| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.100 | 0.601 | 1.850 | 4.744 |
| Arsenic | As (ppm) | 5.044 | 1.966 | 2.003 | 12.362 |
| Calcium | Ca (wt%) | 0.103 | 0.032 | 0.045 | 0.263 |
| Copper | Cu (ppm) | 7.014 | 3.610 | 2.004 | 17.740 |
| Iron | Fe (wt%) | 1.452 | 0.407 | 0.521 | 2.637 |
| Mercury | Hg (ppm) | 0.052 | 0.021 | 0.010 | 0.128 |
| Magnesium | Mg (wt%) | 0.260 | 0.072 | 0.109 | 0.450 |
| Manganese | Mn (ppm) | 978.958 | 430.459 | 82.388 | 2673.290 |
| Sodium | Na (wt%) | 0.535 | 0.115 | 0.215 | 0.788 |
| Phosphorus | P (wt%) | 0.037 | 0.009 | 0.010 | 0.058 |
| Lead | Pb (ppm) | 18.917 | 4.420 | 9.136 | 31.345 |
| Selenium | Se (ppm) | 0.261 | 0.101 | 0.100 | 0.503 |
| Titanium | Ti (wt%) | 0.272 | 0.039 | 0.125 | 0.336 |
| Zinc | Zn (ppm) | 84.685 | 32.194 | 25.567 | 209.135 |