COAL    AND    OIL    TN    UINTA    COUNTY,   WYO. 
QUALITY    OF    OIL. 
351 
The  oil  obtained  from  the  Brigham  Young,  White,  Carter,  and  Fossil  oil  springs,  and 
wells  in  their  neighborhood,  is  a  dark,  heavy  oil  which  has  perhaps  been  derived  in  part 
from  the  Benton  oil  by  the  evaporation  of  its  more  volatile  portions.  The  gravity  of  the 
Carter  oil  is  given  by  Slossona  as  21.5°  Baume.  The  gravity  of  the  Fossil  or  Twin  Creek 
oil  is  given  by  the  Union  Pacific  Railroad  b  as  26.7.r)°  Baume  and  by  Slossona  as  19.7° 
Baume.     The  results  of  several  analyses  of  the  Spring  Valley  petroleum  are  given  below: 
Analysis  of  oil  from  Union  Pacific  well  at  Spring  Valley,  Wyo. 
[By  Thomas  Price  &  Son,  San  Francisco,  1901.] 
Per  cent. 
Naphtha  (gasoline  and  benzine) 28 
Kerosene •>  \ 
Signal  and  headlight  oil 8 
Lubricating,  reduced  stock 23 
Paraffin j  7 
Analysis  of  oil  from  650-foot  sand,  of  Union  Pacific  mil  at  Spring  Vattt  y,  Wyo. 
[By  Louis  Falkenau,  Sun  Francisco,  1901.] 
Per  cent 
by 
volume. 
Per  cent 
by 
weight. 
Specific 
gravity. 
Gravity 
Baume. 
Nature  of  product. 
Given  off  at — 
66°-302°  F . . . 
15.0 
33.1 
26.5 
L9.5 
17.1 
33.4 
27.1 
20.  i 
1.0 
1.0 
0. 710 
.802 
.830 
.810 
o 
60 
46 
35 
31 
302°-491°  F . . . 
illuminating. 
Heavy  illuminating  or 
signal. 
Lubricating  and  par- 
affin. 
491°-602°  F . . . 
602°  F.  (boiled  dry) 
Residue : 
Bituminous  (soluble) 
Carbon  and  ash  (insoluble) 
Specific  gravity  of  crude  at  66°  F.,  0.825. 
Crude  flashes  at  66°  F. 
Analysis  of  oil  from  Union  Pacific  well,  Spring  Vol  It zy,  Wyo. 
[By  G.  W.  Gray,  chemist,  Standard  Oil  Company,  1902.] 
Percent. 
Gasoline 19 
Refined  illuminating  oil 35 
Heavy  lubricating  oil 21 
Intermediate  lubricating  oil *  -  -  - 1 
Coke 1.8 
Loss 2 
Sample  baled  from  well  upon  first  day  of  opening,  Thursday,  January  26,  1902,  run  into  tank  ear, 
and  taken  from  tank  car  Sunday,  June  29,  1902. 
Gravity,  0.8211,  or  41.5°  Baume. 
a  Slosson,  E.  E.,  Bull.  School  of  Mines,  Univ.  Wyoming,  petroleum  scries,  No.  3,  1899,  p.  31. 
b  Mineral  Resources  U.  S.  for  1885,  U.  S,  Geol,  Survey,  1886,  p.  154. 
