﻿ADIRONDACK 
  MAGNETIC 
  IRON 
  ORES 
  55 
  

  

  amounted 
  to 
  over 
  400,000 
  tons 
  so 
  that 
  the 
  entire 
  product 
  may 
  be 
  

   stated 
  in 
  round 
  numbers 
  at 
  2,000,000 
  tons. 
  

  

  Skiff 
  mine, 
  This 
  mine, 
  opened 
  by 
  the 
  Horicon 
  Iron 
  Co. 
  and 
  

   later 
  worked 
  by 
  the 
  Lake 
  Champlain 
  Ore 
  & 
  Transportation 
  Co., 
  is 
  

   near 
  the 
  east 
  end 
  of 
  Skiff 
  mountain 
  2 
  J 
  miles 
  southeast 
  of 
  Ham- 
  

   mond 
  ville. 
  It 
  is 
  about 
  500 
  feet 
  above 
  the 
  valley 
  of 
  Burnt 
  Mill 
  

   brook. 
  The 
  deposit 
  at 
  the 
  surface 
  ranges 
  from 
  3 
  to 
  6 
  feet 
  wide 
  

   thinning 
  at 
  either 
  end. 
  The 
  strike 
  is 
  n. 
  70 
  e. 
  and 
  the 
  dip 
  is 
  8o° 
  

   south. 
  Most 
  of 
  the 
  ore 
  has 
  evidently 
  been 
  taken 
  from 
  the 
  open 
  

   pit, 
  which 
  is 
  about 
  300 
  feet 
  long; 
  on 
  the 
  west 
  side 
  a 
  shaft 
  has 
  been 
  

   sunk, 
  but 
  its 
  depth 
  is 
  not 
  known. 
  The 
  ore 
  averages 
  fairly 
  rich, 
  

   probably 
  about 
  50 
  per 
  cent 
  iron. 
  Quartz 
  is 
  the 
  most 
  common 
  

   ingredient 
  of 
  the 
  magnetite. 
  The 
  wall 
  rock 
  resembles 
  that 
  sur- 
  

   rounding 
  the 
  Hammond 
  ville 
  deposits, 
  but 
  is 
  more 
  silicious 
  and 
  

   rather 
  coarser 
  in 
  texture. 
  

  

  The 
  analysis 
  below 
  is 
  quoted 
  from 
  Maynard's 
  paper. 
  (Maynard 
  

   and 
  Wendell, 
  analysts) 
  

  

  Fe 
  2 
  3 
  47.59 
  

  

  FeO 
  21.41 
  

  

  Si0 
  2 
  20.65 
  

  

  S 
  86 
  

  

  PA 
  18 
  

  

  A1 
  2 
  3 
  4.09 
  

  

  MnO 
  .27 
  

  

  CaO 
  • 
  4.06 
  

  

  MgO 
  1.08 
  

  

  100. 
  19 
  

  

  Iron 
  49 
  . 
  96 
  

  

  Phosphorus 
  .079 
  

  

  Manganese 
  .21 
  

  

  Long 
  Pond 
  mine. 
  This 
  is 
  nearly 
  opposite 
  the 
  Skiff 
  mine 
  on 
  a 
  

   parallel 
  deposit 
  which 
  outcrops 
  along 
  the 
  southern 
  slopes 
  of 
  the 
  

   ridge. 
  It 
  is 
  entered 
  from 
  the 
  surface 
  by 
  a 
  short 
  adit 
  driven 
  at 
  a 
  

   point 
  100 
  feet 
  below 
  the 
  outcrop. 
  The 
  ore 
  is 
  gathered 
  into 
  parallel 
  

   seams 
  separated 
  by 
  the 
  wall 
  rock 
  and 
  dipping 
  together 
  at 
  an 
  angle 
  

   of 
  6o° 
  south. 
  The 
  two 
  principal 
  seams 
  are 
  each 
  about 
  18 
  inches 
  

   thick. 
  A 
  second 
  adit 
  was 
  run 
  below 
  the 
  first 
  to 
  tap 
  the 
  deposit 
  at 
  

  

  