| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.202 | 0.634 | 2.142 | 5.948 |
| Arsenic | As (ppm) | 6.181 | 1.624 | 3.304 | 10.799 |
| Calcium | Ca (wt%) | 1.916 | 2.131 | 0.132 | 13.409 |
| Copper | Cu (ppm) | 19.176 | 3.616 | 9.077 | 30.126 |
| Iron | Fe (wt%) | 3.102 | 0.642 | 1.573 | 5.247 |
| Mercury | Hg (ppm) | 0.100 | 0.041 | 0.031 | 0.204 |
| Magnesium | Mg (wt%) | 0.560 | 0.171 | 0.233 | 1.194 |
| Manganese | Mn (ppm) | 1050.880 | 296.519 | 252.650 | 2307.430 |
| Sodium | Na (wt%) | 0.242 | 0.121 | 0.034 | 0.752 |
| Phosphorus | P (wt%) | 0.053 | 0.010 | 0.022 | 0.093 |
| Lead | Pb (ppm) | 27.941 | 3.142 | 12.149 | 35.693 |
| Selenium | Se (ppm) | 0.368 | 0.073 | 0.122 | 0.654 |
| Titanium | Ti (wt%) | 0.332 | 0.070 | 0.167 | 0.620 |
| Zinc | Zn (ppm) | 84.493 | 16.795 | 39.387 | 137.619 |