Table 8. Partial chemical composition (wt. percent) of bastnaesite-apatite-aegirine augite-fluoritemartite banded ores with apatitebarite of Bayan Obo.
[Analysts: J.E. Taggart, A. Bartel, and D. Siems. Analysis by inductively coupled plasma-atomic emission spectrometry (ICP-AES) for all oxides reported; SiO2, Na2O, P2O5, and CO2 were not determined.
Analysts: J. Sharkey and E. Brandt. Analysis by ion-selective electrode (ISE) for F.
*, below minimum detection level (MDL); MDL for K2O=0.24]
|
Constituent |
7B30-3 |
7B30-16A |
7B30-16B |
7B30-25 |
7B30-26 |
7B30-44 |
7B30-45A |
7B30-45B |
|
Al2O3 |
0.26 |
0.13 |
0.11 |
0.17 |
0.53 |
0.26 |
0.25 |
1.57 |
|
1Fe2O3 |
15.73 |
7.43 |
10.29 |
8.72 |
17.16 |
20.0 |
13.87 |
6.86 |
|
MgO |
.08 |
.08 |
.03 |
.07 |
.17 |
.08 |
.07 |
.13 |
|
CaO |
10.07 |
37.78 |
32.18 |
27.98 |
2.94 |
18.19 |
27.98 |
33.58 |
|
K2O |
* |
* |
* |
* |
* |
* |
* |
.96 |
|
TiO2 |
.20 |
.10 |
.05 |
.17 |
.70 |
.12 |
.15 |
.13 |
|
MnO |
.04 |
.04 |
.02 |
.02 |
.03 |
.03 |
.03 |
.01 |
|
F |
1.68 |
16.0 |
13.6 |
16.0 |
1.02 |
10.20 |
14.4 |
15.0 |
|
BaO |
3.24 |
3.01 |
3.13 |
4.35 |
5.69 |
2.01 |
3.80 |
6.48 |
|
Ce2O3 |
8.90 |
4.45 |
6.44 |
4.45 |
6.44 |
1.64 |
5.04 |
3.28 |
|
La2O3 |
5.98 |
2.35 |
4.93 |
1.99 |
3.40 |
.82 |
2.23 |
1.41 |
|
Nd2O3 |
2.57 |
1.28 |
1.63 |
1.40 |
1.75 |
.59 |
1.40 |
.98 |
|
Nb2O5 |
.29 |
.02 |
.02 |
.06 |
.54 |
.01 |
.02 |
.07 |
|
SrO |
.28 |
.13 |
.13 |
.18 |
.17 |
.11 |
.10 |
.17 |
|
Total |
49.32 |
72.80 |
72.56 |
65.56 |
40.54 |
54.06 |
69.34 |
70.63 |
|
-O=F |
0.71 |
6.74 |
5.73 |
6.74 |
0.93 |
4.29 |
6.06 |
6.32 |
|
Total |
48.61 |
66.06 |
66.83 |
58.82 |
40.11 |
49.77 |
63.28 |
64.31 |
|
Total RE2O3 |
17.45 |
8.08 |
13.00 |
7.84 |
11.59 |
3.05 |
8.67 |
5.67 |
This page is https://pubs.usgs.gov/bulletin/b2143/table8.html
Maintained by John Watson
Last updated 12.17.97