| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.484 | 0.803 | 0.949 | 6.298 |
| Arsenic | As (ppm) | 12.813 | 5.162 | 3.293 | 30.018 |
| Calcium | Ca (wt%) | 0.371 | 0.113 | 0.125 | 1.003 |
| Copper | Cu (ppm) | 9.899 | 2.173 | 1.386 | 20.413 |
| Iron | Fe (wt%) | 2.725 | 0.805 | 0.642 | 4.937 |
| Mercury | Hg (ppm) | 0.349 | 0.493 | 0.006 | 3.198 |
| Magnesium | Mg (wt%) | 0.215 | 0.062 | 0.055 | 0.429 |
| Manganese | Mn (ppm) | 891.088 | 235.288 | 299.810 | 1872.040 |
| Sodium | Na (wt%) | 0.109 | 0.023 | 0.032 | 0.176 |
| Phosphorus | P (wt%) | 0.046 | 0.008 | 0.013 | 0.070 |
| Lead | Pb (ppm) | 22.924 | 4.973 | 6.738 | 52.920 |
| Selenium | Se (ppm) | 0.508 | 0.217 | 0.120 | 1.343 |
| Titanium | Ti (wt%) | 0.234 | 0.039 | 0.094 | 0.360 |
| Zinc | Zn (ppm) | 62.336 | 12.106 | 18.856 | 104.345 |