﻿ADIRONDACK 
  MAGNETIC 
  IRON 
  ORES 
  5 
  1 
  

  

  often 
  toward 
  the 
  south 
  compass 
  points 
  than 
  toward 
  the 
  north 
  

   points. 
  

  

  Most 
  of 
  the 
  deposits 
  proved 
  to 
  be 
  small 
  and 
  were 
  quickly 
  

   exhausted. 
  The 
  few 
  notable 
  ones 
  which 
  have 
  yielded 
  the 
  greater 
  

   part 
  of 
  the 
  output 
  for 
  the 
  district 
  include 
  the 
  Penfield, 
  the 
  adjoining 
  

   West 
  End, 
  the 
  Hammond, 
  Dog 
  Alley, 
  North 
  and 
  No. 
  7 
  mines. 
  

  

  The 
  Penfield 
  mine, 
  with 
  the 
  West 
  End, 
  in 
  the 
  central 
  part 
  of 
  the 
  

   ore 
  belt 
  may 
  be 
  ranked 
  among 
  the 
  largest 
  in 
  the 
  Adirondacks. 
  

   It 
  is 
  based 
  on 
  a 
  deposit 
  whose 
  outcrop 
  can 
  be 
  traced 
  for 
  1000 
  feet. 
  

   The 
  line 
  of 
  outcrop 
  forms 
  nearly 
  a 
  right 
  angle. 
  The 
  body 
  is 
  thus 
  

   divided 
  into 
  a 
  somewhat 
  longer 
  western 
  portion 
  which 
  strikes 
  

   northeast 
  and 
  an 
  eastern 
  portion 
  with 
  a 
  northwest 
  strike. 
  The 
  

   latter 
  consists 
  of 
  a 
  simple 
  tabular 
  bed 
  swelling 
  and 
  thinning 
  to 
  

   some 
  extent 
  and 
  dipping 
  15 
  or 
  more 
  to 
  the 
  northeast. 
  The 
  

   Ayers 
  pit 
  is 
  on 
  the 
  extreme 
  eastern 
  end, 
  across 
  the 
  Hammondville 
  

  

  Fig. 
  4 
  Section 
  across 
  the 
  Penfield 
  pit, 
  western 
  portion. 
  Pegmatite 
  developed 
  

   along 
  axis 
  of 
  the 
  fold 
  

  

  road. 
  The 
  central 
  and 
  western 
  portions 
  are 
  more 
  complex 
  in 
  

   form; 
  their 
  outcrop 
  lies 
  evidently 
  on 
  the 
  apex 
  of 
  an 
  anticlinal 
  

   from 
  which 
  the 
  ore 
  runs 
  off 
  to 
  the 
  southeast 
  and 
  northwest. 
  The 
  

   main 
  workings 
  are 
  on 
  the 
  northwest 
  wing 
  of 
  the 
  fold 
  following 
  a 
  

   dip 
  of 
  45 
  , 
  while 
  the 
  ore 
  to 
  the 
  southwest 
  pinches 
  out 
  rapidly 
  on 
  

   the 
  dip. 
  The 
  foot-wall 
  exposed 
  in 
  the 
  open 
  cut 
  along 
  the 
  axis 
  of 
  

   the 
  fold 
  consists 
  of 
  coarse 
  pegmatite. 
  The 
  accompanying 
  section 
  

   [fig. 
  4] 
  shows 
  the 
  relations 
  in 
  the 
  western 
  portion 
  of 
  the 
  deposit. 
  

  

  The 
  relations 
  of 
  the 
  West 
  End 
  and 
  Penfield 
  ore 
  bodies 
  are 
  not 
  

   certain 
  from 
  the 
  little 
  information 
  that 
  can 
  now 
  be 
  obtained 
  regard- 
  

   ing 
  the 
  workings. 
  The 
  former 
  seems 
  to 
  be 
  an 
  underlying 
  body 
  

   likewise 
  developed 
  as 
  an 
  anticlinal. 
  Smock 
  describes 
  it 
  in 
  the 
  

   following 
  words 
  : 
  ' 
  ' 
  The 
  West 
  End 
  is 
  on 
  the 
  normal 
  (southeast) 
  

   dip 
  of 
  the 
  Penfield 
  ore 
  body, 
  and 
  is 
  re'markable 
  for 
  its 
  irregular 
  

  

  