| Elemental composition (%) | Sample | |||||||
|---|---|---|---|---|---|---|---|---|
| 1-AM19 | 1-AM28 | 1-AM37 | 1-AM46 | 2-AM19 | 2-AM28 | 2-AM37 | 2-AM46 | |
| Carbon | 39.09 | 26.98 | 34.42 | 42.37 | 24.97 | 33.88 | 35.37 | 47.95 |
| Nitrogen | 1.70 | 2.19 | 2.00 | 1.80 | 2.43 | 1.91 | 2.33 | 0.88 |
| Oxygen | 44.59 | 50.80 | 47.41 | 42.04 | 52.43 | 47.21 | 45.96 | 39.15 |
| Titanium | 5.82 | 6.55 | 4.92 | 8.18 | 8.24 | 6.63 | 9.35 | 6.97 |
| Manganese | 6.97 | 6.24 | 5.77 | 3.48 | 6.34 | 4.91 | 4.43 | 2.97 |
| Silver | 0.36 | 0.62 | 0.62 | 0.75 | 0.41 | 0.42 | 0.44 | 0.47 |