Table 10. Partial chemical composition (wt. percent) of high-REE, low-Fe, and low-F 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; >, greater than]
|
Constituent |
7B31-10 |
7B31-19 |
7B31-23 |
7B37-1 |
|
Al2O3 |
0.26 |
0.30 |
0.24 |
0.36 |
|
1Fe2O3 |
5.00 |
5.71 |
2.14 |
10.01 |
|
MgO |
.12 |
.45 |
.26 |
.36 |
|
CaO |
8.67 |
8.12 |
11.61 |
12.73 |
|
K2O |
* |
* |
* |
* |
|
TiO2 |
.08 |
.15 |
.07 |
.12 |
|
MnO |
.01 |
.03 |
.02 |
.02 |
|
F |
4.49 |
2.41 |
3.28 |
6.38 |
|
BaO |
2.46 |
.54 |
.46 |
.36 |
|
Ce2O3 |
21.08 |
>23.40 |
>23.40 |
18.74 |
|
La2O3 |
15.25 |
16.42 |
15.25 |
12.90 |
|
Nd2O3 |
6.42 |
8.28 |
8.05 |
4.78 |
|
Nb2O5 |
.53 |
.14 |
.01 |
.13 |
|
SrO |
.09 |
.07 |
.08 |
.05 |
|
Total |
64.46 |
>66.02 |
>64.87 |
66.94 |
|
-O=F |
1.89 |
1.01 |
1.38 |
2.69 |
|
Total |
62.57 |
>65.01 |
>63.49 |
64.25 |
|
Total RE2O3 |
42.75 |
>48.10 |
>46.40 |
36.42 |
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Maintained by John Watson
Last updated 12.17.97