| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.687 | 1.281 | 1.060 | 10.446 |
| Arsenic | As (ppm) | 5.833 | 1.962 | 2.321 | 13.512 |
| Calcium | Ca (wt%) | 0.339 | 0.235 | 0.050 | 1.428 |
| Copper | Cu (ppm) | 15.496 | 27.707 | 2.787 | 221.230 |
| Iron | Fe (wt%) | 1.523 | 0.394 | 0.754 | 3.307 |
| Mercury | Hg (ppm) | 0.026 | 0.014 | 0.010 | 0.088 |
| Magnesium | Mg (wt%) | 0.131 | 0.047 | 0.042 | 0.381 |
| Manganese | Mn (ppm) | 479.673 | 149.220 | 200.695 | 1217.420 |
| Sodium | Na (wt%) | 0.061 | 0.026 | 0.024 | 0.248 |
| Phosphorus | P (wt%) | 0.020 | 0.008 | 0.009 | 0.056 |
| Lead | Pb (ppm) | 22.512 | 17.176 | 6.531 | 173.059 |
| Selenium | Se (ppm) | 0.204 | 0.076 | 0.100 | 0.429 |
| Titanium | Ti (wt%) | 0.288 | 0.054 | 0.152 | 0.470 |
| Zinc | Zn (ppm) | 46.433 | 35.855 | 15.567 | 327.403 |