﻿ADIRONDACK 
  MAGNETIC 
  IRON 
  ORES 
  169 
  

  

  CaO 
  8.38 
  

  

  P 
  • 
  2.59 
  

  

  S 
  3-12 
  

  

  99.21 
  

  

  Iron 
  40.90 
  

  

  The 
  analysis 
  is 
  perhaps 
  of 
  questionable 
  accuracy 
  in 
  some 
  respects. 
  

   The 
  sulfur 
  is 
  certainly 
  all 
  combined 
  with 
  the 
  iron 
  to 
  form 
  bisulfid, 
  

   and 
  the 
  ferrous 
  and 
  ferric 
  oxids 
  can 
  hardly 
  be 
  present 
  in 
  the 
  exact 
  

   proportions 
  to 
  form 
  magnetite 
  when 
  there 
  is 
  such 
  a 
  large 
  amount 
  

   of 
  titanium 
  present 
  as 
  ilmenite. 
  That 
  the 
  determinations 
  of 
  iron 
  

   and 
  titanium 
  are 
  substantially 
  correct 
  as 
  to 
  bulk, 
  however, 
  has 
  

   been 
  confirmed 
  by 
  an 
  analysis 
  made 
  by 
  Prof. 
  E. 
  W. 
  Morley, 
  on 
  a 
  

   sample 
  gathered 
  recently 
  from 
  the 
  mine 
  dump. 
  The 
  analysis 
  

   gave: 
  Fe 
  50.79 
  per 
  cent; 
  Ti0 
  2 
  9.90 
  per 
  cent. 
  

  

  The 
  immediate 
  walls 
  of 
  the 
  deposit 
  are 
  not 
  in 
  evidence, 
  but 
  

   there 
  are 
  abundant 
  outcrops 
  in 
  the 
  vicinity, 
  all 
  of 
  quart 
  zose 
  gneisses. 
  

   The 
  latter 
  include 
  a 
  pink, 
  slightly 
  foliated 
  variety 
  and 
  a 
  grayish 
  

   garnetiferous 
  one. 
  Both 
  show 
  under 
  the 
  microscope 
  a 
  composition 
  

   that 
  allies 
  them 
  to 
  the 
  granites 
  and 
  granitic 
  gneisses 
  of 
  the 
  Adiron- 
  

   dacks. 
  The 
  feldspars 
  are 
  chiefly 
  microperthite 
  and 
  microcline, 
  

   though 
  there 
  may 
  be 
  a 
  little 
  acid 
  plagioclase 
  present. 
  Quartz 
  is 
  

   abundant. 
  The 
  dark 
  minerals 
  comprise 
  biotite 
  and 
  magnetite 
  

   and 
  a 
  chloritic 
  product 
  that 
  may 
  have 
  been 
  derived 
  from 
  augite. 
  

  

  The 
  ore 
  is 
  an 
  extremely 
  dense 
  hard 
  mass 
  in 
  which 
  the 
  magnetite 
  

   occurs 
  in 
  finely 
  divided 
  particles 
  intergrown 
  with 
  larger 
  grains 
  of 
  

   pyrite. 
  Biotite 
  and 
  garnet 
  are 
  also 
  present. 
  Some 
  specimens 
  

   taken 
  from 
  the 
  dump 
  at 
  the 
  shaft 
  show 
  inclusions 
  of 
  a 
  green 
  feld- 
  

   spar 
  rock 
  resembling 
  the 
  Adirondack 
  syenite 
  in 
  composition 
  and 
  

   appearance. 
  

  

  The 
  derivation 
  of 
  the 
  deposit 
  is 
  difficult 
  to 
  explain 
  except 
  that 
  

   it 
  may 
  be 
  related 
  to 
  some 
  underlying 
  magma 
  from 
  which 
  the 
  ore 
  

   body 
  represents 
  an 
  off 
  shot, 
  perhaps 
  intrusive 
  in 
  the 
  granitic 
  gneiss. 
  

   The 
  association 
  of 
  syenite 
  alluded 
  to 
  affords 
  evidence 
  of 
  the 
  exist- 
  

   ence 
  of 
  such 
  a 
  magma, 
  and 
  it 
  is 
  well 
  known 
  that 
  the 
  gabbros 
  and 
  

   syenites 
  and 
  the 
  granites 
  in 
  some 
  cases 
  as 
  well 
  grade 
  into 
  each 
  

   other 
  and 
  are 
  closely 
  connected 
  in 
  their 
  genesis. 
  

  

  OTHER 
  TITANIFEROUS 
  DEPOSITS 
  

   In 
  the 
  town 
  of 
  Westport, 
  about 
  2 
  miles 
  south 
  of 
  West 
  port 
  

   village, 
  several 
  pits 
  have 
  been 
  excavated 
  in 
  deposits 
  that 
  outcrop 
  

  

  