﻿126 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  furnished 
  much 
  of 
  the 
  building 
  material 
  for 
  local 
  use. 
  The 
  granite 
  

   consists 
  of 
  microperthite 
  and 
  quartz 
  and 
  is 
  rich 
  in 
  magnetite, 
  

   resembling 
  the 
  type 
  found 
  on 
  Birch 
  hill 
  near 
  Lyon 
  Mountain. 
  The 
  

   deposit 
  is 
  inclined 
  io° 
  to 
  the 
  west 
  and 
  has 
  been 
  worked 
  to 
  a 
  depth 
  

   of 
  about 
  ioo 
  feet. 
  The 
  main 
  openings 
  are 
  on 
  the 
  southern 
  portion, 
  

   where 
  there 
  is 
  an 
  open 
  pit 
  300 
  feet 
  long 
  and 
  10 
  to 
  30 
  feet 
  wide. 
  

   Several 
  hundred 
  feet 
  north 
  of 
  the 
  pit 
  a 
  shaft 
  was 
  sunk 
  in 
  the 
  hang- 
  

   ing 
  wall, 
  with 
  the 
  intention 
  of 
  mining 
  the 
  deposit, 
  but 
  the 
  shaft 
  was 
  

   abandoned 
  after 
  reaching 
  a 
  depth 
  of 
  100 
  feet. 
  A 
  drill 
  hole 
  put 
  

   down 
  near 
  the 
  shaft 
  is 
  said 
  to 
  have 
  found 
  ore 
  at 
  150 
  feet 
  from 
  the 
  

   surface. 
  The 
  ore 
  is 
  mostly 
  of 
  lean 
  character, 
  with 
  an 
  average 
  

   probably 
  of 
  not 
  more 
  than 
  35 
  per 
  cent 
  iron. 
  The 
  mine 
  was 
  opened 
  

   in 
  1842. 
  For 
  several 
  years 
  it 
  was 
  worked 
  by 
  the 
  State, 
  but 
  was 
  

   abandoned 
  with 
  the 
  discovery 
  of 
  the 
  Dannemora 
  mine 
  which 
  is 
  

   located 
  within 
  the 
  prison 
  grounds. 
  The 
  latter 
  mine 
  is 
  no 
  longer 
  

   accessible. 
  

  

  Ellis 
  mine. 
  This 
  is 
  situated 
  2 
  J 
  miles 
  northwest 
  of 
  Dannemora. 
  

   It 
  is 
  based 
  upon 
  an 
  ore 
  body 
  from 
  8 
  to 
  10 
  feet 
  wide 
  consisting 
  of 
  

   disseminated 
  magnetite 
  in 
  reddish 
  granitic 
  gneiss. 
  The 
  strike 
  is 
  

   about 
  north 
  and 
  south 
  and 
  the 
  dip 
  15 
  west. 
  The 
  pit 
  has 
  a 
  length 
  

   of 
  50 
  feet; 
  it 
  is 
  filled 
  with 
  water 
  so 
  that 
  the 
  extent 
  of 
  the 
  under- 
  

   ground 
  workings 
  can 
  not 
  be 
  ascertained. 
  Judging 
  from 
  the 
  small 
  

   amount 
  of 
  rock 
  on 
  the 
  dump, 
  the 
  mine 
  was 
  not 
  very 
  productive. 
  

  

  Fairbanks 
  mine. 
  The 
  Fairbanks 
  mine 
  is 
  about 
  2 
  miles 
  west 
  of 
  

   Dannemora. 
  It 
  was 
  opened 
  nearly 
  50 
  years 
  ago 
  and 
  worked 
  for 
  

   only 
  a 
  brief 
  period. 
  The 
  ore 
  is 
  from 
  3 
  to 
  5 
  feet 
  thick. 
  

  

  Bowen 
  & 
  Signor 
  mine. 
  This 
  is 
  located 
  on 
  a 
  belt 
  of 
  deposits 
  

   which 
  show 
  a 
  nearly 
  continuous 
  line 
  of 
  magnetic 
  attraction 
  extend- 
  

   ing 
  several 
  miles 
  along 
  the 
  Saranac 
  river 
  in 
  the 
  towns 
  of 
  Black 
  

   Brook 
  and 
  Saranac. 
  The 
  outcrops 
  are 
  concealed 
  for 
  most 
  of 
  the 
  

   distance 
  by 
  drift 
  and 
  river 
  sands, 
  but 
  the 
  horizon 
  of 
  the 
  ore 
  has 
  

   been 
  approximately 
  fixed 
  by 
  magnetic 
  measurements. 
  These 
  

   show 
  a 
  line 
  of 
  maximum 
  attraction 
  which 
  begins 
  1 
  mile 
  east 
  of 
  Red- 
  

   ford 
  and 
  runs 
  in 
  a 
  broad 
  curve 
  southwest 
  at 
  first 
  to 
  Clayburg 
  and 
  

   thence 
  westerly 
  and 
  northerly 
  to 
  a 
  point 
  on 
  Cold 
  brook 
  about 
  i| 
  

   miles 
  north 
  of 
  its 
  junction 
  with 
  the 
  Saranac. 
  The 
  principal 
  lines 
  

   of 
  magnetic, 
  attraction 
  are 
  indicated 
  on 
  the 
  accompanying 
  sketch 
  

   map 
  [fig. 
  20]. 
  

  

  The 
  Bowen 
  & 
  Signor 
  mine 
  lies 
  1 
  mile 
  south 
  of 
  Redford 
  on 
  a 
  drift- 
  

   covered 
  ridge 
  that 
  rises 
  from 
  the 
  south 
  bank 
  of 
  the 
  Saranac. 
  There 
  

   are 
  some 
  6 
  or 
  8 
  pits 
  and 
  shafts, 
  now 
  dismantled 
  and 
  filled 
  by 
  caving 
  

   of 
  surface 
  materials. 
  At 
  the 
  date 
  of 
  Putnam's 
  report 
  the 
  ore 
  had 
  

  

  