﻿ADIRONDACK 
  MAGNETIC 
  IRON 
  ORES 
  l6l 
  

  

  which 
  outcrops 
  just 
  south 
  of 
  Big 
  island 
  as 
  indicated 
  on 
  the 
  map. 
  

   The 
  latter 
  is 
  thus 
  probably 
  an 
  extension 
  of 
  the 
  Sanford, 
  the 
  two 
  

   being 
  connected 
  by 
  a 
  belt 
  beneath 
  the 
  lake. 
  

  

  The 
  Sanford 
  deposit 
  is 
  conveniently 
  situated 
  for 
  working, 
  and 
  a 
  

   quantity 
  of 
  ore 
  that 
  is 
  not 
  subject 
  to 
  careful 
  estimate 
  but 
  which 
  

   must 
  amount 
  to 
  several 
  millions 
  of 
  tons 
  can 
  be 
  removed 
  by 
  ordinary 
  

   quarry 
  methods 
  before 
  reaching 
  the 
  level 
  of 
  the 
  adjacent 
  lake. 
  

   Its 
  position 
  directly 
  in 
  the 
  valley 
  will 
  facilitate 
  transportation 
  

   when 
  once 
  the 
  district 
  is 
  provided 
  with 
  railroad 
  communication. 
  

   In 
  quality 
  the 
  ore 
  is 
  above 
  the 
  average 
  of 
  the 
  district. 
  Except 
  

   for 
  admixture 
  with 
  feldspar 
  it 
  is 
  nearly 
  a 
  pure 
  aggregate 
  of 
  iron 
  

   minerals. 
  The 
  feldspar 
  is 
  segregated 
  to 
  a 
  great 
  extent 
  along 
  

   certain 
  bands, 
  though 
  it 
  occurs 
  in 
  smaller 
  amount 
  all 
  through 
  the 
  

   mass. 
  The 
  separation 
  of 
  the 
  rich 
  ore 
  from 
  the 
  admixed 
  ore 
  and 
  

   rock 
  could 
  be 
  performed 
  without 
  much 
  difficulty 
  during 
  the 
  quarry 
  

   operations. 
  

  

  The 
  Cheney 
  deposit 
  lies 
  about 
  a 
  mile 
  west 
  of 
  Lake 
  Sanford, 
  and 
  

   has 
  apparently 
  no 
  connection 
  with 
  the 
  Sanford 
  body. 
  It 
  is 
  known 
  

   to 
  be 
  of 
  large 
  size, 
  though 
  it 
  has 
  been 
  little 
  explored. 
  In 
  one 
  place 
  

   a 
  pit 
  of 
  some 
  20 
  feet 
  deep 
  has 
  been 
  opened. 
  Professor 
  Kemp 
  has 
  

   described 
  the 
  occurrence 
  as 
  follows 
  : 
  ' 
  ' 
  The 
  wall 
  rock 
  is 
  a 
  gabbro- 
  

   gneiss 
  as 
  already 
  stated, 
  and 
  the 
  ore 
  contains 
  more 
  sulfur 
  and 
  

   phosphorus 
  than 
  do 
  the 
  others 
  in 
  the 
  anorthosites. 
  It 
  emits 
  a 
  

   sulfurous 
  odor 
  when 
  broken 
  with 
  the 
  hammer. 
  In 
  thin 
  sections 
  

   it 
  is 
  seen 
  to 
  be 
  lean. 
  Apatite 
  is 
  abundant, 
  and 
  brown 
  hornblende, 
  

   red 
  brown 
  biotite, 
  chloritized 
  augite, 
  and 
  some 
  plagioclase 
  make 
  

   up 
  a 
  large 
  part 
  of 
  the 
  aggregate." 
  The 
  ore 
  is 
  at 
  times 
  quite 
  rich, 
  

   but 
  its 
  average 
  is 
  not 
  as 
  high 
  as 
  the 
  Sanford 
  ore. 
  

  

  About 
  2 
  miles 
  north 
  of 
  the 
  Sanford 
  deposit, 
  on 
  its 
  line 
  of 
  strike, 
  

   there 
  is 
  an 
  exposure 
  of 
  fine 
  grained 
  ore 
  which 
  is 
  mentioned 
  by 
  

   Emmons 
  as 
  a 
  probable 
  continuation 
  of 
  that 
  deposit. 
  There 
  is 
  said 
  

   to 
  be 
  a 
  nearly 
  continuous 
  line 
  of 
  magnetic 
  attraction 
  between 
  the 
  

   two. 
  An 
  opening 
  has 
  been 
  made 
  well 
  up 
  on 
  the 
  side 
  of 
  Mt 
  Adams. 
  

   In 
  addition 
  to 
  plagioclase 
  the 
  ore, 
  according 
  to 
  Kemp, 
  contains 
  

   some 
  spinel. 
  

  

  In 
  the 
  vicinity 
  of 
  the 
  Tahawus 
  Club 
  and 
  north 
  and 
  w 
  T 
  est 
  of 
  there 
  

   towards 
  Lake 
  Henderson, 
  there 
  is 
  a 
  complex 
  of 
  deposits 
  forming 
  an 
  

   almost 
  connected 
  series 
  distributed 
  over 
  an 
  area 
  of 
  perhaps 
  a 
  

   square 
  mile. 
  Ore 
  shows 
  on 
  both 
  sides 
  of. 
  the 
  river 
  near 
  the 
  outlet 
  

   of 
  Calamity 
  brook, 
  and 
  on 
  the 
  west 
  side 
  is 
  the 
  Millpond 
  opening 
  

   from 
  which 
  most 
  of 
  the 
  ore 
  in 
  the 
  early 
  days 
  was 
  taken 
  to 
  supply 
  

   the 
  furnace. 
  This 
  pit 
  is 
  about 
  100 
  feet 
  long 
  and 
  from 
  10 
  to 
  40 
  feet 
  

   wide, 
  the 
  walls 
  are 
  like 
  those 
  of 
  the 
  Sanford 
  deposit 
  and 
  the 
  iron 
  

  

  