Table 9. Partial chemical composition (wt. percent) of high-Fe, REE, and fluorite banded ores of Bayan Obo.
[Analyst: P.H. Briggs. 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 |
7B30-28A |
7B30-28B |
7B30-37 |
7B31-14 |
|
Al2O3 |
0.25 |
0.17 |
0.13 |
0.09 |
|
1Fe2O3 |
24.31 |
37.17 |
45.75 |
35.7 |
|
MgO |
.25 |
.25 |
.07 |
.10 |
|
CaO |
8.40 |
3.92 |
1.32 |
7.70 |
|
K2O |
* |
* |
* |
* |
|
TiO2 |
.47 |
.23 |
.07 |
.75 |
|
MnO |
.04 |
.02 |
.02 |
.04 |
|
F |
3.98 |
1.68 |
.54 |
4.38 |
|
BaO |
4.24 |
2.79 |
3.91 |
.39 |
|
Ce2O3 |
11.24 |
5.50 |
1.17 |
9.14 |
|
La2O3 |
8.09 |
3.87 |
.46 |
6.33 |
|
Nd2O3 |
3.03 |
1.52 |
.40 |
2.33 |
|
Nb2O5 |
.14 |
.05 |
.01 |
.18 |
|
SrO |
.15 |
.07 |
.03 |
.03 |
|
Total |
64.59 |
57.24 |
53.88 |
67.16 |
|
-O=F |
1.68 |
0.71 |
0.23 |
1.84 |
|
Total |
62.91 |
56.53 |
53.65 |
65.32 |
|
Total RE2O3 |
22.36 |
10.89 |
2.03 |
17.80 |
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Maintained by John Watson
Last updated 12.17.97