| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.227 | 0.507 | 2.445 | 6.765 |
| Arsenic | As (ppm) | 5.803 | 1.156 | 2.544 | 12.310 |
| Calcium | Ca (wt%) | 1.861 | 1.252 | 0.569 | 10.605 |
| Copper | Cu (ppm) | 15.549 | 2.833 | 6.103 | 26.450 |
| Iron | Fe (wt%) | 2.077 | 0.177 | 1.329 | 2.563 |
| Mercury | Hg (ppm) | 0.020 | 0.005 | 0.010 | 0.047 |
| Magnesium | Mg (wt%) | 0.755 | 0.284 | 0.302 | 2.687 |
| Manganese | Mn (ppm) | 465.152 | 44.384 | 341.294 | 605.149 |
| Sodium | Na (wt%) | 0.783 | 0.130 | 0.247 | 1.520 |
| Phosphorus | P (wt%) | 0.084 | 0.035 | 0.040 | 0.430 |
| Lead | Pb (ppm) | 19.320 | 3.033 | 10.775 | 30.784 |
| Selenium | Se (ppm) | 0.197 | 0.089 | 0.102 | 1.062 |
| Titanium | Ti (wt%) | 0.261 | 0.020 | 0.154 | 0.339 |
| Zinc | Zn (ppm) | 74.555 | 31.891 | 45.319 | 405.846 |