Table 3 Chemical composition obtained by SEM–EDS expressed as atomic percentage (point analysis)
O | C | Na | Mg | Al | Si | P | K | Ca | Fe | Cu | |
|---|---|---|---|---|---|---|---|---|---|---|---|
Livia’s 2.1—spectrum 1 | 63.0 | – | – | – | – | 25.5 | – | – | 5.8 | – | 4.9 |
Livia’s 2.2—spectrum 2 | 63.1 | – | – | – | – | 25.0 | – | – | 6.1 | – | 4.9 |
Livia’s 4—spectrum 1 | 59.9 | 13.9 | – | – | – | – | 9.8 | – | 14.3 | – | – |
Livia’s 4—spectrum 2 | 60.3 | 14.7 | – | – | – | – | 9.8 | – | 13.8 | – | – |
Livia’s 1—spectrum 1 | 53.6 | 13.1 | 5.2 | – | 8.4 | 17.6 | – | – | 1.6 | – | – |
Livia’s 1—spectrum 2 | 59.5 | 22.1 | – | – | 10.1 | – | – | – | 1.9 | – | – |
Livia’s 1—spectrum 3 | 42.4 | 46.9 | – | 6.1 | – | – | – | – | 3.8 | – | – |
Livia’s 1—spectrum 4 | 51.7 | 35.7 | – | 5.2 | – | – | – | – | 7.4 | – | – |
Livia’s 1—spectrum 5 | 19.3 | 73.3 | – | – | 1.6 | 4.6 | – | 1.2 | 0.5 | – | – |
Livia’s 1—spectrum 6 | 46.1 | 44.1 | – | – | – | 2.9 | – | – | 3.0 | 3.9 | – |
Livia’s 1—spectrum 7 | 70.01 | – | – | 6.3 | 7.9 | 7.5 | – | – | 8.3 | – | |
Livia’s 1—spectrum 8 | 34.4 | 55.0 | – | 1.2 | 1.5 | 6.0 | – | 0.4 | – | 0.9 | – |