﻿i 
  7 
  8 
  

  

  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Little 
  pit, 
  Palmer 
  hill 
  mines, 
  ioo, 
  101. 
  

  

  Little 
  pond 
  mines, 
  167-68. 
  

  

  Long 
  Lake 
  quadrangle, 
  report 
  on 
  

   geology 
  of, 
  11. 
  

  

  Long 
  Pond 
  mine, 
  44, 
  55-56. 
  

  

  Lovers 
  Hole, 
  84. 
  

  

  Lowville 
  formation, 
  19. 
  

  

  Lundrigan 
  pit, 
  Palmer 
  hill 
  mines, 
  

   100. 
  

  

  Lyon 
  mountain, 
  108; 
  geology, 
  108- 
  

   14; 
  magnetites, 
  16, 
  23, 
  25, 
  26; 
  

   igneous 
  series, 
  27. 
  

  

  Lyon 
  Mountain 
  mines, 
  33, 
  105-245 
  

   analyses, 
  120-22 
  ; 
  concentrating 
  

   plants, 
  34; 
  main 
  group, 
  1 
  16-18; 
  

   statistics 
  of 
  ore 
  production, 
  35, 
  

   124; 
  sketch 
  map 
  showing 
  distri- 
  

   bution 
  of 
  ore 
  bodies, 
  107; 
  vertical 
  

   section 
  across 
  ore 
  bodies, 
  119. 
  

  

  McCreath, 
  A. 
  S. 
  & 
  Son, 
  analysis 
  by, 
  

  

  154. 
  

  

  Mace 
  deposit, 
  90, 
  105. 
  

  

  Mclntyre, 
  A., 
  mentioned, 
  156. 
  

  

  McKenzie 
  brook, 
  59. 
  

  

  Magnesia, 
  45, 
  139. 
  

  

  Magnetic 
  concentration, 
  34. 
  

  

  Magnetic 
  Iron 
  Ore 
  Co., 
  132, 
  137. 
  

  

  Magnetites, 
  earliest 
  operations 
  date 
  

   back 
  to 
  about 
  1800, 
  6; 
  found 
  in 
  

   gneisses, 
  16, 
  27, 
  30; 
  gabbros, 
  17; 
  

   anorthosites, 
  17; 
  syenites, 
  18, 
  28; 
  

   granites, 
  30; 
  

  

  nontitaniferous: 
  6, 
  23-145; 
  ori- 
  

   gin, 
  30-33; 
  statistics 
  of 
  ore 
  pro- 
  

   duction, 
  6, 
  35-36; 
  mines 
  near 
  Fort 
  

   Ann, 
  37-40; 
  Crown 
  Point 
  mines, 
  

   40-43; 
  Hammondville 
  mine 
  group, 
  

   43-56; 
  Mineville-Port 
  Henry 
  mine 
  

   group, 
  57-88; 
  Minerva 
  mine, 
  89- 
  

   90; 
  Arnold 
  hill 
  and 
  Palmer 
  hill 
  

   mine 
  group, 
  90-105; 
  Lyon 
  Moun- 
  

   tain 
  mines, 
  105-24; 
  Saranac 
  valley 
  

   mines, 
  124-28; 
  St 
  Lawrence 
  county 
  

   mines, 
  128-42; 
  Salisbury 
  mine, 
  

  

  142-45 
  ; 
  

  

  titaniferous: 
  6, 
  7, 
  62, 
  67, 
  146-70; 
  

   Lake 
  Sanford 
  deposits, 
  155-64; 
  

   Moose 
  mountain 
  deposits, 
  164; 
  

  

  Split 
  Rock 
  mine, 
  164-66; 
  Lincoln 
  

   pond 
  mine, 
  166-67; 
  Little 
  pond 
  

   mine, 
  167-68; 
  Port 
  Leyden 
  mine, 
  

   168-69. 
  

  

  Manganese, 
  Arnold 
  mine, 
  98; 
  Ben- 
  

   son 
  mines, 
  136; 
  Clifton 
  mines, 
  141, 
  

   142; 
  Cook 
  mine, 
  104; 
  Finch 
  and 
  

   Chalifou 
  pits, 
  99; 
  Fine, 
  mines, 
  139; 
  

   Lyon 
  Mountain 
  mines, 
  121 
  ; 
  Nelson 
  

   Bush 
  mine, 
  96; 
  Parkhurst 
  mine, 
  

   123,; 
  Potter 
  mine 
  and 
  Baker 
  open- 
  

   ing, 
  38; 
  Skiff 
  mine, 
  55. 
  

  

  Maps 
  of 
  region, 
  11. 
  

  

  Marble, 
  9. 
  

  

  Martite, 
  26, 
  52, 
  96, 
  98. 
  

  

  Maynard, 
  George 
  W., 
  analyses 
  by, 
  

   39, 
  53, 
  54, 
  55, 
  56, 
  98, 
  99, 
  166; 
  cited, 
  

   41, 
  172. 
  

  

  Mica, 
  found 
  in 
  gneisses, 
  45, 
  46, 
  131, 
  

   140; 
  granites, 
  18; 
  limestones, 
  13; 
  

   magnetites, 
  39, 
  160; 
  quartzites, 
  

   14, 
  15; 
  schists, 
  15, 
  37, 
  45, 
  46, 
  48, 
  

   50, 
  67, 
  140. 
  

  

  Microcline, 
  found 
  in 
  gneisses, 
  89, 
  91, 
  

   no, 
  in, 
  125, 
  132, 
  169; 
  granites, 
  28, 
  

   37, 
  41, 
  46; 
  magnetites, 
  101, 
  113; 
  

   pegmatite, 
  114. 
  

  

  Microperthite, 
  found 
  in 
  gneisses, 
  15, 
  

   27, 
  89, 
  91, 
  103, 
  109, 
  in, 
  127, 
  169; 
  

   granites, 
  126; 
  hematites, 
  43; 
  mag- 
  

   netites, 
  113; 
  syenites, 
  18, 
  28, 
  46, 
  63, 
  

  

  65, 
  93- 
  

  

  Middleville, 
  syenites, 
  143. 
  

  

  Mill 
  brook, 
  6i„ 
  

  

  Miller 
  pit, 
  74, 
  80. 
  

  

  Mineral 
  deposits 
  other 
  than 
  iron 
  ores, 
  

   9- 
  

  

  Minerva 
  mine, 
  89-90. 
  

  

  Minerva 
  stream, 
  89. 
  

  

  Mineville 
  deposits, 
  23, 
  24, 
  25, 
  28, 
  66, 
  

   71-82; 
  analysis, 
  82; 
  concentrating 
  

   plants, 
  34; 
  glacial 
  drift, 
  61; 
  sta- 
  

   tistics 
  of 
  ore 
  production, 
  35. 
  See 
  

   also 
  Old 
  Bed 
  group 
  of 
  mines. 
  

  

  Mineville-Port 
  Henry 
  mine 
  group, 
  

   by 
  James 
  F. 
  Kemp, 
  57-88. 
  

  

  Mining 
  and 
  milling 
  in 
  the 
  Adiron- 
  

   dacks, 
  33-35. 
  

  

  Monocline 
  pyroxenes, 
  152. 
  

  

  