| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.087 | 1.139 | 0.531 | 6.687 |
| Arsenic | As (ppm) | 5.821 | 2.155 | 1.943 | 11.418 |
| Calcium | Ca (wt%) | 0.101 | 0.028 | 0.016 | 0.259 |
| Copper | Cu (ppm) | 11.657 | 3.889 | 1.926 | 23.047 |
| Iron | Fe (wt%) | 2.007 | 0.851 | 0.343 | 4.859 |
| Mercury | Hg (ppm) | 0.050 | 0.013 | 0.016 | 0.094 |
| Magnesium | Mg (wt%) | 0.297 | 0.140 | 0.026 | 0.901 |
| Manganese | Mn (ppm) | 372.311 | 103.288 | 55.075 | 729.425 |
| Sodium | Na (wt%) | 0.178 | 0.061 | 0.024 | 0.372 |
| Phosphorus | P (wt%) | 0.030 | 0.008 | 0.007 | 0.069 |
| Lead | Pb (ppm) | 35.783 | 37.361 | 4.400 | 450.349 |
| Selenium | Se (ppm) | 0.483 | 0.190 | 0.120 | 1.890 |
| Titanium | Ti (wt%) | 0.214 | 0.027 | 0.123 | 0.296 |
| Zinc | Zn (ppm) | 49.188 | 16.744 | 6.497 | 91.606 |