| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.508 | 0.774 | 1.361 | 5.355 |
| Arsenic | As (ppm) | 4.806 | 1.332 | 1.252 | 8.841 |
| Calcium | Ca (wt%) | 0.381 | 0.284 | 0.062 | 1.762 |
| Copper | Cu (ppm) | 15.477 | 7.978 | 2.838 | 47.228 |
| Iron | Fe (wt%) | 2.571 | 0.653 | 0.733 | 4.446 |
| Mercury | Hg (ppm) | 0.069 | 0.019 | 0.024 | 0.114 |
| Magnesium | Mg (wt%) | 0.370 | 0.121 | 0.115 | 0.718 |
| Manganese | Mn (ppm) | 629.945 | 218.610 | 106.897 | 1243.370 |
| Sodium | Na (wt%) | 0.272 | 0.130 | 0.056 | 0.618 |
| Phosphorus | P (wt%) | 0.034 | 0.009 | 0.017 | 0.059 |
| Lead | Pb (ppm) | 24.014 | 4.879 | 12.113 | 43.140 |
| Selenium | Se (ppm) | 0.231 | 0.069 | 0.108 | 0.489 |
| Titanium | Ti (wt%) | 0.391 | 0.076 | 0.260 | 0.661 |
| Zinc | Zn (ppm) | 59.921 | 16.395 | 14.139 | 112.011 |