| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.592 | 0.180 | 4.939 | 6.164 |
| Arsenic | As (ppm) | 2.528 | 1.481 | 0.370 | 10.136 |
| Calcium | Ca (wt%) | 1.897 | 0.251 | 1.146 | 2.641 |
| Copper | Cu (ppm) | 11.667 | 3.018 | 4.302 | 22.480 |
| Iron | Fe (wt%) | 2.550 | 0.377 | 1.212 | 3.463 |
| Mercury | Hg (ppm) | 0.078 | 0.021 | 0.030 | 0.222 |
| Magnesium | Mg (wt%) | 0.609 | 0.120 | 0.202 | 0.959 |
| Manganese | Mn (ppm) | 828.365 | 125.256 | 378.368 | 1441.260 |
| Sodium | Na (wt%) | 1.578 | 0.117 | 1.258 | 1.911 |
| Phosphorus | P (wt%) | 0.074 | 0.024 | 0.029 | 0.211 |
| Lead | Pb (ppm) | 39.788 | 8.838 | 26.362 | 82.287 |
| Selenium | Se (ppm) | 0.491 | 0.132 | 0.213 | 0.987 |
| Titanium | Ti (wt%) | 0.504 | 0.074 | 0.274 | 0.862 |
| Zinc | Zn (ppm) | 52.711 | 14.831 | 21.805 | 116.125 |