﻿28 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  magma 
  crystallized 
  in 
  place, 
  since 
  it 
  shows 
  little 
  resemblance 
  in 
  

   form 
  to 
  a 
  dike 
  cutting 
  the 
  gneiss 
  intrusively 
  or 
  to 
  a 
  vein 
  occupying 
  

   a 
  fissure. 
  It 
  constitutes 
  a 
  mass 
  that 
  is 
  traceable 
  for 
  several 
  hundred 
  

   feet 
  along 
  the 
  strike 
  and 
  across 
  the 
  dip 
  of 
  the 
  gneiss, 
  and 
  is 
  as 
  yet 
  

   only 
  partially 
  explored. 
  The 
  quarry 
  is 
  situated 
  near 
  the 
  eastern 
  

   face 
  of 
  the 
  ridge 
  known 
  as 
  Breed's 
  hill, 
  rj£ 
  miles 
  south 
  of 
  Crown 
  

   Point 
  and 
  y$ 
  mile 
  west 
  of 
  the 
  Delaware 
  & 
  Hudson 
  Railroad. 
  A 
  large 
  

   mill 
  has 
  been 
  erected 
  close 
  to 
  the 
  railroad, 
  where 
  the 
  rock 
  is 
  con- 
  

   veyed 
  by 
  a 
  cableway. 
  The 
  mill 
  equipment 
  is 
  very 
  complete 
  and 
  will 
  

   enable 
  the 
  company 
  to 
  supply 
  feldspar 
  in 
  any 
  of 
  the 
  forms 
  in 
  which 
  

   it 
  is 
  marketed. 
  The 
  pegmatite 
  is 
  an 
  intergrowth 
  of 
  potash 
  feldspar 
  

   and 
  quartz 
  with 
  a 
  little 
  mica 
  and 
  tourmalin. 
  The 
  separation 
  of 
  the 
  

   minerals 
  is 
  effected 
  entirely 
  by 
  mechanical 
  means 
  after 
  crushing, 
  

   whereas 
  in 
  other 
  quarries 
  the 
  removal 
  of 
  the 
  quartz 
  and 
  iron-bearing 
  

   impurities 
  is 
  performed 
  by 
  hand 
  cobbing. 
  The 
  feldspar 
  belongs 
  

   to 
  the 
  variety 
  known 
  as 
  microcline, 
  which 
  has 
  the 
  same 
  chemical 
  

   composition 
  as 
  orthoclase, 
  but 
  differs 
  in 
  its 
  crystallization. 
  

  

  GARNET 
  

  

  The 
  abrasive 
  garnet 
  industry 
  in 
  the 
  Adirondacks 
  continued 
  to 
  

   progress 
  during 
  1907, 
  as 
  shown 
  by 
  the 
  output 
  which 
  exceeded 
  

   all 
  previous 
  records, 
  having 
  been 
  about 
  20 
  per 
  cent 
  larger 
  than 
  

   that 
  for 
  the 
  preceding 
  year. 
  There 
  were 
  no 
  new 
  discoveries, 
  

   and 
  mining 
  has 
  been 
  restricted 
  to 
  the 
  usual 
  localities. 
  

  

  The 
  North 
  River 
  Garnet 
  Co., 
  owning 
  property 
  at 
  Thirteenth 
  

   lake, 
  Warren 
  co., 
  is 
  the 
  largest 
  operator 
  in 
  the 
  region. 
  The 
  

   company 
  has 
  an 
  unlimited 
  supply 
  of 
  garnet 
  rock 
  which 
  is 
  

   obtained 
  by 
  open 
  quarry 
  work. 
  The 
  rock 
  face 
  now 
  exposed 
  

   measures 
  142 
  feet 
  in 
  hight, 
  while 
  there 
  is 
  known 
  to 
  be 
  an 
  exten- 
  

   sive 
  body 
  below 
  the 
  level 
  of 
  the 
  present 
  workings. 
  The 
  material 
  

   is 
  crushed 
  and 
  concentrated 
  mechanically 
  by 
  a 
  process 
  specially 
  

   planned 
  for 
  the 
  purpose 
  by 
  Mr 
  F. 
  C. 
  Hooper. 
  By 
  the 
  addition 
  

   of 
  another 
  unit 
  to 
  the 
  mill, 
  the 
  productive 
  capacity 
  has 
  been 
  

   raised 
  to 
  about 
  8000 
  or 
  9000 
  tons 
  annually, 
  which 
  is 
  considerably 
  

   in 
  excess 
  of 
  the 
  present 
  market 
  requirements 
  of 
  the 
  country. 
  

  

  The 
  Gore 
  mountain 
  and 
  Garnet 
  peak 
  properties 
  near 
  North 
  

   River 
  are 
  worked 
  during 
  the 
  open 
  season, 
  the 
  former 
  by 
  H. 
  H. 
  

   Barton 
  & 
  Sons 
  Co., 
  and 
  the 
  latter 
  by 
  the 
  American 
  Glue 
  Co. 
  

   The 
  garnet 
  occurs 
  in 
  both 
  places 
  as 
  large 
  crystal 
  masses 
  in 
  a 
  

   hornblende 
  gneiss. 
  It 
  is 
  separated 
  by 
  hand 
  cobbing. 
  

  

  On 
  the 
  slopes 
  of 
  Mt 
  Bigelow 
  in 
  northern 
  Essex 
  co., 
  about 
  

  

  