﻿Il6 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  tite, 
  feldspar 
  and 
  augite. 
  The 
  feldspar 
  is 
  mostly 
  oligoclase, 
  with 
  

   subordinate 
  orthoclase. 
  Incomplete 
  analyses 
  quoted 
  by 
  Putnam, 
  

   No. 
  i 
  from 
  a 
  sample 
  of 
  300 
  tons 
  crude 
  ore 
  and 
  No. 
  2 
  from 
  150 
  tons 
  

   concentrates, 
  show 
  the 
  following 
  percentages: 
  

  

  1 
  2 
  

  

  Iron 
  34.81 
  65.14 
  

  

  Titanic 
  acid 
  nil 
  pres. 
  

  

  Phosphorus 
  .041 
  .017 
  

  

  The 
  sulfur 
  was 
  not 
  estimated. 
  The 
  percentage 
  of 
  phosphorus 
  

   in 
  both 
  crude 
  ore 
  and 
  concentrates 
  is 
  somewhat 
  higher 
  than 
  the 
  

   average 
  obtained 
  from 
  present 
  operations 
  at 
  Lyon 
  Mountain, 
  yet 
  

   the 
  concentrates 
  are 
  superior 
  in 
  this 
  respect 
  to 
  most 
  Bessemer 
  

   ores. 
  Determinations 
  made 
  on 
  33 
  samples 
  of 
  drill 
  cores 
  taken 
  

   from 
  different 
  localities, 
  reported 
  by 
  Mr 
  H. 
  H. 
  Hindshaw, 
  gave 
  an 
  

   average 
  of 
  41.87 
  per 
  cent 
  iron 
  and 
  .025 
  per 
  cent 
  phosphorus. 
  

  

  Main 
  group 
  of 
  mines. 
  The 
  ore 
  deposits 
  now 
  under 
  operation 
  

   at 
  Lyon 
  Mountain 
  comprise 
  the 
  middle 
  section 
  of 
  the 
  belt 
  on 
  the 
  

   northwestern 
  slopes 
  of 
  the 
  high 
  ridge. 
  The 
  mean 
  elevation 
  of 
  the 
  

   outcrop 
  is 
  about 
  2000 
  feet 
  above 
  sea 
  level 
  and 
  300 
  feet 
  above 
  the 
  

   floor 
  of 
  the 
  adjoining 
  valley. 
  

  

  In 
  the 
  southern 
  portion 
  of 
  the 
  group 
  three 
  parallel 
  series 
  of 
  

   deposits 
  occur 
  and 
  are 
  known 
  locally 
  as 
  the 
  front 
  or 
  main 
  vein, 
  

   the 
  middle 
  vein 
  and 
  the 
  back 
  or 
  Dickson 
  vein. 
  The 
  main 
  vein 
  

   which 
  is 
  the 
  one 
  most 
  extensively 
  worked 
  has 
  been 
  proved 
  by 
  

   actual 
  development 
  to 
  constitute 
  a 
  continuous 
  ore 
  body 
  for 
  a 
  dis- 
  

   tance 
  of 
  about 
  2500 
  feet 
  and 
  its 
  further 
  continuity 
  indicated 
  by 
  

   test 
  pits 
  and 
  magnetic 
  determinations 
  for 
  an 
  additional 
  2000 
  feet. 
  

   The 
  back 
  vein 
  has 
  been 
  opened 
  only 
  on 
  the 
  southern 
  portion; 
  it 
  

   outcrops 
  parallel 
  to 
  the 
  main 
  vein 
  at 
  a 
  horizontal 
  distance 
  of 
  

   about 
  200 
  feet. 
  The 
  middle 
  vein 
  between 
  the 
  two 
  is 
  undeveloped 
  

   and 
  little 
  is 
  known 
  about 
  its 
  extent. 
  A 
  plan 
  of 
  the 
  surface 
  and 
  

   underground 
  workings 
  is 
  shown 
  in 
  figure 
  18. 
  

  

  It 
  is 
  only 
  in 
  the 
  extreme 
  southwestern 
  part 
  of 
  the 
  group 
  that 
  

   any 
  evidence 
  of 
  a 
  marked 
  structural 
  break 
  is 
  found. 
  For 
  most 
  of 
  

   the 
  distance 
  the 
  outcrop 
  follows 
  an 
  almost 
  straight 
  line 
  in 
  a 
  gen- 
  

   eral 
  direction 
  n. 
  20 
  e. 
  Near 
  shaft 
  5, 
  however, 
  a 
  rather 
  sharp 
  fold 
  

   enters 
  causing 
  the 
  outcrop 
  to 
  swing 
  around 
  to 
  nearly 
  west 
  and 
  this 
  

   direction 
  is 
  followed 
  for 
  the 
  remaining 
  distance 
  of 
  1000 
  feet 
  in 
  

   which 
  the 
  deposits 
  have 
  been 
  mined. 
  Beyond 
  the 
  Burden 
  open 
  

   cut 
  which 
  is 
  the 
  most 
  westerly 
  working 
  on 
  the 
  southern 
  wing 
  of 
  

   the 
  fold 
  the 
  continuation 
  of 
  the 
  ore 
  has 
  not 
  been 
  clearly 
  estab- 
  

  

  