| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.485 | 0.511 | 5.145 | 7.108 |
| Arsenic | As (ppm) | 4.381 | 1.276 | 2.161 | 7.717 |
| Calcium | Ca (wt%) | 0.998 | 0.226 | 0.700 | 1.482 |
| Copper | Cu (ppm) | 13.894 | 1.832 | 7.832 | 20.435 |
| Iron | Fe (wt%) | 2.800 | 0.241 | 1.893 | 3.168 |
| Mercury | Hg (ppm) | 0.027 | 0.008 | 0.011 | 0.040 |
| Magnesium | Mg (wt%) | 0.654 | 0.052 | 0.542 | 0.747 |
| Manganese | Mn (ppm) | 613.986 | 96.107 | 367.891 | 827.740 |
| Sodium | Na (wt%) | 1.156 | 0.288 | 0.722 | 1.526 |
| Phosphorus | P (wt%) | 0.069 | 0.020 | 0.025 | 0.105 |
| Lead | Pb (ppm) | 17.607 | 1.771 | 11.975 | 20.597 |
| Selenium | Se (ppm) | 0.170 | 0.042 | 0.102 | 0.261 |
| Titanium | Ti (wt%) | 0.435 | 0.030 | 0.329 | 0.492 |
| Zinc | Zn (ppm) | 51.349 | 9.623 | 25.204 | 66.874 |