| Element | HT | OMF | ||
| % mass | % atomic | % mass | % atomic | |
| B | 2.37 | 12.52 | 2.27 | 12.21 |
| O | 2.18 | 7.80 | 1.88 | 6.82 |
| Fe | 66.61 | 68.18 | 66.27 | 68.98 |
| Pr | 6.52 | 2.64 | 6.69 | 2.76 |
| Nd | 22.32 | 8.85 | 22.88 | 9.22 |
| Total | 100.00 | 99.99 | 99.99 | 99.99 |