270         CONTRIBUTIONS    TO    ECONOMIC   GEOLOGY,   1907,   PART   II. 
Analyses  of  coal  samples  from  the  Rock  Springs  field,  Wyoming. 
[F.  M.  Stanton,  chemist  in  charge.] 
Name  of  formation. 
Lower  part  of  Mesaverde. 
Name  of  coal  group. 
Rock  Springs. 
Laboratory  No. 
5365.      5926.      5304.      53G6.      5785.      5806 
Sample  as  received: 
I  Moisture 
Volatile  matter... 
Fixed  carbon 
fAsh 
ItSulphur 
Hydrogen 
Carbon 
Nitrogen 
Oxygen.. 
Calories 
British  thermal  units. 
10.46 
36.41 
50.90 
2.23 
.87 
5.37 
68.98 
1.32 
21.23 
6,817 
12,271 
Loss  of  moisture  on  air  drying 
Air-dried  sample: 
I  Moisture 
Volatile  matter 
Fixed  carbon 
(Ash 
IlSulphur 
Hydrogen 
Carbon 
Nitrogen 
Oxygen 
Calories 
British  thermal  units. 
Ratios— 
C  4-  (0"+"Ash)"! 
4.00 
6.73 
37.93 
53.02 
2.32 
.91 
5.14 
71.85 
1.37 
18.41 
7,101 
12,782 
13.96 
3.43 
Thickness  of  coal. 
10.55 
34.79 
50.42 
4.24 
.86 
5.66 
67.12 
1.27 
20.85 
6,756 
12,161 
9.01 
35.75 
52.61 
2.63 
.75 
12,362 
2.70 
6.04 
36.54 
52.  96 
4.46 
.90 
5.39 
70.50 
1.33 
17.42 
7,097 
12,774 
13.09 
3.22 
6.49 
36.74 
54.07 
2.70 
.77 
7,058 
12, 704 
9.75 
34.32 
52.50 
3.43 
1.00 
5.77 
68.39 
1.22 
20.19 
6,810 
12, 258 
3.50 
6.48 
35.56 
54.42 
3.54 
1.04 
5.58 
70.87 
1.27 
17.70 
7,057 
12,703 
12.70 
3.31 
Ft.  in. 
12 
J  Ft.  in. 
6  3 
10.23 
34.11 
51.10 
4.56 
1.15 
5.77 
66.87 
1.49 
20.16 
6,682 
12,028 
13.65 
34.83 
50.08 
1.44 
.98 
6.05 
64.53 
1.18 
25.82 
6,590 
11,862 
12.70 
32.82 
49.94 
4.54 
.76 
5.81 
65.14 
1.12 
22.63 
6.512 
11,722 
5.00 
5.51 
35.90 
53.79 
4.80 
1.21 
5.48 
70.39 
1.57 
16.55 
7,034 
12, 661 
12.79 
3.29 
Ft.  in. 
4.90   5.60 
9.20 
36.63 
52.66 
1.51 
1.03 
5.79 
67.86 
1.24 
22.57 
6,929 
12, 473 
11.71 
2.81 
7.52 
34.77 
52.90 
4.81 
.80 
5.50 
69.00 
1.19 
18.70 
6, 898 
12,417 
12.52 
2.94 
Ft.  in.   Ft.  in. 
6     6  11 
5695.   5786 
13.67 
32.43 
51.00 
2.90 
.  72 
5^83 
65.93 
1.19 
23.43 
6,424 
11,563 
6.30 
7.87 
34.61 
54.43 
3.09 
.77 
5.48 
70.36 
1.27 
19.03 
6,856 
12,340 
12.81 
3.18 
Ft.  in. 
14.63 
34.14 
47.  69 
3.54 
1.01 
5.81 
63.45 
1.33 
24.86 
6,321 
11,378 
6.00 
9.18 
36.  32 
50.73 
3.77 
1.07 
5.47 
67.50 
1.41 
20.78 
6,724 
12, 104 
12.32 
2.75 
Ft.  ii 
Name 
of  formation 
Lower  na.rt  of  Mesaverde. 
Name 
of  coal  group 
Rock  Springs. 
5696. 
Labor 
atory  No 
5358. 
5598. 
5596. 
5360. 
5694. 
5362. 
5359. 
5361. 
5363. 
Sampl 
e  as  received:               — ■ 
[Moisture 
8.53 
35.  60 
50.39 
5.48 
.78 
5.36 
66.15 
1.19 
21.04 
6,574 
11,833 
13.76 
31.52 
50.52 
4.20 
1.30 
5.70 
63.78 
1.09 
23.93 
6,348 
11,426 
13.15 
33.07 
48.87 
4.91 
1.15 
13.01 
34.00 
49.80 
3.19 
.75 
5.91 
13.01 
32.83 
51.56 
2.60 
.71 
5.25 
13.51 
33.62 
49.17 
9.76 
32.  62 
48.  58 
14.51  !  16.02 
34.17  ;  33.63 
47.24  I  47.60 
14.43 
o 
Volatile  matter 
Fixed  carbon 
33.30 
47.10 
fu 
/Ash 
3.  70       9.  04 
4.08 
1.02 
'6,167 
2.75 
.94 
6.11 
62.29 
1.08 
26.  83 
6,027 
5.17 
1  Sulphur 
1.46 
.90 
.99 
Hydrogen 
5.52 
63.76 
1.12 
19.66 
6,280 
11,304 
5.55 
—■< 
Carbon 
64.  92 
64.54 
61.47 
£ 
Nitrogen 
1     1.20 
[  24.03 
6,311      6,403 
11,360   11,525 
1.20  1 
25.70  | 
6,292  1  6,271 
11,326  111, 288 
1.14 
Oxygen 
25.68 
Ca 
Br 
lories 
6,086 
itish  thermal  units 
11,101 
10,849 
10,955 
Loss  of  moisture  on  air  drying 
2.30 
5.50 
5.40  1     3.40 
4.30  j     3.80 
2.80 
4.10 
6.20 
4.20 
Air-dr 
t 
Ca 
Br 
Re 
Thicki 
led  sample: 
Moisture 
6.37 
36.  44 
51.58 
5.61 
.80 
5.22 
67.71 
1.22 
19.44 
6,729 
12,111 
12.95 
2.70 
Ft.  in. 
6  11 
8.74 
33.35 
53.46 
4.45 
1.38 
5.38 
67.49 
1.15 
20.15 
6,717 
12,091 
12.52 
2.73 
8. 19       9. 95 
9.10 
34.  30 
53.88 
10.09 
34.95 
51.11 
7.16 
33.56 
49.98 
9.30 
.93 
5.36 
65.60 
1.15 
17.66 
6, 461 
11,630 
12.22 
2.34 
10.85 
35.63 
49.26 
4.  26 
1.06 
'M30" 
11,575 
10.47 
35.85 
50.75 
2.93 
1.00 
5.78 
66.41 
1.15 
22.73 
6,425 
11,566 
11.22 
2.60 
10.68 
Volatile  matter 
Fixed  carbon 
34.96 
51.66 
35.20 
51.55 
34.  76 
49.16 
(Ash 
5.19 
1.22 
3.30 
.78 
5.72 
67.  21 
2.  72       3.  85 
5.40 
•   .74 
4.99 
67.44 
1.25 
22.86 
6,575 
11,835 
13.50 
2.62 
1.52 
11,733 
1.03 
5.30 
64. 17 
!     1.24 
21.75 
6, 671      6. 628 
1.19 
Oxygen 
22.91 
lories 
6, 353 
itish  thermal  units 
itios— 
C  -h  H 
12,008 
11,931 
11.75 
2.68 
11,435 
12.10 
C  -*-  (O  +  Ash) 
2.27 
Ft.  in. 
8 
Ft.  in. 
7    4 
Ft.  in. 
5    9 
Ft.  in. 
6 
Ft.  in. 
6    9 
Ft.  in. 
5    4 
Ft.  in. 
7    7 
Ft.  in. 
10  10 
Ft.  in. 
2    5 
