| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.562 | 1.009 | 3.639 | 10.280 |
| Arsenic | As (ppm) | 6.800 | 1.553 | 1.999 | 12.005 |
| Calcium | Ca (wt%) | 0.876 | 0.664 | 0.099 | 4.648 |
| Copper | Cu (ppm) | 45.126 | 18.922 | 8.875 | 117.201 |
| Iron | Fe (wt%) | 4.197 | 1.070 | 2.248 | 9.081 |
| Mercury | Hg (ppm) | 0.080 | 0.065 | 0.011 | 0.869 |
| Magnesium | Mg (wt%) | 1.732 | 1.129 | 0.462 | 10.541 |
| Manganese | Mn (ppm) | 873.202 | 286.349 | 189.000 | 1991.380 |
| Sodium | Na (wt%) | 1.369 | 0.411 | 0.163 | 2.197 |
| Phosphorus | P (wt%) | 0.085 | 0.030 | 0.018 | 0.222 |
| Lead | Pb (ppm) | 12.789 | 5.915 | 4.776 | 65.605 |
| Selenium | Se (ppm) | 0.299 | 0.145 | 0.100 | 0.931 |
| Titanium | Ti (wt%) | 0.378 | 0.057 | 0.186 | 0.629 |
| Zinc | Zn (ppm) | 99.310 | 16.762 | 45.704 | 172.367 |