| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 1.005 | 0.343 | 0.504 | 2.799 |
| Arsenic | As (ppm) | 2.108 | 0.931 | 0.378 | 6.052 |
| Calcium | Ca (wt%) | 0.160 | 0.113 | 0.032 | 0.712 |
| Copper | Cu (ppm) | 5.050 | 2.943 | 1.028 | 22.231 |
| Iron | Fe (wt%) | 0.640 | 0.183 | 0.230 | 1.085 |
| Mercury | Hg (ppm) | 0.094 | 0.181 | 0.010 | 1.211 |
| Magnesium | Mg (wt%) | 0.031 | 0.017 | 0.010 | 0.113 |
| Manganese | Mn (ppm) | 172.007 | 69.059 | 30.155 | 335.000 |
| Sodium | Na (wt%) | 0.114 | 0.085 | 0.019 | 0.395 |
| Phosphorus | P (wt%) | 0.014 | 0.012 | 0.003 | 0.084 |
| Lead | Pb (ppm) | 21.553 | 26.866 | 4.238 | 190.319 |
| Selenium | Se (ppm) | 0.214 | 0.142 | 0.100 | 0.900 |
| Titanium | Ti (wt%) | 0.664 | 0.186 | 0.213 | 1.068 |
| Zinc | Zn (ppm) | 18.852 | 20.741 | 2.118 | 146.418 |