| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.832 | 0.351 | 3.985 | 6.742 |
| Arsenic | As (ppm) | 3.489 | 1.782 | 0.733 | 12.960 |
| Calcium | Ca (wt%) | 1.389 | 0.361 | 0.653 | 2.344 |
| Copper | Cu (ppm) | 19.942 | 4.085 | 10.066 | 53.188 |
| Iron | Fe (wt%) | 3.136 | 0.426 | 2.286 | 5.264 |
| Mercury | Hg (ppm) | 0.088 | 0.035 | 0.018 | 0.271 |
| Magnesium | Mg (wt%) | 0.656 | 0.145 | 0.365 | 1.122 |
| Manganese | Mn (ppm) | 1477.290 | 240.102 | 922.979 | 2348.230 |
| Sodium | Na (wt%) | 1.730 | 0.235 | 1.363 | 2.708 |
| Phosphorus | P (wt%) | 0.071 | 0.015 | 0.031 | 0.109 |
| Lead | Pb (ppm) | 50.658 | 15.865 | 23.385 | 131.916 |
| Selenium | Se (ppm) | 0.556 | 0.248 | 0.141 | 1.426 |
| Titanium | Ti (wt%) | 0.542 | 0.103 | 0.326 | 0.819 |
| Zinc | Zn (ppm) | 88.876 | 24.706 | 30.114 | 242.201 |