210  CONTRIBUTIONS    TO    ECONOMIC    GEOLOGY,  1904.         [bull.  260. 
of  carnotite  appear  on  the  surface  of  the  rock.  Various  analyses 
given  out  through  the  press  have  shown  good  percentages  of  both 
uranium  and  vanadium.  In  the  sample  tested  in  the  laboratory  of 
this  Survey,  however,  no  uranium  was  detected. 
These  deposits  were  discovered  in  the  fall  of  1903  by  sheep  herders, 
and  prospected  in  1904  by  Messrs.  Browning  and  Beebe.  The  black 
vanadiferous  sandstone  is  reported  to  be  present  in  large  quantity  in 
the  Cretaceous  formation.  Owing  to  its  distant  location  the  writer 
was  unable  in  the  limited  time  available  to  visit  this  property.  The 
owners  are  said  to  be  actively  developing  their  property,  and  future 
work  may  reveal  pay  ore  in  sufficient  quantity  to  make  this  deposit 
commercially  profitable. 
MISCELLANEOUS   PROSPECTS. 
In  more  inaccessible  regions  adjoining  those  in  which  the  above- 
described  deposits  are  found  prospectors,  herders,  and  explorers  have 
from  time  to  time  reported  the  occurrence  of  these  rare  minerals. 
Our  increasing  knowledge  of  the  subject  not  only  tends  to  make  these 
reports  seem  plausible,  but  to  lead  one  to  regard  it  as  possible  that 
valuable  deposits,  perhaps  more  valuable  than  any  yet  discovered  in 
the  State,  may  exist  at  some  of  these  localities. 
On  the  east,  deposits  of  carnotite  are  reported  to  have  been  traced 
from  Colorado  southwestward  into  the  region  of  the  Abajo  Moun- 
tains, in  southeast  Utah.  The  rocks  in  which  carnotite  occurs,  in  the 
Colorado  localities,  on  the  east  side  of  the  La  Sal  Mountains,  arc 
known  to  extend  southwestward  in  that  direction.  Accordingly  it 
would  not  be  surprising  if  valuable  deposits,  comparable  with  the 
rich  Colorado  ores,  should  occur  in  them,  especially  in  the  vicinity  of 
the  Abajo  eruptive  center. 
Carnotite  is  also  reported  to  occur  west  of  the  La  Sal  Mountains, 
at  Mill  Creek,  on  Grand  River,  north  of  Moab  and  south  of  the 
Richardson  locality. 
North  of  Richardson  and  about  10  miles  south  of  Thompsons 
Springs  bedded  deposits  of  uranium  are  said  to  have  been  found. 
They  are  reported  to  have  been  opened  to  a  depth  of  1  feet  and  proved 
to  exist  in  considerable  quantity  and  to  be  of  good  quality. 
On  Cold  Creek,  20  miles  north  of  Price,  a  sandstone  is  said  to  bear 
blotches  of  carnotite,  together  with  green  and  yellow  stains,  possibly 
of  copper,  and  fossil  plant  remains. 
Southward,    between    Price    and    the    Henry    Mountains,   small    ^ 
amounts  of  carnotite  are  reported  to  occur  at  three  different  places. 
Vague  reports  of  occurrences  at  four  or  five  other  points  have  come 
to  the  writer,  but  they  are  too  uncertain  to  be  worthy  of  publication. 
ota] 
