| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.443 | 0.707 | 2.200 | 8.087 |
| Arsenic | As (ppm) | 13.308 | 9.351 | 1.149 | 80.620 |
| Calcium | Ca (wt%) | 0.811 | 0.344 | 0.219 | 2.177 |
| Copper | Cu (ppm) | 9.399 | 3.008 | 2.196 | 23.750 |
| Iron | Fe (wt%) | 3.567 | 0.962 | 0.683 | 7.329 |
| Mercury | Hg (ppm) | 0.039 | 0.015 | 0.010 | 0.108 |
| Magnesium | Mg (wt%) | 0.908 | 0.284 | 0.111 | 2.469 |
| Manganese | Mn (ppm) | 1563.460 | 1108.370 | 157.971 | 9356.340 |
| Sodium | Na (wt%) | 1.200 | 0.238 | 0.440 | 2.582 |
| Phosphorus | P (wt%) | 0.065 | 0.023 | 0.010 | 0.260 |
| Lead | Pb (ppm) | 16.744 | 4.009 | 7.297 | 47.153 |
| Selenium | Se (ppm) | 0.191 | 0.092 | 0.100 | 0.652 |
| Titanium | Ti (wt%) | 0.508 | 0.251 | 0.143 | 1.690 |
| Zinc | Zn (ppm) | 86.651 | 21.579 | 17.208 | 167.675 |