﻿ENDLicHl 
  TRINIDAD 
  REGION-r-COAL. 
  -201 
  

  

  It 
  furnishes 
  a 
  good 
  coke. 
  Ash 
  is 
  grey, 
  slightly 
  reddish, 
  the 
  result 
  of 
  a 
  

   very 
  minute 
  quantity 
  of 
  ferric 
  oxide. 
  . 
  . 
  ^ 
  " 
  ' 
  

  

  . 
  No. 
  2. 
  

  

  ^ 
  *> 
  Per 
  cent. 
  

  

  Loss 
  at 
  110° 
  C. 
  (water) 
  "0.20 
  

  

  Carbon, 
  fixed..... 
  ." 
  49.66 
  

  

  Volatile 
  combustible 
  matter 
  (by 
  difference) 
  26. 
  94 
  

  

  Ash 
  ; 
  ..: 
  23.20 
  

  

  _ 
  *"' 
  100.00 
  

  

  Specific 
  gravity 
  : 
  1.53. 
  " 
  * 
  

  

  ■. 
  ■ 
  ■♦ 
  • 
  ' 
  

  

  In 
  this 
  instance 
  the 
  higher 
  specific 
  gravity 
  is 
  owing 
  to 
  .the 
  largeper- 
  

   centage 
  of 
  ash. 
  The 
  coke 
  obtained 
  from 
  thejjoal 
  is 
  good, 
  deducting, 
  of 
  

   course, 
  the 
  considerable 
  amount 
  of 
  incombustible 
  matter. 
  

  

  In 
  preceding 
  pages 
  of 
  this 
  chapter 
  the 
  coal 
  occurring 
  in 
  the 
  Dry 
  

   Arroya 
  has 
  been 
  mentioned. 
  It 
  has 
  been 
  exposed 
  to 
  atmospheric 
  influ- 
  

   ences 
  for 
  a 
  long 
  period 
  of 
  time. 
  Interest 
  was 
  attached 
  to 
  the 
  question 
  

   regarding 
  its 
  composition, 
  and 
  the-refore 
  an 
  assay 
  was 
  made 
  which 
  con- 
  

   firmed 
  the 
  expectations 
  held. 
  Good 
  coke 
  was 
  obtained 
  from 
  the 
  coal, 
  

   and 
  the 
  ash 
  was 
  very 
  light, 
  botu 
  in 
  color 
  and 
  weight 
  of 
  the 
  volume. 
  

  

  ^ 
  • 
  ' 
  . 
  

  

  Dry 
  Arroya, 
  

   ' 
  ' 
  Per 
  cent. 
  

  

  Loss 
  at 
  110° 
  C. 
  (water) 
  0.52 
  

  

  Carbon, 
  fixed 
  , 
  - 
  ■. 
  . 
  . 
  , 
  . 
  . 
  . 
  40. 
  06 
  

  

  Volatile 
  combustible 
  matter 
  (by 
  difference).. 
  27. 
  56 
  

  

  Ash 
  , 
  31.86 
  

  

  » 
  

  

  ** 
  •' 
  - 
  100.00 
  

  

  Specific 
  gravity 
  : 
  1.36. 
  * 
  

  

  With 
  this 
  I 
  conclude 
  the 
  coal-assays 
  from 
  Trinidad. 
  For 
  the 
  sake 
  of 
  

   convenience 
  I 
  shall 
  append 
  two^ftom 
  the 
  Oucharas. 
  • 
  

  

  About 
  a 
  mile 
  above 
  Walsen^j^ 
  (Placita) 
  several 
  openings 
  have 
  been 
  

   made 
  on 
  the 
  south 
  side 
  of 
  OiJIPFras 
  Eiv-er, 
  but 
  no 
  work 
  of 
  any 
  extent 
  

   has 
  been 
  done. 
  As 
  I 
  could 
  find 
  rone 
  of 
  the 
  owners, 
  T 
  visited 
  these 
  

   openings 
  alone, 
  hence 
  failed 
  to 
  learn 
  the 
  names 
  tlia*t 
  have 
  probably 
  been 
  

   given 
  them. 
  The 
  largest 
  vein 
  seen 
  was 
  one 
  of 
  8 
  feet 
  in 
  thickness, 
  but 
  

   several 
  smaller 
  ones 
  were 
  observed. 
  ■♦ 
  It 
  wg.s 
  noticed 
  that 
  the 
  coal 
  here 
  

   was 
  not 
  so 
  uniform 
  in 
  character 
  as 
  that 
  from 
  Trinidad. 
  Admixtures 
  of 
  

   shale 
  and 
  very 
  fine-grained 
  arenaceous 
  deposits 
  have 
  produced 
  a 
  com- 
  

   paratively 
  higher 
  percentage 
  of 
  ash. 
  Lamination 
  may 
  be 
  seen, 
  as 
  a 
  

   rule, 
  therefore, 
  the 
  result 
  of 
  such 
  admixture.' 
  The 
  coke 
  obtained 
  "from 
  

   this 
  coal 
  does 
  not 
  equal 
  in 
  quality 
  that 
  from 
  Trinidad. 
  It 
  is 
  possible 
  

   that 
  with 
  increasing 
  depth 
  of 
  the 
  mines 
  t^e 
  coal 
  found, 
  may 
  become,more 
  

   homogeneous, 
  thus 
  producing 
  better 
  coke. 
  Two 
  specimens 
  were 
  selected, 
  

   choosing 
  a 
  high 
  average 
  quality, 
  so 
  far 
  as 
  extferior 
  appearance 
  could 
  in- 
  

   dicate 
  it. 
  Analyses 
  furnished 
  the 
  following 
  results 
  : 
  - 
  v 
  . 
  

  

  Cucharas 
  coal. 
  

  

  ■^ 
  No. 
  1. 
  

  

  , 
  Per 
  cent. 
  

  

  Loss 
  at 
  110° 
  C. 
  (water) 
  .• 
  ; 
  -■ 
  <..:... 
  -.1.46 
  

  

  Carbon, 
  fixed 
  i 
  '. 
  48.12 
  

  

  Volatile 
  combustible 
  matter 
  (by 
  difference) 
  4J.76 
  

  

  Ash 
  8.66 
  

  

  100. 
  00 
  

   Specific 
  gravity 
  : 
  1. 
  32. 
  * 
  , 
  . 
  

  

  » 
  '■ 
  

  

  