﻿Adirondack 
  magnetic 
  iron 
  ores 
  iol 
  

  

  the 
  pit 
  for 
  150 
  feet. 
  The 
  containing 
  rock 
  has 
  a 
  granitic 
  texture 
  and 
  

   in 
  other 
  respects 
  is 
  analogous 
  to 
  an 
  acid 
  intrusive. 
  

  

  Two 
  diabase 
  dikes, 
  each 
  about 
  15 
  feet 
  thick, 
  cut 
  the 
  ore. 
  One 
  

   of 
  these 
  runs 
  nearly 
  parallel 
  to 
  but 
  west 
  of 
  the 
  outcrop, 
  standing 
  

   as 
  a 
  vertical 
  wall 
  when 
  seen 
  underground. 
  It 
  sends 
  off 
  a 
  small 
  

   offshoot 
  from 
  the 
  eastern 
  end 
  but 
  holds 
  its 
  width 
  undiminished 
  

   so 
  far 
  as 
  it 
  can 
  be 
  traced. 
  The 
  second 
  dike 
  intersects 
  the 
  deposit 
  

   at 
  the 
  Big 
  pit, 
  crossing 
  at 
  an 
  oblique 
  angle 
  and 
  continuing 
  in 
  a 
  

   northerly 
  direction 
  over 
  the 
  summit 
  of 
  the 
  hill. 
  The 
  dikes 
  have 
  

   exerted 
  noticeable 
  contact 
  effects 
  upon 
  the 
  ore 
  in 
  the 
  development 
  

   of 
  a 
  black 
  garnet 
  (brown 
  in 
  thin 
  section), 
  which 
  has 
  been 
  formed 
  

   at 
  the 
  expense 
  of 
  the 
  magnetite 
  and 
  feldspar, 
  as 
  well 
  as 
  by 
  rendering 
  

   it 
  dense 
  and 
  exceedingly 
  hard. 
  A 
  considerable 
  quantity 
  of 
  the 
  

   garnetiferous 
  ore 
  can 
  be 
  found 
  on 
  the 
  w 
  T 
  aste 
  dumps, 
  having 
  proved 
  

   evidently 
  too 
  refractory 
  to 
  be 
  used. 
  

  

  Description 
  of 
  workings. 
  The 
  ore 
  body 
  has 
  been 
  excavated 
  for 
  

   a 
  long 
  distance 
  as 
  an 
  open 
  pit, 
  with 
  chambers 
  extending 
  down 
  the 
  

   dip 
  when 
  the 
  depth 
  became 
  too 
  great 
  for 
  removal 
  of 
  the 
  overlying 
  

   rock. 
  In 
  places 
  the 
  surface 
  workings 
  have 
  caved 
  and 
  are 
  inaccessible. 
  

   The 
  Elliot 
  slope 
  enters 
  the 
  hill 
  on 
  the 
  southwestern 
  side 
  at 
  a 
  little 
  

   over 
  900 
  feet 
  elevation. 
  It 
  pitches 
  nearly 
  north. 
  The 
  slope 
  w 
  r 
  as 
  

   the 
  last 
  one 
  opened 
  and 
  is 
  said 
  to 
  follow 
  a 
  shoot 
  of 
  ore 
  9 
  feet 
  thick. 
  

   The 
  adjoining 
  White 
  Flint 
  slope, 
  somewhat 
  higher 
  up, 
  also 
  pitches 
  

   north 
  at 
  an 
  angle 
  of 
  70 
  at 
  first, 
  but 
  flattens 
  downward; 
  it 
  is 
  bot- 
  

   tomed 
  at 
  1200 
  feet. 
  The 
  breast 
  of 
  ore, 
  judging 
  from 
  the 
  visible 
  

   part 
  of 
  the 
  excavation, 
  must 
  have 
  measured 
  about 
  20 
  feet. 
  The 
  

   ore 
  contains 
  a 
  good 
  deal 
  of 
  milky 
  quartz, 
  but 
  is 
  rich 
  compared 
  with 
  

   the 
  general 
  average. 
  Between 
  this 
  and 
  the 
  Big 
  pit 
  the 
  north-south 
  

   dike 
  intervenes 
  and 
  the 
  ore 
  body 
  swings 
  off 
  toward 
  the 
  east. 
  The 
  

   Big 
  pit 
  is 
  the 
  deepest 
  of 
  all, 
  2200 
  feet 
  on 
  the 
  dip 
  which 
  begins 
  at 
  

   6o° 
  and 
  is 
  nearly 
  horizontal 
  at 
  the 
  bottom. 
  The 
  Summit 
  pit 
  at 
  

   the 
  highest 
  point 
  of 
  outcrop 
  of 
  the 
  deposit 
  is 
  credited 
  with 
  a 
  depth 
  

   of 
  1000 
  feet 
  and 
  dips 
  about 
  30 
  . 
  Of 
  the 
  other 
  workings, 
  the 
  Little 
  

   pit, 
  opened 
  by 
  the 
  Peru 
  Steel 
  & 
  Iron 
  Co., 
  and 
  lying 
  near 
  the 
  eastern 
  

   end, 
  is 
  the 
  largest. 
  The 
  slope 
  has 
  a 
  length 
  of 
  1200 
  feet 
  and 
  follows 
  

   a 
  shoot 
  10 
  feet 
  thick 
  and 
  100 
  feet 
  wide 
  across 
  the 
  dip. 
  

  

  Character 
  of 
  the 
  ore. 
  In 
  texture 
  the 
  ore 
  is 
  rather 
  fine. 
  Its 
  

   appearance 
  and 
  mode 
  of 
  occurrence 
  is 
  much 
  like 
  the 
  Lyon 
  Mountain 
  

   ore. 
  The 
  gangue 
  consists 
  mostly 
  of 
  microcline, 
  orthoclase 
  and 
  

   quartz, 
  with 
  a 
  very 
  small 
  proportion 
  of 
  ferromagnesian 
  minerals 
  

   in 
  the 
  form 
  of 
  augite 
  and 
  biotite. 
  Phosphorus 
  and 
  sulfur 
  fall 
  within 
  

   the 
  Bessemer 
  limits. 
  The 
  chemical 
  composition 
  is 
  shown 
  by 
  the 
  

  

  