﻿24 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Si0 
  2 
  .. 
  

  

  A1 
  2 
  3 
  . 
  

   Fe.Os 
  . 
  

   FeO 
  .. 
  

   MgO 
  . 
  

   CaO 
  .. 
  

   Na 
  2 
  . 
  

   K.0 
  .. 
  

   H 
  2 
  0+- 
  

   H 
  2 
  — 
  

   Ti0 
  2 
  .. 
  

   P 
  2 
  0, 
  .. 
  

   CI 
  .... 
  

   F 
  .... 
  

  

  S 
  

  

  MnO 
  . 
  

   BaO 
  .. 
  

  

  I 
  

  

  2 
  

  

  3 
  

  

  4 
  

  

  5 
  

  

  72.41 
  

  

  73-33 
  

  

  73-io 
  

  

  70.13 
  

  

  1.207 
  

  

  13.85 
  

  

  13-55 
  

  

  14.29 
  

  

  15.47 
  

  

  .136 
  

  

  1. 
  13 
  

  

  ■58 
  

  

  1.04 
  

  

  1.52 
  

  

  .007 
  

  

  1-57 
  

  

  1-53 
  

  

  1.04 
  

  

  1.05 
  

  

  .022 
  

  

  • 
  45 
  

  

  • 
  45 
  

  

  •53 
  

  

  .85 
  

  

  .on 
  

  

  1.54 
  

  

  1.66 
  

  

  1. 
  18 
  

  

  1 
  .60 
  

  

  .028 
  

  

  4-31 
  

  

  5.01 
  

  

  3-o8 
  

  

  3-72 
  

  

  .069 
  

  

  3-68 
  

  

  3. 
  12 
  

  

  5.36 
  

  

  4-39 
  

  

  .040 
  

  

  •41 
  

  

  • 
  45 
  

  

  •54 
  

  

  .07 
  

  

  •48 
  

   x 
  .01 
  

  

  

  .44 
  

  

  •i/ 
  

  

  .18 
  

  

  •30 
  

  

  .005 
  

  

  .07 
  

  

  

  • 
  03 
  ■ 
  

  

  • 
  03 
  

  

  • 
  05 
  

  

  . 
  0005 
  

  

  .01 
  

  

  

  ;02 
  

  

  .09 
  

  

  .0005 
  

  

  .05 
  

  

  

  .02 
  

  

  .07 
  

  

  

  ■ 
  33 
  

  

  .04 
  

  

  .07 
  

  

  .08 
  

  

  .004 
  

  

  •03 
  

  

  

  

  •05 
  

  

  

  100.28 
  99.89 
  100.58 
  99.86 
  

  

  1 
  White 
  granite 
  (Laurentian?) 
  from 
  2 
  miles 
  north 
  of 
  Saratoga. 
  E. 
  W. 
  

   Morley, 
  analyst. 
  

  

  2 
  Laurentian 
  granite 
  gneiss 
  from 
  the 
  Methuen 
  bathylith 
  of 
  central 
  Ontario. 
  

   F. 
  D. 
  Adams, 
  Jour. 
  Geol., 
  17:17. 
  

  

  3 
  Laurentian 
  granite 
  gneiss 
  of 
  the 
  Alexandria 
  bathylith. 
  E. 
  W. 
  Morley, 
  

   analyst, 
  N. 
  Y. 
  State 
  Mus. 
  Bui. 
  145, 
  p. 
  176. 
  

  

  4 
  Laurentian 
  granite 
  gneiss 
  of 
  the 
  Antwerp 
  bathylith 
  of 
  northwestern 
  New 
  

   York, 
  granite 
  with 
  slight 
  amphibolite 
  contamination. 
  E. 
  W. 
  Morley, 
  analyst, 
  

   N. 
  Y. 
  State 
  Mus. 
  Bui. 
  145, 
  p. 
  176. 
  

  

  5 
  Molecular 
  ratios 
  of 
  analysis 
  no. 
  1. 
  

  

  A 
  comparison 
  of 
  the 
  four 
  analyses 
  given 
  brings 
  out 
  at 
  a 
  glance 
  

   the 
  practical 
  identity 
  of 
  the 
  Saratoga 
  rock 
  with 
  those 
  of 
  Ontario 
  

   and 
  northwestern 
  New 
  York. 
  They 
  differ 
  only 
  in 
  the 
  alkali 
  ratio, 
  

   soda 
  exceeding 
  potash 
  in 
  the 
  rock 
  from 
  Ontario, 
  and 
  the 
  reverse 
  

   being 
  true 
  in 
  that 
  from 
  northwestern 
  New 
  York. 
  In 
  this 
  respect 
  

   the 
  Saratoga 
  rock 
  is 
  more 
  like 
  that 
  from 
  Ontario, 
  though 
  occupying 
  

   an 
  intermediate 
  position. 
  That 
  this 
  would 
  be 
  the 
  case 
  was 
  indicated 
  

   in 
  the 
  thin 
  section, 
  oligoclase 
  being 
  much 
  more 
  abundant 
  and 
  

   microperthite 
  correspondingly 
  less 
  so 
  than 
  in 
  the 
  rocks 
  from 
  the 
  

   Thousand 
  Islands 
  region. 
  We 
  regard 
  the 
  chemical 
  evidence 
  as 
  

   strongly 
  corroborative 
  of 
  the 
  impression 
  gained 
  in 
  the 
  field 
  regard- 
  

   ing 
  the 
  igneous 
  nature 
  of 
  this 
  white 
  gneiss. 
  

  

  