 
  This 
  deposit 
  is 
  situated 
  in 
  the 
  town 
  of 
  Saranac 
  

   2 
  miles 
  west 
  of 
  Clayburg. 
  The 
  workings 
  which 
  consist 
  of 
  one 
  or 
  

   more 
  pits 
  are 
  now 
  filled 
  with 
  water 
  so 
  that 
  neither 
  the 
  deposit 
  nor 
  

   the 
  walls 
  can 
  be 
  seen. 
  Putnam 
  has 
  recorded 
  that 
  in 
  1880 
  the 
  

   main 
  pit 
  was 
  from 
  150 
  to 
  200 
  feet 
  long 
  and 
  75 
  feet 
  deep. 
  Little 
  

   work 
  was 
  done 
  after 
  that 
  date. 
  The 
  analyses 
  of 
  ore 
  (1) 
  and 
  con- 
  

   centrates 
  (2) 
  are 
  quoted 
  from 
  his 
  report. 
  

  

  Iron 
  28.62 
  65.01 
  

  

  Phosphorus 
  .017 
  .004 
  

  

  ST 
  LAWRENCE 
  COUNTY 
  MINES 
  

  

  On 
  the 
  west 
  side 
  of 
  the 
  Adirondacks, 
  St 
  Lawrence 
  county 
  con- 
  

   tains 
  the 
  only 
  deposits 
  of 
  nontitaniferous 
  magnetites 
  that 
  have 
  

   been 
  extensively 
  mined. 
  The 
  principal 
  workings 
  are 
  at 
  Jayville, 
  

   Benson 
  Mines, 
  Fine 
  and 
  Clifton 
  in 
  the 
  southeastern 
  part, 
  near 
  the 
  

   headwaters 
  of 
  the 
  Grasse 
  and 
  Oswegatchie 
  rivers. 
  They 
  are 
  

   reached 
  most 
  readily 
  by 
  the 
  Carthage 
  & 
  Adirondack 
  Railroad, 
  

   which 
  affords 
  direct 
  communication 
  with 
  Lake 
  Ontario 
  at 
  Sacketts 
  

   Harbor 
  and 
  crosses 
  the 
  main 
  railway 
  lines 
  at 
  Watertown 
  and 
  

   Carthage. 
  The 
  accompanying 
  sketch 
  map 
  [fig. 
  21] 
  gives 
  the 
  loca- 
  

   tion 
  of 
  the 
  larger 
  deposits. 
  

  

  The 
  deposits 
  were 
  discovered 
  many 
  years 
  ago. 
  Some 
  of 
  them 
  

   are 
  mentioned 
  by 
  Emmons 
  who 
  did 
  not, 
  however, 
  consider 
  them 
  

   as 
  available 
  resources 
  at 
  the 
  time 
  owing 
  to 
  their 
  remote 
  situation. 
  

   On 
  that 
  account 
  they 
  received 
  little 
  attention 
  from 
  the 
  early 
  iron 
  

   manufacturers. 
  of 
  St 
  Lawrence 
  county. 
  Most 
  of 
  the 
  ore 
  used 
  in 
  the 
  

   old 
  furnaces 
  came 
  from 
  the 
  hematite 
  deposits 
  around 
  Gouverneur 
  

   and 
  Antwerp. 
  The 
  region 
  about 
  the 
  mines 
  is 
  largely 
  wilderness 
  

   with 
  few 
  beaten 
  routes 
  of 
  travel. 
  

  

  General 
  geology 
  

  

  The 
  Adirondacks 
  fall 
  by 
  gradual 
  stages 
  toward 
  the 
  St 
  Lawrence 
  

   plain. 
  The 
  surface 
  in 
  this 
  section 
  has 
  a 
  mean 
  elevation 
  of 
  from 
  

  

  