﻿40 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  A 
  sample 
  stated 
  by 
  Putnam 
  to 
  have 
  been 
  taken 
  from 
  the 
  stock 
  

   pile 
  near 
  the 
  western 
  entrance 
  to 
  the 
  drift 
  gave: 
  

  

  Iron 
  36. 
  99 
  

  

  Phosphorus 
  .055 
  

  

  Titanium 
  nil 
  

  

  MINES 
  NEAR 
  CROWN 
  POINT 
  

  

  In 
  the 
  vicinity 
  of 
  Crown 
  Point 
  on 
  Lake 
  Champlain 
  and 
  west 
  of 
  

   there 
  toward 
  Hammondville 
  are 
  a 
  few 
  scattered 
  ore 
  bodies 
  that 
  

   have 
  received 
  attention 
  in 
  the 
  past, 
  principally 
  as 
  sources 
  of 
  supply 
  

   for 
  the 
  Crown 
  Point 
  furnace. 
  Among 
  them 
  are 
  the 
  Vineyard, 
  

   Butler, 
  Kent, 
  Breed 
  and 
  Hammond 
  mines, 
  besides 
  one 
  or 
  two 
  

   prospects. 
  The 
  Mt 
  Defiance 
  hematite 
  mine, 
  south 
  of 
  Fort 
  Ticon- 
  

   deroga, 
  may 
  also 
  be 
  included 
  among 
  the 
  number. 
  The 
  Crown 
  

   Point 
  furnace 
  has 
  not 
  been 
  operated 
  for 
  the 
  last 
  15 
  years 
  and 
  is 
  

   now 
  dismantled. 
  

  

  Geologically, 
  the 
  magnetites 
  of 
  this 
  area 
  show 
  striking 
  differences 
  

   from 
  the 
  Hammondville 
  group 
  which 
  lies 
  immediately 
  west 
  of 
  Crown 
  

   Point. 
  They 
  are 
  associated 
  with 
  banded 
  gneisses 
  and 
  schists 
  that 
  

   can 
  be 
  classed 
  without 
  reserve 
  in 
  the 
  sedimentary 
  or 
  Grenville 
  

   series. 
  They 
  have 
  a 
  simple 
  tabular 
  or 
  lenticular 
  form, 
  swelling 
  and 
  

   narrowing 
  to 
  some 
  extent 
  along 
  the 
  strike 
  and 
  dip, 
  but 
  otherwise 
  are 
  

   little 
  disturbed. 
  They 
  lie 
  conformable 
  to 
  the 
  foliation 
  of 
  the 
  walls, 
  

   which 
  is 
  plainly 
  marked. 
  In 
  their 
  mineral 
  composition 
  they 
  differ 
  

   from 
  the 
  Hammondville 
  ores 
  in 
  having 
  a 
  high 
  sulfur 
  content, 
  due 
  

   to 
  disseminated 
  pyrite 
  and, 
  in 
  most 
  cases, 
  a 
  higher 
  percentage 
  of 
  

   phosphorus 
  as 
  well. 
  Their 
  admixture 
  with 
  pyrite 
  was 
  a 
  serious 
  

   drawback 
  to 
  their 
  utilization, 
  since 
  there 
  were 
  no 
  mills 
  for 
  concen- 
  

   trating 
  the 
  ores 
  in 
  this 
  section. 
  

  

  The 
  Grenville 
  rocks 
  which 
  occur 
  near 
  the 
  ores 
  are 
  mostly 
  horn- 
  

   blende 
  and 
  biotite 
  quartzose 
  gneisses 
  with 
  occasional 
  intercala- 
  

   tions 
  of 
  thin 
  bedded 
  schists. 
  They 
  are 
  conspicuously 
  foliated 
  and 
  

   variable 
  in 
  their 
  composition 
  from 
  layer 
  to 
  layer. 
  Their 
  color 
  is 
  

   generally 
  gray, 
  from 
  light 
  to 
  dark 
  shades, 
  sometimes 
  almost 
  black. 
  

   Pyrite 
  is 
  a 
  common 
  ingredient, 
  while 
  graphite 
  is 
  not 
  wanting. 
  

   Crystalline 
  limestone 
  has 
  a 
  very 
  limited 
  distribution, 
  apparently, 
  

   in 
  this 
  area, 
  though 
  abundant 
  farther 
  west. 
  The 
  only 
  occurrence 
  

   observed 
  near 
  the 
  mines 
  is 
  at 
  the 
  old 
  eupyrchroite 
  locality 
  on 
  the 
  

   north 
  side 
  of 
  Breeds 
  hill, 
  just 
  south 
  of 
  Crown 
  Point 
  village, 
  and 
  

   here 
  it 
  is 
  confined 
  to 
  a 
  thin 
  bed 
  of 
  coarsely 
  crystalline 
  graphitic 
  

   material 
  associated 
  with 
  a 
  dense 
  quartzite. 
  

  

  