| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.578 | 0.715 | 2.475 | 5.209 |
| Arsenic | As (ppm) | 1.678 | 0.430 | 0.755 | 2.867 |
| Calcium | Ca (wt%) | 0.289 | 0.203 | 0.075 | 0.799 |
| Copper | Cu (ppm) | 10.083 | 1.989 | 6.394 | 16.544 |
| Iron | Fe (wt%) | 2.848 | 0.556 | 1.652 | 4.788 |
| Mercury | Hg (ppm) | 0.065 | 0.027 | 0.026 | 0.158 |
| Magnesium | Mg (wt%) | 0.167 | 0.028 | 0.123 | 0.251 |
| Manganese | Mn (ppm) | 784.968 | 193.137 | 508.580 | 1344.050 |
| Sodium | Na (wt%) | 0.248 | 0.147 | 0.048 | 0.610 |
| Phosphorus | P (wt%) | 0.054 | 0.023 | 0.018 | 0.125 |
| Lead | Pb (ppm) | 24.810 | 4.949 | 15.796 | 38.519 |
| Selenium | Se (ppm) | 0.132 | 0.026 | 0.102 | 0.207 |
| Titanium | Ti (wt%) | 0.650 | 0.091 | 0.432 | 0.933 |
| Zinc | Zn (ppm) | 39.774 | 5.644 | 26.170 | 52.059 |