BOOK  CLIFFS  COAL  FIELD,  UTAH.  301 
Johnson  mine,  Cottonwood  Canyon. — The  Johnson  mine  is  driven  on  a  bed  of  coal  7  feet 
sec. 
0  inches  thick,  situated  on  the  west  side  of  Cottonwood  Canyon,  in  the  SW.  \  NE. 
15,  T.  17  S.,  R.  6  E.  The  floor  of  the  coal  is  a  massive  white  sandstone.  Shaly  sandstone 
.  feet  thick  forms  the  roof.  A  coal  bed  5  feet  thick  is  reported  by  Mr.  Johnson,  the  operator 
f  the  mine,  to  occur  above  the  shaly  sandstone;  also  50  feet  higher  in  the  section  a  bed  3 
eet  thick  is  said  to  have  been  found.  A  bed  of  shale  and  bony  coal  occurs  50  to  GO  feet 
>elow  that  of  the  Johnson  mine,  but  it  has  been  proved  to  be  of  no  value. 
Ferron  Canyon. — A  coal  bed  8  feet  thick  is  reported  by  reputable  authorities  to  occur 
n  Ferron  Canyon  west  of  the  faulted  area  in  T.  19  S.,  R.  6  E.  This  township  has  not  been 
livided  into  sections.  A  traverse  up  the  canyon  to  the  vicinity  of  the  prospect  locates  it 
lear  where  the  southeast  corner  of  sec.  19  will  be  placed. 
Quitchvpah  Canyon. — The  outcrops  of  coal-bearing  strata  in  Quitchupah  Canyon  extend 
westward  into  the  unsurveyed  part  of  the  Wasatch  Plateau.  A  coal  bed  reported  to  be 
)  to  10  feet  thick  has  been  prospected  near  the  base  of  the  coal-bearing  rocks  in  the  NE. 
sec.  17,  T.  22  S.,  R.  5  E.  Another  prospect  exposing  16  feet  of  coal  is  said  to  have  been 
nade  in  the  canyon  near  the  eastern  and  unsurveyed  part  of  T.  22  S.,  R.  4  E.  Time  did 
lot  permit  an  investigation  of  these  prospects. 
Ivie  Creek  Canyon. — Ivie  Creek  Canyon  is  situated  near  the  south  end  of  the  Book  Cliffs 
ield.  Coal  beds  near  the  base  of  the  series  have  been  prospected  on  Clear  and  Red  creeks, 
which  flow  northward  from  Mount  Hilgard  into  Ivie  Creek;  also  on  Ivie  Creek  near  the 
mouth  of  Red  Creek.  In  no  instance  was  the  whole  thickness  of  the  coal  exposed.  A 
prospect  on  Clear  Creek,  near  the  center  of  the  north  side  of  sec.  10,  T.  24  S.,  R.  4  E.,  showed 
5  feet  of  weathered  coal  without  exposing  the  base  of  the  bed.  A  coal  prospect  on  Red 
Creek,  near  the  north  side  of  the  NW.  I  sec.  3,  T.  24  S.,  R.  4  E  ,  appears  to  be  on  the  same 
bed  as  that  opened  on  Clear  Creek.  Three  feet  of  the  upper  part  of  the  bed  are  exposed 
in  the  Red  Creek  prospect.  Two  coal  beds  have  been  opened  in  shallow  prospects  on  the 
north  side  of  Ivie  Creek,  in  the  SW.  \  sec.  34,  T.  23  S.,  R.  4  E.  The  beds  are  decomposed 
and  it  is  believed  the  exposures  do  not  represent  the  true  thickness  of  the  coal.  The  upper 
exposure  shows  2  feet,  while  the  lower  is  4  to  5  feet  thick.  The  intervening  strata  consist 
of  18  feet  of  shale. 
Emery  coals. — These  beds  occur  in  association  with  the  sandstone  that  lies  stratigraph- 
ically  below  the  shale  of  Castle  Valley.  They  are  exposed  in  the  breaks  and  bluffs  of  Muddy 
Creek  4  to  6  miles  southeast  of  Emery.  The  beds  are  referred  to  as  the  Emery  coals  since 
they  are  utilized  to  supply  Emery  with  domestic  fuel  and  the  town  owns  the  land  in  which 
the  most  valuable  mine  is  situated.  A  section  of  the  strata  including  the  coals  is  given 
above  (p.  294),  in  the  discussion  of  the  sandstones  of  the  Red  Plateau.  Two  coal  beds  of 
workable  thickness  were  noted.  The  lower  coal  is  variable  both  in  thickness  and  in  respect 
to  its  included  strata  of  bone  and  shale.  A  tunnel  has  been  made  on  the  lower  bed  near 
the  center  of  sec.  26,  T.  22  S.,  R.  6  E.  The  coal  occurs  in  two  partings  separated  by  14 
inches  of  shale.  The  lower  workable  bench  consists  of  6  feet  of  bony  coal.  The  upper 
layer  is  14  inches  thick.  Across  the  gulch  in  which  the  mine  occurs  the  coal  seems  to  thin 
out  within  a  distance  of  one-fourth  mile.  A  coal  bed  near  the  same  position  in  the  strata 
crops  out  in  the  cliffs  on  the  west  side  of  Muddy  Creek  Canyon,  in  the  NE.  {  sec.  35,  T.  22 
S.,  R.  6  E.  The  coal  is  in  three  benches  and  is  similar  in  quality  to  that  at  the  mine.  The 
lower  and  middle  benches  are  each  2  feet  thick,  while  the  upper  is  1  foot  9  inches.  They 
are  separated  by  bands  of  bony  shale  4  to  6  inches  thick. 
Emery  mine. — An  upper  coal  bed  occurs  125  to  150  feet  higher  in  the  section  and  within 
50  feet  of  the  top  of  the  sandstone  series  below  the  shale  of  Castle  Valley.  This  coal  is  in 
a  single  massive  bed  5  feet  thick.  It  is  incased  in  shale  and  adheres  to  the  roof  and  floor 
so  strongly  that  it  is  separated  with  difficulty  in  mining.  The  coal  contains  no  shaly  or 
bony  partings  and  compares  favorably  in  composition  with  coals  of  the  Book  Cliffs  series, 
as  shown  by  its  analysis  (see  table,  p.  294).  The  mine  is  situated  in  the  NE.  \  SW.  \  sec.  2, 
T.  23  S.,  R.  6  E.,  on  the  highland  west  of  Muddy  Creek  Canyon.  A  drift  has  been  driven 
50  feet  on  the  coal  and  two  rooms  have  been  turned. 
Bull.  285—06 20 
