﻿ADIRONDACK 
  MAGNETIC 
  IRON 
  ORES 
  43 
  

  

  tion 
  northward 
  of 
  the 
  high 
  ridge 
  separating 
  Lake 
  George 
  and 
  

   Lake 
  Champlain. 
  It 
  is 
  made 
  up 
  of 
  a 
  greenish 
  slightly 
  gneissoid 
  

   rock 
  which 
  has 
  been 
  described 
  as 
  containing 
  microperthite, 
  augite, 
  

   hypersthene, 
  hornblende 
  and 
  quartz, 
  a 
  composition 
  that 
  plainly 
  

   establishes 
  relationship 
  with 
  the 
  augite 
  syenites. 
  1 
  The 
  mountain 
  

   thus 
  represents 
  without 
  doubt 
  an 
  igneous 
  knob 
  that 
  has 
  been 
  

   intruded 
  in 
  the 
  surrounding 
  gneisses 
  which 
  are 
  mainly 
  sedimentary. 
  

   The 
  ore 
  body 
  occurs 
  near 
  the 
  base 
  of 
  the 
  mountain 
  occupying 
  a 
  

   vertical 
  fissure 
  with 
  a 
  strike 
  n. 
  70 
  w. 
  The 
  walls 
  on 
  either 
  side 
  

   are 
  brecciated, 
  and 
  there 
  has 
  probably 
  been 
  more 
  or 
  less 
  displace- 
  

   ment 
  though 
  of 
  uncertain 
  extent. 
  Close 
  to 
  the 
  fissure 
  the 
  rock 
  is 
  

   mashed, 
  altered 
  to 
  a 
  greenish 
  material 
  which 
  seems 
  to 
  be 
  mainly 
  

   chlorite, 
  and 
  impregnated 
  with 
  hematite. 
  There 
  is 
  every 
  reason 
  

   for 
  believing 
  that 
  the 
  ore 
  has 
  been 
  introduced 
  by 
  circulation 
  of 
  

   underground 
  waters 
  subsequent 
  to 
  the 
  formation 
  of 
  the 
  fissure. 
  

   It 
  is 
  plainly 
  not 
  an 
  altered 
  magnetite 
  band. 
  The 
  hematite 
  is 
  

   principally 
  a 
  soft 
  amorphous 
  variety, 
  with 
  occasionally 
  some 
  

   masses 
  of 
  specular; 
  it 
  is 
  mixed 
  with 
  calcite 
  and 
  milky 
  quartz. 
  

   The 
  deposit 
  as 
  seen 
  from 
  the 
  surface 
  ranges 
  up 
  to 
  5 
  feet 
  wide. 
  

   It 
  has 
  been 
  worked 
  through 
  a 
  drift 
  which 
  enters 
  the 
  hill 
  a 
  short 
  

   distance 
  above 
  the 
  base. 
  Smock 
  states 
  that 
  a 
  pit 
  was 
  also 
  sunk, 
  

   but 
  as 
  the 
  workings 
  are 
  full 
  of 
  water 
  this 
  can 
  not 
  now 
  be 
  seen. 
  

   He 
  further 
  states 
  that 
  8 
  feet 
  of 
  ore 
  were 
  encountered. 
  Apparently 
  

   the 
  vein 
  has 
  been 
  developed 
  quite 
  extensively 
  for 
  it 
  is 
  referred 
  

   to 
  by 
  Watson 
  2 
  who 
  says 
  that 
  1500 
  tons 
  had 
  been 
  taken 
  out 
  in 
  the 
  

   early 
  operations. 
  It 
  was 
  again 
  mined 
  in 
  1888 
  and 
  ore 
  shipped 
  to 
  

   Port 
  Henry. 
  Preparations 
  were 
  under 
  way 
  in 
  1905 
  for 
  again 
  

   reopening 
  it, 
  but 
  after 
  starting 
  an 
  adit 
  at 
  the 
  base 
  of 
  the 
  hill 
  the 
  

   work 
  was 
  abandoned. 
  

  

  HAMMONDVILLE 
  MINE 
  GROUP 
  

  

  The 
  Hammondville 
  mines 
  are 
  in 
  the 
  western 
  part 
  of 
  Crown 
  Point 
  

   township, 
  Essex 
  co., 
  13 
  miles 
  west 
  of 
  Crown 
  Point 
  village 
  on 
  Lake 
  

   Champlain 
  and 
  15 
  miles 
  south 
  of 
  the 
  Mineville 
  district. 
  They 
  

   occupy 
  a 
  limited 
  area 
  that 
  centers 
  around 
  the 
  former 
  settlement 
  of 
  

   Hammondville. 
  Though 
  mostly 
  of 
  small 
  size 
  they 
  have 
  furnished 
  

   in 
  the 
  aggregate 
  nearly 
  2,000,000 
  tons 
  of 
  ore 
  (chiefly 
  Bessemer) 
  

   with 
  an 
  average 
  of 
  about 
  50 
  per 
  cent 
  iron. 
  

  

  t 
  J. 
  F. 
  Kenp 
  & 
  D. 
  H. 
  Newlaai. 
  Preliminary 
  Report 
  on 
  the 
  Geology 
  of 
  

   Washington, 
  Warren 
  and 
  Parts 
  of 
  Essex 
  and 
  Hamilton 
  Counties. 
  N. 
  Y 
  

   State 
  Mus. 
  Rep't 
  51. 
  1899. 
  2:512. 
  

   2 
  History 
  of 
  Essex 
  County, 
  p. 
  385. 
  

  

  