﻿H. 
  E. 
  Gregory 
  — 
  Andesites 
  from 
  Maine. 
  

  

  365 
  

  

  I 
  

  

  SiO, 
  61-40 
  

  

  AlA 
  16-59 
  

  

  Fe,03 
  -- 
  2-13 
  

  

  FeO 
  3-05 
  

  

  MgO 
  2-73 
  

  

  CaO.. 
  - 
  6-17 
  

  

  Na,0 
  ._ 
  3-83 
  

  

  K,0 
  _ 
  1-34 
  

  

  HP-105°... 
  -82 
  

  

  H,O 
  + 
  105° 
  ... 
  -88 
  

  

  TiO, 
  -79 
  

  

  ZrO^ 
  none 
  

  

  Cr^Og 
  _ 
  - 
  - 
  trace 
  

  

  VA 
  -02 
  

  

  NiO 
  trace 
  

  

  MnO 
  -13 
  

  

  BaO 
  -02 
  

  

  SrO 
  - 
  - 
  trace 
  

  

  1a 
  fi 
  trace 
  

  

  P,0, 
  -20 
  

  

  CO2 
  .- 
  none 
  

  

  CI 
  - 
  ? 
  

  

  Fl 
  _ 
  ? 
  

  

  FeS^ 
  none 
  

  

  II 
  

  

  III 
  

  

  lY 
  

  

  Y 
  

  

  YI 
  

  

  YII 
  

  

  61-58 
  

  

  61-29 
  

  

  61-04 
  

  

  61-45 
  

  

  61-17 
  

  

  63-25 
  

  

  16-96 
  

  

  17-68 
  

  

  15-72 
  

  

  15-07 
  

  

  17-74 
  

  

  14-89 
  

  

  1-75 
  

  

  6-03 
  

  

  5-03 
  

  

  4-46 
  

  

  1-78 
  

  

  6-54 
  

  

  2-85 
  

  

  •30 
  

  

  2-15 
  

  

  1-18 
  

  

  3-51 
  

  

  none 
  

  

  3-67 
  

  

  2-45 
  

  

  3-61 
  

  

  3-02 
  

  

  2-76 
  

  

  •82 
  

  

  6-28 
  

  

  5-61 
  

  

  5-34 
  

  

  5^37 
  

  

  5-90 
  

  

  •59 
  

  

  3-94 
  

  

  4-28 
  

  

  4-02 
  

  

  4-00 
  

  

  3-79 
  

  

  4-47 
  

  

  1-28 
  

  

  1-38 
  

  

  2-66 
  

  

  1-22 
  

  

  1-71 
  

  

  4-78 
  

  

  •24 
  

   1-06 
  

  

  •96 
  

  

  •58 
  

  

  1-23 
  

  

  -83 
  

  

  2 
  67 
  

  

  •49 
  

  

  •65 
  

  

  

  

  •45 
  

  

  trace 
  

  

  trace 
  

  

  •03 
  

  

  ? 
  trace 
  

  

  trace 
  

  

  •90 
  

  

  none 
  

  

  none 
  

  

  •12 
  

   -06 
  

   -C4 
  

  

  

  •05 
  

  

  trace 
  

  

  

  trace 
  

  

  •14 
  

  

  •61 
  

  

  •78 
  

  

  SO 
  > 
  

  

  

  

  3 
  

  

  

  loss 
  

  

  -29 
  , 
  

  

  

  -53 
  

  

  100-10 
  99-23 
  100-63 
  100-15 
  100-14 
  100-00 
  99-93 
  

  

  I. 
  Andesite, 
  Edmund's 
  Hill, 
  Aroostook 
  Co., 
  Maine. 
  Analysis 
  

  

  by 
  W. 
  F. 
  Hillebrand. 
  

   II. 
  Hornblende 
  andesite, 
  Mt. 
  Shasta, 
  Cal. 
  Analysis 
  by 
  N. 
  H. 
  

  

  Stokes, 
  Bui. 
  U. 
  S. 
  Geol. 
  Survey, 
  148, 
  p. 
  190. 
  

   HI. 
  Hornblende 
  dacite, 
  Anzeion, 
  uFlgina. 
  Analysis 
  Dr. 
  A. 
  

  

  Rohrig, 
  H. 
  S. 
  Washington, 
  Jour, 
  of 
  Geol., 
  vol. 
  iii, 
  p. 
  150. 
  

   lY. 
  Pyroxene 
  andesite, 
  Penon 
  de 
  Pitayo, 
  United 
  States 
  of 
  

   Columbia. 
  Kuch 
  : 
  Geol. 
  Studien 
  in 
  der 
  Republik 
  Colom- 
  

   bia, 
  Pt. 
  I. 
  Berlin, 
  1892. 
  

   V. 
  Pyroxene 
  andesite, 
  Agate 
  Creek, 
  Yellowstone 
  National 
  

   Park. 
  Analysis 
  by 
  Whitfield, 
  U. 
  S. 
  Geol. 
  Survey, 
  Bui. 
  

   148, 
  p. 
  134. 
  

   YI. 
  Hypersthene 
  andesite. 
  Crater 
  Peak 
  (Lassen 
  Peak 
  Region). 
  

   Analysis 
  by 
  W. 
  F. 
  Hillebrand. 
  U. 
  S. 
  Geol. 
  Survey, 
  Bui. 
  

   148, 
  p. 
  197. 
  

   YII. 
  ? 
  Andesite, 
  Fox 
  Islands, 
  Maine. 
  Analyses 
  by 
  E. 
  W. 
  

   Magruder 
  and 
  W. 
  A. 
  Jones 
  in 
  Johns 
  Hopkins 
  IJniversity 
  

   Laboratory. 
  G. 
  O. 
  Smith, 
  Geol. 
  of 
  Fox 
  Islands, 
  Maine. 
  

   Presented 
  as 
  a 
  thesis, 
  Johns 
  Hopkins 
  University, 
  1896. 
  

  

  