GRAND    MESA   COAL   FIELD,    COLORADO. 
333 
toward  the  mountains,  and  the  coal  nearest  the  intrusive  rock  at 
the  east  end  of  the  field  is  semianthracite. 
The  samples  for  analysis  were  all  taken  in  the  manner  described  on 
pages  12-13,  and  great  care  was  exercised  to  obtain  representative  coal. 
Analyses  of  coal  samples  from  the  Grand  Mesa  coalfield,  Colorado. 
[F.  M.  Stanton,  chemist  in  charge.] 
District 
Gunnison. 
Palisades. 
Rollins. 
Chara< 
Bituminous. 
Subbituminous  to  bituminous. 
Laboratory  No 
5530. 
5534. 
5724. 
5535. 
5541. 
5542. 
5540.     5522. 
5539. 
5521. 
Samp] 
e  as  received: 
5.9G 
26.41 
41.2] 
26.42 
.80 
6.53 
33. 85 
50.95 
8.67 
1.11 
7.18 
32.97 
50.98 
8.87 
.58 
5.53 
67.54 
1.24 
16.24 
6,649 
11,968 
11.51 
32.60 
45.53 
10.36 
.93 
17.18 
30.67 
41.41 
1(1.  74 
.70 
19.14 
ill.  20 
41.73 
7.93 
.75 
6.06 
55.11 
1.10 
29.05 
5.322 
16.37 
29.79 
45. 39 
8.45 
.45 
5.87 
56.74 
1.13 
27.36 
5.616 
14.16 
31.29 
48.48 
6.07 
.68 
5.90 
61.15 
1.22 
24.98 
6,016 
15.26 
30.24 
45.83 
8.67 
.60 
5.87 
59.24 
1.11 
24.51 
5,780 
10, 404 
13.36 
X 
o. 
Volatile  matter 
33.72 
48.69 
Cm 
(Ash 
4.23 
.56 
5.88 
+^J 
62.11 
0 
1.30 
25.92 
Ca 
Br 
4,697 
8,455 
6,078 
10,940 
5,782 
10,408 
5,202 
6,226 
11.207 
itish  thermal  units 
9,364      9,580    10,109 
10,829 
Loss  of  moisture  on  air  dry- 
2.10 
2.10 
2.40 
2.70 
5.00       5.90 
4.30 
4.90 
5.50 
4.60 
Air-dr 
ied  sample: 
3.94 
26.98 
42.09 
26.99 
.82 
4.52 
34.58 
52.04 
8.86 
1.13 
4.89 
33.78 
52.24 
9.09 
.59 
5.39 
69.20 
1.27 
14.46 
6,813 
12,262 
9.05 
33.51 
46.79 
10.65 
.96 
12.82 
32.28 
43.59 
11.31 
.74 
14.07 
33.16 
44.34 
8.43 
.80 
5.74 
58.56 
1.17 
25.30 
5,656 
10,181 
12.61 
31.13 
47.43 
8.83 
.47 
5.63 
59.  29 
9.73 
32.90 
50.99 
6.38 
.72 
5.64 
64.  30 
10.34 
32.00 
48.49 
9.17 
.64 
5.57 
62. 69 
1.17 
20.76 
6.116 
9.18 
1 
Volatile  matter 
35.35 
51.04 
Ui 
fAsh 
4.43 
.59 
5.63 
£\ 
65.11 
£ 
1.18       1.28 
24.60  ,  21.68 
5,868     6,326 
1.36 
"5,"942" 
10,696 
*5,"476" 
9,856 
22.88 
Ca 
Br 
Thicki 
pled 
4,798     6,208 
8,636    11,175 
6,526 
itish  thermal  units 
less  oi  part  of  bed  sam- 
10,563    11,387    11,010 
11,747 
Ft.  in.   Ft.  in. 
3    4       16 
Ft.  in. 
6    2 
Ft.  in. 
4 
Ft.  in. 
7    6 
Ft.  in. 
11 
Ft.  in. 
6    5 
Ft.  in. 
4 
Ft.  in. 
5 
Ft.  in. 
3    8 
Distru 
;t 
Rollins. 
Somerse 
t. 
Charai 
3ter  of  coal 
Sul 
bitumi 
ious  to 
bituminous. 
Bituminou 
anthracil 
s  to 
,e. 
Labor 
atory  No 
5523. 
5524. 
5538. 
5525. 
5537. 
5536. 
5552. 
5551. 
5526. 
5527. 
Sampl 
e  as  received: 
Moisture 
L3.57 
9.85 
10.24 
31.57 
42.10 
16.09 
.60 
13. 97 
31.90 
43.  23 
10.  90 
.54 
15.54 
16.67 
22.40 
31.19 
42.16 
4.25 
.30 
8.90 
32.61 
47.05 
11.44 
.SI 
5.34 
62.  03 
1.26 
19.12 
6,174 
11,113 
13.64 
30.89 
47.33 
8.14 
.68 
,5.41 
58.06 
1.24 
26.47 
5,576 
10,037 
9.37 
gl 
Volatile  matter 
32.  58 
46.  17 
32.76 
43.  46 
33.03     33.10 
46.06  i  46.27 
5.37  !     3.96 
.58         .47 
34.75 
53.04 
Hh 
|Ash 
I  Sulphur 
7.68     13.93 
.  83       1. 83 
2.84 
.50 
5.89 
60.08 
1.05 
27.03 
5,865 
10,557 
5.81 
*■*• 
:;:      :;;:; 
69.94 
P 
1.31 
19.60 
Ca 
Br 
5,921 
10,658 
5,683 
10,229 
5,589 
11), (Kill 
5,667 
11).  201 
5,945 
10.701 
4,533 
S.  I.V.I 
6,883 
itish  thermal  units 
12,389 
Loss  of  moisture  on  air  dry- 
ing  
5.  40       3. 10 
3.00 
4.70 
4.70 
5.20       8.80  '     3.30       5.20 
3  60 
Air-dr 
ied  sample: 
8.64       6.97 
34.44     33.81 
48. 80     44.  85 
7.  46 
32.55 
43.40 
16.  59 
.62 
9.  73 
3:?.  47 
45.36 
11.44 
.57 
11.37 
34.66 
48.  33 
5.64 
.61 
:,  63 
63  "1 
1.  10 
23.98 
6,154 
12.10     14.9] 
34.92     34.20 
48.  80     46.  23 
5.  79 
33.  72 
48.66 
11.83 
.84 
.",  l  1 
64.  15 
1.30 
16.74 
6,385 
11,492 
8.90 
32.58 
49.  93 
8.59 
.72 
5.09 
til.  21 
1.31 
23.05 
5,882 
10,588 
5.98 
y, 
o. 
U  1 
Volatile  matter 
Fixed  carbon 
36. 05 
55.02 
Cm 
fAsh 
[Sulphur 
8.12 
.88 
L4.37 
1.89 
1.  is 
.50 
4.66 
.33 
2.95 
.52 
5.61 
s. 
72.55 
u 
1.36 
17.01 
Ca 
Bt 
Thicki 
pled 
6,259     5,865 
11,266    10,556 
-,,762 
10,371 
5,946 
10,704 
6.271 
1,970 
8,946 
7,140 
itish  thermal  units 
less  of  part  of  bed  sain  - 
11,078    11,288 
12,850 
Ft.  in.   Ft.  in. 
6    5       3    6 
Ft.  in. 
5    4 
Ft.  in. 
5    6 
Ft.  in. 
14 
Ft.  in. 
6    2 
/•'/.  in. 
6    6 
/•'/.  in.   Ft.  in. 
7    8       6    6 
Ft.  in. 
8    8 
