| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.103 | 0.337 | 4.889 | 6.773 |
| Arsenic | As (ppm) | 7.924 | 3.009 | 1.737 | 15.259 |
| Calcium | Ca (wt%) | 1.020 | 0.335 | 0.563 | 2.758 |
| Copper | Cu (ppm) | 21.011 | 8.700 | 4.116 | 74.785 |
| Iron | Fe (wt%) | 2.552 | 0.361 | 1.943 | 4.306 |
| Mercury | Hg (ppm) | 0.061 | 0.053 | 0.024 | 0.495 |
| Magnesium | Mg (wt%) | 1.013 | 0.273 | 0.538 | 1.536 |
| Manganese | Mn (ppm) | 517.823 | 162.047 | 230.222 | 1511.120 |
| Sodium | Na (wt%) | 1.213 | 0.193 | 0.763 | 1.795 |
| Phosphorus | P (wt%) | 0.056 | 0.009 | 0.021 | 0.084 |
| Lead | Pb (ppm) | 54.677 | 150.453 | 13.213 | 1316.670 |
| Selenium | Se (ppm) | 0.415 | 0.108 | 0.110 | 0.687 |
| Titanium | Ti (wt%) | 0.275 | 0.041 | 0.205 | 0.509 |
| Zinc | Zn (ppm) | 67.082 | 57.593 | 15.915 | 544.692 |