| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.463 | 1.243 | 2.702 | 9.808 |
| Arsenic | As (ppm) | 6.273 | 1.769 | 1.313 | 14.178 |
| Calcium | Ca (wt%) | 0.462 | 0.297 | 0.068 | 3.289 |
| Copper | Cu (ppm) | 21.028 | 7.518 | 1.857 | 54.794 |
| Iron | Fe (wt%) | 3.907 | 1.125 | 1.714 | 10.635 |
| Mercury | Hg (ppm) | 0.053 | 0.028 | 0.015 | 0.456 |
| Magnesium | Mg (wt%) | 0.676 | 0.233 | 0.222 | 2.151 |
| Manganese | Mn (ppm) | 736.218 | 348.412 | 225.730 | 4325.270 |
| Sodium | Na (wt%) | 0.501 | 0.250 | 0.148 | 1.920 |
| Phosphorus | P (wt%) | 0.060 | 0.015 | 0.008 | 0.167 |
| Lead | Pb (ppm) | 26.813 | 9.454 | 10.727 | 114.406 |
| Selenium | Se (ppm) | 0.474 | 0.141 | 0.128 | 1.032 |
| Titanium | Ti (wt%) | 0.429 | 0.090 | 0.170 | 0.985 |
| Zinc | Zn (ppm) | 83.985 | 23.767 | 37.262 | 299.574 |