| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.068 | 0.918 | 3.109 | 6.323 |
| Arsenic | As (ppm) | 4.732 | 1.308 | 1.922 | 7.118 |
| Calcium | Ca (wt%) | 0.692 | 0.309 | 0.135 | 1.237 |
| Copper | Cu (ppm) | 14.151 | 5.242 | 3.723 | 25.979 |
| Iron | Fe (wt%) | 3.305 | 0.852 | 1.763 | 5.515 |
| Mercury | Hg (ppm) | 0.073 | 0.024 | 0.047 | 0.154 |
| Magnesium | Mg (wt%) | 0.527 | 0.120 | 0.344 | 0.841 |
| Manganese | Mn (ppm) | 1154.110 | 177.811 | 718.899 | 1505.240 |
| Sodium | Na (wt%) | 0.728 | 0.289 | 0.328 | 1.423 |
| Phosphorus | P (wt%) | 0.064 | 0.022 | 0.034 | 0.142 |
| Lead | Pb (ppm) | 45.581 | 20.726 | 25.228 | 102.053 |
| Selenium | Se (ppm) | 0.528 | 0.106 | 0.280 | 0.775 |
| Titanium | Ti (wt%) | 0.470 | 0.123 | 0.279 | 0.747 |
| Zinc | Zn (ppm) | 139.333 | 29.081 | 81.691 | 220.215 |