| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.125 | 0.617 | 3.065 | 5.490 |
| Arsenic | As (ppm) | 7.055 | 1.776 | 4.894 | 12.238 |
| Calcium | Ca (wt%) | 0.850 | 0.408 | 0.179 | 1.545 |
| Copper | Cu (ppm) | 14.717 | 2.319 | 9.806 | 19.406 |
| Iron | Fe (wt%) | 2.896 | 0.284 | 2.379 | 3.600 |
| Mercury | Hg (ppm) | 0.348 | 0.427 | 0.036 | 2.690 |
| Magnesium | Mg (wt%) | 0.338 | 0.030 | 0.263 | 0.384 |
| Manganese | Mn (ppm) | 821.408 | 65.593 | 638.638 | 961.939 |
| Sodium | Na (wt%) | 0.156 | 0.068 | 0.050 | 0.325 |
| Phosphorus | P (wt%) | 0.035 | 0.006 | 0.019 | 0.054 |
| Lead | Pb (ppm) | 55.360 | 13.548 | 28.386 | 79.881 |
| Selenium | Se (ppm) | 0.288 | 0.023 | 0.238 | 0.334 |
| Titanium | Ti (wt%) | 0.322 | 0.022 | 0.272 | 0.363 |
| Zinc | Zn (ppm) | 56.437 | 7.826 | 39.483 | 76.395 |