| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.781 | 0.391 | 5.096 | 6.512 |
| Arsenic | As (ppm) | 2.305 | 0.486 | 1.042 | 3.405 |
| Calcium | Ca (wt%) | 3.171 | 1.154 | 1.799 | 7.580 |
| Copper | Cu (ppm) | 16.304 | 4.568 | 9.670 | 24.625 |
| Iron | Fe (wt%) | 3.143 | 0.556 | 2.233 | 4.048 |
| Mercury | Hg (ppm) | 0.091 | 0.029 | 0.038 | 0.148 |
| Magnesium | Mg (wt%) | 0.794 | 0.120 | 0.599 | 1.165 |
| Manganese | Mn (ppm) | 611.727 | 62.828 | 418.050 | 745.095 |
| Sodium | Na (wt%) | 1.583 | 0.102 | 1.312 | 1.770 |
| Phosphorus | P (wt%) | 0.096 | 0.007 | 0.083 | 0.112 |
| Lead | Pb (ppm) | 50.570 | 18.410 | 25.539 | 83.127 |
| Selenium | Se (ppm) | 0.232 | 0.117 | 0.101 | 0.592 |
| Titanium | Ti (wt%) | 0.633 | 0.117 | 0.416 | 0.802 |
| Zinc | Zn (ppm) | 90.342 | 21.290 | 54.325 | 143.475 |