﻿98 
  TWENTY-FIRST 
  REPORT 
  ON 
  THE 
  STATE 
  CABINET. 
  

  

  composition 
  like 
  that 
  of 
  anthracite, 
  and 
  is 
  then 
  scarcely 
  distin- 
  

   guishable 
  from 
  the 
  Madoc 
  mineral. 
  » 
  

  

  The 
  gold, 
  as 
  already 
  stated, 
  occurs 
  both 
  in 
  fine 
  scales, 
  dissemi- 
  

   nated 
  through 
  the 
  black 
  anthracitic 
  matter, 
  and 
  in 
  large 
  crystal- 
  

   line 
  grains 
  and 
  plates, 
  imbedded 
  in 
  the 
  bitter-spar, 
  sometimes 
  as- 
  

   sociated 
  with 
  quartz, 
  black 
  hornblende 
  and 
  iron 
  pyrites. 
  From 
  

   this 
  it 
  would 
  appear 
  that 
  the 
  introduction 
  of 
  the 
  gold 
  was 
  not 
  

   only 
  contemporaneous 
  with 
  the 
  deposition 
  of 
  the 
  bitter-spar, 
  but 
  

   continued 
  after 
  the 
  introduction 
  of 
  bitumen. 
  

  

  Carbonaceous 
  matters 
  not 
  unfrequently 
  occur 
  in 
  mineral 
  veins 
  

   in 
  other 
  regions, 
  and 
  are 
  met 
  with 
  in 
  several 
  localities 
  in 
  the 
  

   Laurentian 
  rocks 
  of 
  Scandinavia, 
  where, 
  according 
  to 
  Daubree, 
  in 
  

   the 
  silver 
  mine 
  of 
  Kongsberg, 
  a 
  matter 
  allied 
  to 
  anthracite 
  and 
  

   similar 
  to 
  that 
  of 
  Madoc, 
  occurs 
  in 
  mammillary 
  masses 
  imbedded 
  

   in 
  the 
  calc-spar 
  of 
  the 
  veinstone, 
  and 
  sometimes 
  penetrated 
  by 
  

   native 
  silver 
  (Ann. 
  des 
  Mines 
  [4], 
  iv, 
  p. 
  260). 
  In 
  other 
  veins 
  in 
  

   that 
  region 
  the 
  presence 
  of 
  bitumen 
  is 
  indicated, 
  and 
  in 
  the 
  beds 
  

   of 
  magnetic 
  iron 
  ore, 
  found 
  in 
  gneiss 
  at 
  Dannemora, 
  small 
  masses 
  

   of 
  a 
  matter 
  closely 
  resembling 
  bituminous 
  coal 
  in 
  composition, 
  

   and 
  penetrated 
  by 
  quartz 
  veins, 
  occur 
  in 
  the 
  midst 
  of 
  the 
  ore. 
  See 
  

   in 
  this 
  connection 
  Igelstrom's 
  recent 
  observations 
  on 
  the 
  bitumin- 
  

   ous 
  gneiss 
  of 
  Wermland, 
  in 
  Sweden 
  (Amer. 
  Jour. 
  Science, 
  [2], 
  

   xlv, 
  38). 
  According 
  to 
  Daubree, 
  both 
  graphite 
  and 
  anthracite, 
  

   where 
  they 
  occur 
  in 
  the 
  ancient 
  rocks 
  of 
  Scandinavia, 
  are 
  accompa- 
  

   nied 
  by 
  bitumen. 
  No 
  such 
  associations 
  have 
  hitherto 
  been 
  observed 
  

   with 
  the 
  graphite 
  of 
  our 
  Laurentian 
  series. 
  

  

  The 
  above 
  details 
  are 
  chiefly 
  taken 
  from 
  the 
  Report 
  on 
  the 
  Gold 
  

   of 
  the 
  County 
  of 
  Hastings, 
  already 
  cited.] 
  

  

  P. 
  S. 
  — 
  More 
  recent 
  researches 
  by 
  the 
  Geological 
  Survey 
  of 
  

   Canada, 
  have 
  shown 
  that 
  the 
  rocks 
  of 
  Hastings 
  county, 
  Ontario, 
  

   noticed 
  on 
  page 
  48, 
  rest 
  unconformably 
  upon 
  the 
  Laurentian, 
  and 
  

   belong 
  to 
  one 
  and 
  possibly 
  two 
  distinct 
  systems. 
  The 
  upper 
  and 
  

   larger 
  portion 
  consists 
  in 
  great 
  part 
  of 
  mica-schists 
  and 
  micaceous 
  

   limestones, 
  while 
  at 
  the 
  base 
  are 
  great 
  masses 
  of 
  dioritic 
  and 
  

   hornblendic 
  schists 
  with 
  iron 
  ore, 
  possibly 
  of 
  Huronian 
  age. 
  To 
  

   the 
  basal 
  portion 
  of 
  this 
  upper 
  series 
  belong 
  the 
  steatite, 
  page 
  79 
  j 
  

   as 
  also 
  the 
  gold, 
  page 
  66 
  ; 
  the 
  bismuth 
  ores 
  of 
  page 
  91, 
  and 
  the 
  

   anthracite 
  of 
  page 
  97. 
  The 
  upper 
  works 
  of 
  Hastings 
  are 
  noticed 
  

   by 
  me 
  in 
  the 
  American 
  Journal 
  of 
  Science, 
  for 
  July, 
  1870, 
  page 
  

   85. 
  T. 
  S. 
  H. 
  

  

  