﻿Report 
  oi 
  the 
  State 
  Geologist. 
  649 
  

  

  due 
  to 
  a 
  dam 
  of 
  drift. 
  We 
  have 
  not 
  examined 
  this 
  carefully, 
  but 
  

   in 
  the 
  Ticonderoga 
  river, 
  much 
  of 
  the 
  descent 
  is 
  over 
  rocky 
  

   ledges, 
  so 
  that 
  drift 
  is 
  not 
  the 
  sole 
  cause. 
  

  

  Mines. 
  — 
  There 
  are 
  two 
  openings 
  on 
  Buck 
  mountain, 
  but 
  both 
  

   have 
  been 
  long 
  shut 
  down 
  and 
  are 
  now 
  full 
  of 
  water. 
  Prof. 
  

   Smock 
  has 
  recorded 
  that 
  the 
  ore 
  strikes 
  north 
  thirty 
  degrees 
  east 
  

   and 
  dips 
  fifty- 
  two 
  degrees 
  northwest. 
  It 
  was 
  mined 
  to 
  a 
  depth 
  

   of 
  132 
  feet 
  with 
  an 
  average 
  thickness 
  of 
  sixteen 
  feet. 
  He 
  states 
  

   that 
  the 
  ore 
  yielded 
  54 
  per 
  cent 
  of 
  iron, 
  with 
  a 
  little 
  

   sulphide, 
  but 
  the 
  old 
  dumps 
  now 
  show 
  a 
  good 
  deal 
  of 
  

   the 
  latter. 
  The 
  operating 
  company 
  was 
  the 
  Lake 
  Champ- 
  

   lain 
  Ore 
  and 
  Transportation 
  Company, 
  but 
  the 
  mine 
  was 
  

   called 
  the 
  Yineyard. 
  Although 
  long 
  known, 
  it 
  was 
  opened 
  

   in 
  1887. 
  One 
  or 
  two 
  small 
  openings 
  are 
  strung 
  along 
  the 
  same 
  

   belt. 
  Prof. 
  Smock* 
  also 
  records 
  a 
  hematite 
  vein 
  eight 
  feet 
  wide 
  

   in 
  Mt. 
  Defiance, 
  on 
  the 
  Lake 
  Champlain 
  side. 
  This 
  was 
  opened 
  

   in 
  1888, 
  and 
  mined 
  to 
  a 
  small 
  extent. 
  In 
  the 
  present 
  condition 
  

   of 
  the 
  iron 
  business 
  there 
  is 
  little 
  chance 
  of 
  these 
  mines 
  resuming. 
  

  

  The 
  graphite 
  mines 
  have 
  already 
  been 
  mentioned. 
  Their 
  

   activity 
  ceased 
  many 
  years 
  ago. 
  There 
  is, 
  however, 
  a 
  graphite 
  

   mill 
  and 
  dressing 
  works 
  in 
  Ticonderoga, 
  which 
  purifies 
  the 
  pro- 
  

   duct 
  of 
  a 
  deposit 
  in 
  Hague 
  on 
  Lake 
  George. 
  Its 
  output 
  goes 
  to 
  

   the 
  Dixon 
  Crucible 
  Company. 
  

  

  Crown 
  Point. 
  

  

  Series 
  I. 
  The 
  Buck 
  Mountain 
  gneisses 
  extend 
  into 
  Crown 
  

   Point 
  as 
  two 
  tongues 
  separated 
  by 
  a 
  depression 
  which 
  is 
  filled 
  

   with 
  drift. 
  They 
  show 
  the 
  same 
  general 
  characters 
  as 
  in 
  

   Ticonderoga. 
  Pyroxene 
  gneisses 
  form 
  no 
  small 
  part 
  of 
  the 
  

   exposures. 
  Thus 
  a 
  red 
  massive 
  gneiss 
  (No. 
  8) 
  has 
  microperthitic 
  

   orthoclase, 
  quartz, 
  microcline, 
  plagioclase 
  and 
  emerald 
  green 
  

   pyroxene, 
  and 
  the 
  same 
  mixture 
  repeatedly 
  appears 
  elsewhere. 
  

   It 
  is 
  closely 
  involved 
  with 
  biotite-gneiss 
  (No. 
  10). 
  At 
  the 
  old 
  

   eupyrchroite 
  or 
  apatite 
  mine, 
  of 
  which 
  Emmons 
  in 
  1842 
  made 
  

   quite 
  extended 
  notes 
  (Nos. 
  11 
  and 
  28), 
  there 
  is 
  a 
  well-developed 
  

   crushed 
  and 
  faulted 
  strip. 
  The 
  mines 
  at 
  Hammondville 
  afford 
  

   fine 
  exposures 
  of 
  the 
  gneiss 
  in 
  the 
  southwestern 
  part 
  of 
  the 
  

   town. 
  It 
  is 
  an 
  extremely 
  acid 
  variety 
  and, 
  although 
  consisting 
  of 
  

  

  * 
  Bull. 
  7, 
  N. 
  T. 
  State 
  Museum, 
  June, 
  1889, 
  pp. 
  24-25. 
  

  

  