﻿11] 
  General 
  Geology 
  : 
  Economic 
  Products 
  131 
  

  

  The 
  Coochie 
  Brake 
  stone 
  is 
  a 
  light 
  yellow 
  or 
  bluish 
  yellow 
  coarse 
  

   grained 
  sandy 
  limestorae. 
  It 
  is 
  of 
  excellent 
  quality 
  for 
  build- 
  

   ing 
  purposes, 
  but 
  its 
  value 
  is 
  somewhat 
  impaired 
  by 
  the 
  presence 
  

   of 
  small 
  nodules 
  of 
  iron 
  pyrites. 
  These 
  will 
  restrict 
  its 
  use 
  to 
  

   situations 
  where 
  a 
  good 
  external 
  appearance 
  is 
  not 
  one 
  of 
  the 
  

   qualities 
  required 
  of 
  the 
  stone. 
  The 
  pyrite, 
  if 
  the 
  quantity 
  

   prove 
  to 
  be 
  large, 
  may 
  destroy 
  its 
  value 
  altogether. 
  The 
  quan- 
  

   tity 
  of 
  stone 
  at 
  this 
  locality 
  is 
  large, 
  and 
  it 
  is 
  easily 
  obtained. 
  

  

  The 
  Bayou 
  Chicot 
  stone 
  is 
  the 
  best 
  for 
  building 
  that 
  we 
  have 
  

   seen 
  in 
  the 
  State. 
  It 
  is 
  a 
  fine 
  grained, 
  dark 
  gray 
  limestone. 
  Only 
  

   two 
  very 
  small 
  outcrops 
  of 
  it 
  were 
  seen, 
  and 
  from 
  these 
  no 
  very 
  

   satisfactory 
  ideas 
  of 
  the 
  extent 
  of 
  the 
  deposit 
  could 
  be 
  gained. 
  

   In 
  the 
  two 
  outcrops 
  the 
  dip 
  is 
  great, 
  and 
  the 
  cost 
  of 
  uncovering 
  

   the 
  stone 
  would 
  probably 
  be 
  large. 
  Borings 
  are 
  needed 
  to 
  show 
  

   the 
  extent 
  of 
  this 
  deposit. 
  In 
  the 
  early 
  history 
  of 
  the 
  country 
  

   lime 
  was 
  made 
  at 
  this 
  place. 
  The 
  ruins 
  of 
  the 
  old 
  lime 
  kilns 
  

   are 
  to 
  be 
  seen 
  near 
  the 
  larger 
  outcrop. 
  

  

  Tertiary 
  limestone 
  concretions. 
  — 
  The 
  tertiary 
  limestone 
  concre- 
  

   tions 
  are 
  often 
  of 
  large 
  size 
  and 
  have 
  been 
  used 
  locally 
  for 
  the 
  

   foundations 
  of 
  houses. 
  At 
  Shreveport 
  large 
  calcareous 
  concre- 
  

   tions 
  are 
  crushed 
  and 
  used 
  on 
  the 
  streets 
  and 
  in 
  concrete 
  work. 
  

   Hopkins 
  * 
  reports 
  a 
  place 
  five 
  miles 
  from 
  Natchitoches, 
  called 
  

   the 
  Kilns 
  where 
  large 
  concretions 
  have 
  been 
  burned 
  for 
  lime. 
  

  

  At 
  Rocky 
  Spring 
  Church 
  lime 
  was 
  burned 
  from 
  a 
  little 
  

   outcrop 
  of 
  Midway 
  limestone 
  for 
  the 
  masonry 
  of 
  Fort 
  Jessup. 
  

  

  Gravel 
  

  

  For 
  the 
  location 
  and 
  distribution 
  of 
  the 
  main 
  gravel 
  beds 
  of 
  

   the 
  State, 
  the 
  reader 
  is 
  referred 
  to 
  the 
  discussion 
  of 
  the 
  Lafay- 
  

   ette. 
  Such 
  deposits 
  furnish 
  material 
  for 
  the 
  improvement 
  of 
  

   the 
  roads 
  and 
  streets, 
  and 
  for 
  railroad 
  ballast. 
  In 
  the 
  Florida 
  

   parishes 
  these 
  gravels 
  have 
  been 
  used 
  in 
  several 
  places. 
  McGee 
  

   reports 
  pits 
  near 
  Laurel 
  Hill 
  where 
  the 
  gravel 
  is 
  worked 
  for 
  road 
  

   material. 
  

  

  Near 
  Colfax 
  the 
  citizens 
  have 
  commenced 
  improving 
  the 
  bad 
  

   bottom 
  roads 
  with 
  gravel 
  from 
  the 
  hillsides 
  east 
  of 
  the 
  outlet 
  of 
  

   Lake 
  latt. 
  

  

  * 
  1st 
  An. 
  Rept., 
  1870, 
  p. 
  95. 
  See 
  also 
  the 
  present 
  Rept. 
  under 
  special 
  

   Report 
  No. 
  I, 
  S. 
  W. 
  cor. 
  of 
  township, 
  p. 
  144. 
  

  

  