﻿1 
  66 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  this 
  locality, 
  is 
  the 
  presence 
  of 
  a 
  greenish 
  glass 
  which 
  forms 
  

   veinlets 
  and 
  incrustations 
  of 
  microscopic 
  size, 
  with 
  inclusions 
  of 
  

   feldspar 
  and 
  magnetite. 
  

  

  The 
  ore 
  has 
  a 
  fine 
  grain 
  and 
  is 
  exceedingly 
  hard 
  and 
  tough. 
  

   When 
  observed 
  in 
  hand 
  specimens 
  the 
  general 
  run 
  seems 
  to 
  be 
  

   fairly 
  rich, 
  but 
  closer 
  examination 
  shows, 
  even 
  in 
  the 
  richest 
  

   material, 
  that 
  there 
  is 
  a 
  considerable 
  proportion 
  of 
  gangue 
  minerals, 
  

   The 
  latter 
  are 
  distributed 
  in 
  small 
  particles 
  through 
  the 
  magnetite 
  

   in 
  such 
  a 
  manner 
  that 
  it 
  would 
  prove 
  difficult 
  to 
  make 
  a 
  satisfactory 
  

   separation 
  of 
  the 
  material 
  for 
  commercial 
  purposes. 
  

  

  The 
  following 
  analyses, 
  of 
  which 
  No. 
  i 
  is 
  by 
  W. 
  F. 
  Hillebrand 
  

   and 
  No. 
  2 
  by 
  George 
  W. 
  Maynard, 
  give 
  the 
  composition 
  of 
  the 
  ore. 
  

  

  1 
  2 
  

  

  Fe 
  2 
  3 
  15.85 
  38.43 
  

  

  FeO 
  27 
  . 
  94 
  23 
  . 
  40 
  

  

  Si0 
  2 
  !7-9o 
  16.46 
  

  

  Ti0 
  2 
  15.66 
  14.70 
  

  

  O 
  2 
  3 
  51 
  

  

  A1 
  2 
  3 
  10.23 
  .34 
  

  

  MnO 
  tr. 
  .23 
  

  

  CaO 
  2.86 
  3.54 
  

  

  MgO 
  6.04 
  2.13 
  

  

  PA 
  04 
  

  

  V 
  2 
  s 
  55 
  

  

  C0 
  2 
  10 
  

  

  S 
  14 
  

  

  H 
  2 
  1.33 
  

  

  99.15 
  99.23 
  

  

  Iron 
  32.82 
  32 
  . 
  59 
  

  

  Titanium 
  9 
  . 
  40 
  8.82 
  

  

  LINCOLN 
  POND 
  MINE 
  

  

  The 
  Lincoln 
  pond 
  mine, 
  locally 
  called 
  the 
  Kent 
  mine, 
  is 
  about 
  

   5 
  miles 
  northwest 
  of 
  Mineville, 
  not 
  far 
  from 
  the 
  highway 
  leading 
  

   to 
  Elizabethtown. 
  It 
  consists 
  of 
  a 
  pit 
  about 
  75 
  feet 
  long 
  by 
  15 
  

   feet 
  wide, 
  with 
  a 
  shaft 
  at 
  one 
  end 
  of 
  unknown 
  depth. 
  The 
  wall 
  

   rock 
  is 
  a 
  massive 
  hypersthene 
  gabbro, 
  carrying 
  more 
  or 
  less 
  garnet. 
  

   The 
  ore 
  has 
  the 
  usual 
  character 
  of 
  the 
  magnetites 
  found 
  in 
  this 
  

  

  