COAL   BETWEEN    GALT/INA    AND   EATON    SPRING,    N.    A1EX.         847 
Locality  No.  8:  One  mile  southwest  of  Senorito,  near  the  Cuba- 
San  Miguel  road,  the  top  coal  bed  of  the  Mesaverde  has  been  mined 
to  some  extent  for  local  purposes.  At  this  locality  the  strata  are 
overturned,  as  at  points  farther  north,  the  rocks  dipping  east  at  an 
angle  of  70°.  Mining  is  reported  to  have  been  done  by  the  Juratrias 
and  other  copper  companies  formerly  operating  local  smelters  at 
Copper  City.  The  chief  developments  at  the  coal  mine  are  a  well- 
timbered  20-foot  shaft  following  the  dip  of  the  coal  and  a  small  head 
frame  with  a  windlass  hoist.  In  the  overturned  rocks  the  brown 
arenaceous  shale  stratigraphically  overlying  the  coal  becomes  the 
floor;  the  brown  shale  below  becomes  the  roof.  The  bed  at  this 
point  is  6  feet  thick  and  is  composed  of  clear  coal.  The  coal  has  a 
black,  shiny  luster  and  is  apparently  a  high-grade  subbituminous 
coal,  but  unfortunately  a  good  sample  for  analysis  could  not  be 
obtained  from  the  partly  filled  shaft.  The  coal  is  reported  on  good 
authority  to  have  given  general  satisfaction  as  a  steam  and  domestic 
fuel. 
From  this  locality  to  the  limit  of  the  field  here  described  the  Mesa- 
verde formation  is  steeply  inclined  eastward  toward  the  Sierra 
Nacimiento.  Farther  south  the  beds  assume  a  normal  attitude, 
dipping  steeply  westward  toward  the  interior  of  the  basin. 
RATON    SPRING    DISTRICT. 
The  Laramie  emerges  from  beneath  the  Puerco  12 \  miles  S.  70°  W. 
from  Senorito,  and  then  turns  westward  toward  Raton  Spring.  This 
formation  is  apparently  without  workable  coal  beds  in  this  vicinity, 
but  thin  beds  make  their  appearance  within  a  short  distance  and 
become  more  prominent  to  the  west.  The  formation  dips  slightly 
northward  and  does  not  stand  in  bold  escarpments.  Coal  exposures 
are  few  and  occur  in  small  outliers  irregularly  over  the  district.  Near 
Raton  Spring  there  are  three  beds,  two  averaging  3  feet  and  the  other 
2  feet  in  thickness.     Locally  they  show  thicknesses  of  3 \  or  4  feet. 
Locality  No.  9:  The  first  coal  exposure  noted  west  of  the  point  of 
emergence  is  1  mile  east  of  the  Farming  ton  and  Cabezon  road.  Here 
the  following  section  was  taken,  the  rocks  dipping  3°  N. : 
Section  of  Laramie  coal  beds  1  mile  east  of  Farming  ton- Cabezon  road  (No.  9). 
Ft.    in. 
Sandstone,  brown,  hard ' 2 
Shale,  very  compact,  sandy 20 
Coal 1       1 
Coal,  bony 5 
Coal 5 
Shale,  carbonaceous 6 
Shale,  brown 1       0 
Shale,  gray,  sandy 20 
Covered.  
45     11 
