| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.742 | 1.534 | 5.307 | 12.704 |
| Arsenic | As (ppm) | 9.737 | 12.022 | 0.346 | 73.422 |
| Calcium | Ca (wt%) | 2.487 | 1.558 | 0.123 | 7.537 |
| Copper | Cu (ppm) | 51.181 | 20.495 | 20.425 | 134.781 |
| Iron | Fe (wt%) | 7.388 | 2.744 | 3.048 | 19.229 |
| Mercury | Hg (ppm) | 0.100 | 0.043 | 0.030 | 0.277 |
| Magnesium | Mg (wt%) | 3.255 | 1.685 | 0.958 | 7.237 |
| Manganese | Mn (ppm) | 1283.460 | 424.260 | 208.805 | 3759.720 |
| Sodium | Na (wt%) | 0.844 | 0.288 | 0.092 | 1.881 |
| Phosphorus | P (wt%) | 0.062 | 0.012 | 0.030 | 0.108 |
| Lead | Pb (ppm) | 10.665 | 5.894 | 2.709 | 37.493 |
| Selenium | Se (ppm) | 0.362 | 0.221 | 0.103 | 1.191 |
| Titanium | Ti (wt%) | 0.434 | 0.071 | 0.293 | 0.630 |
| Zinc | Zn (ppm) | 90.356 | 20.086 | 39.845 | 150.121 |