| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.344 | 1.001 | 5.453 | 10.400 |
| Arsenic | As (ppm) | 5.319 | 3.957 | 1.771 | 41.422 |
| Calcium | Ca (wt%) | 2.478 | 1.149 | 0.304 | 4.726 |
| Copper | Cu (ppm) | 53.805 | 10.311 | 22.840 | 99.000 |
| Iron | Fe (wt%) | 6.215 | 1.028 | 3.485 | 8.377 |
| Mercury | Hg (ppm) | 0.071 | 0.046 | 0.030 | 0.290 |
| Magnesium | Mg (wt%) | 3.069 | 1.574 | 0.712 | 6.630 |
| Manganese | Mn (ppm) | 1221.780 | 201.550 | 665.324 | 1605.980 |
| Sodium | Na (wt%) | 1.332 | 0.290 | 0.377 | 2.268 |
| Phosphorus | P (wt%) | 0.066 | 0.016 | 0.038 | 0.129 |
| Lead | Pb (ppm) | 17.122 | 21.293 | 2.174 | 127.252 |
| Selenium | Se (ppm) | 0.239 | 0.110 | 0.101 | 0.691 |
| Titanium | Ti (wt%) | 0.518 | 0.093 | 0.282 | 0.758 |
| Zinc | Zn (ppm) | 110.258 | 26.924 | 61.667 | 245.352 |