| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.076 | 0.372 | 5.228 | 6.780 |
| Arsenic | As (ppm) | 2.012 | 2.217 | 0.300 | 12.717 |
| Calcium | Ca (wt%) | 2.341 | 0.523 | 1.465 | 3.932 |
| Copper | Cu (ppm) | 1.726 | 0.966 | 1.000 | 5.603 |
| Iron | Fe (wt%) | 5.163 | 1.122 | 3.106 | 8.051 |
| Mercury | Hg (ppm) | 0.034 | 0.011 | 0.010 | 0.069 |
| Magnesium | Mg (wt%) | 1.024 | 0.198 | 0.673 | 1.960 |
| Manganese | Mn (ppm) | 1079.610 | 271.543 | 607.139 | 1826.490 |
| Sodium | Na (wt%) | 1.499 | 0.142 | 1.188 | 1.820 |
| Phosphorus | P (wt%) | 0.047 | 0.010 | 0.022 | 0.089 |
| Lead | Pb (ppm) | 31.535 | 4.831 | 25.147 | 47.317 |
| Selenium | Se (ppm) | 0.171 | 0.057 | 0.100 | 0.434 |
| Titanium | Ti (wt%) | 0.815 | 0.078 | 0.603 | 1.015 |
| Zinc | Zn (ppm) | 69.155 | 11.255 | 41.737 | 94.678 |