HII.LKRRAN] 
CARNOTITE AND ASSOCIATED MINERALS. 
25 
[nsoluble. 
U0 3 
V 7 2 5 
P,0 R 
A1A 
Fe 2 O a 
CM).. 
3rO.. 
BaO 
MgO 
Na 2 
LU> 
3 2 at 105° . . . 
3 2 at 350° . . . 
i 2 above 350°. 
bO 
uO 
fOa 
£o0 3 
!i0 2 
i0 2 
2 
«7.10 
54.89 
18.49 
.80 
trace 
.09 
.21 
3.34 
.02 
.90 
.22 
6.52 
.14 
trace 
2.43 
2.11 
none 
.13 
.15 
none 
.18 
.15 
.03 
.56 
98.46 
&8.34 
52. 25 
18.35 
.35 
.25 
(?) 
1.77 
2.85 
(?) 
.72 
.20 
6.73 
.09 
(?) 
2.59 
3.06 
none 
.25 
.20 
.12 
.23 
.06 
.10 
.33 
98.84 
c 19. 00 
47.42 
15.76 
.40 
none 
.08 
.72 
57 
2. 
(?) 
(?) 
1.85 
2.79 
none 
.18 
.22 
.18 
.18 
.13 
(?) 
none 
99.01 
11 
10.33 
54. 00 
18.05 
.05 
none 
.29 
.42 
1.86 
trace 
2.83 
.14 
5.46 
.13 
trace 
3.16 
2.21 
none 
.07 
trace 
none 
.05 
.20 
(?) 
none 
99. 25 
(0 
52.28 
17.50 
trace 
none 
(?) 
3. 36 
1.85 
trace 
3.21 
.17 
5. 11 
.02? 
(?) 
4.52 
3.49 
(-0 
20.51 
7.20 
none 
none 
.08? 
.25 
1.64 
(?) 
.29 
.07 
1.51 
.01 
(?) 
1.85 
9-1.64 
h . 19 
.09 
trace 
none 
.04 
.07 
.06? 
a Containing 0.54 H»0, 0.09 V0O3. 
&The insoluble matter had "the following composition: SiOo, 5.18; Vo0 3 , 0.21; P 2 5 , 0.09; K»0, 0.26; 
a 2 0, 0.04; H 2 0, 105°, 0.56, 350°, 0.32, +350°, 0.48; A1 2 3> Ti0 2 , Cr 2 3 , etc., by diff., 1.20. The SO3 of this 
e is not combined with BaO, for it is wholly extracted by dilute acids. Once in solution the acid 
>ed is sufficient to prevent its immediate precipitation as BaS0 4 by union with some of the barium 
•esent. The same holds true for the S0 3 of I-c. 
cThis material was obtained by floating off the finer matter, allowing it to settle, collecting on a 
x>ch filter, and drying it in a current of air drawn through the crucible. The insoluble matter held 
addition to 16.41 quartz and silicates (including 0.39 V«0 3 and a little U0 3 ), H 2 0, 105°, 0.83; 300°, 
73; +300°, 1.03; total H.,<>, 2.59. 
Containing 0.10 V.,() 3 and 1.90 H 2 0. 
eThe insoluble matter contained besides quartz and silicates: 0.25 V 2 3 , 0.21 K 2 0, 0.05 Na 2 0. 
/"This analysis was made purposely on a relatively poor ore, furnished by Messrs. Poulot and Voille- 
6, with the object of determining, if possible, the composition of the vanadiferous silicate which 
contained (see p. 30). The data for calculating the H 2 values of both analyses are as follows: 
Ore. 
After extrac- 
tion of carno- 
tite by cold, 
dilute nitric; 
acid. 
After extrac- 
tion of resi- 
due by hot 
nitric acid, 
sodium car- 
bonate, etc. 
Oat 105° 
(a) 
3.53 
2.11 
.83 
(6) 
1.68 
.47 
.64 
(c) 
0.02 
■O at 300° 
.03 
■0 above 300° 
.02 
6.47 
2.79 
.07 
furnishes the values for the carnotite as shown in analysis III; b-c gives those for the less sol- 
fe silicate (p. 30). 
At 300°. 
Above 300°. 
