Table 11. Partial chemical composition (wt. percent) of marble-hosted alkali amphibole-magnetite 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 TiO2=0.03]
|
Constituent |
7B33-5 |
7B33-6A |
7B33-6B |
7B33-7 |
|
Al2O3 |
0.17 |
0.28 |
0.36 |
0.25 |
|
1Fe2O3 |
17.16 |
17.16 |
15.73 |
24.31 |
|
MgO |
4.64 |
4.97 |
5.31 |
4.81 |
|
CaO |
20.99 |
19.59 |
19.59 |
19.59 |
|
K2O |
.48 |
.60 |
.72 |
.48 |
|
TiO2 |
.03 |
* |
.03 |
.03 |
|
MnO |
3.49 |
4.26 |
5.42 |
3.87 |
|
F |
9.58 |
9.58 |
7.98 |
7.18 |
|
BaO |
.02 |
.04 |
.04 |
.03 |
|
Ce2O3 |
2.22 |
1.76 |
2.46 |
2.11 |
|
La2O3 |
.96 |
.83 |
1.17 |
.88 |
|
Nd2O3 |
.97 |
.76 |
.98 |
.86 |
|
Nb2O5 |
.01 |
.01 |
.01 |
.01 |
|
SrO |
.11 |
.13 |
.11 |
.13 |
|
Total |
60.83 |
59.97 |
59.91 |
64.54 |
|
-O=F |
4.03 |
4.03 |
3.36 |
3.02 |
|
Total |
56.80 |
55.94 |
56.55 |
61.52 |
|
Total RE2O3 |
4.15 |
3.35 |
4.61 |
3.85 |
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Maintained by John Watson
Last updated 12.17.97