| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.241 | 0.758 | 0.689 | 5.706 |
| Arsenic | As (ppm) | 2.976 | 0.747 | 0.748 | 5.895 |
| Calcium | Ca (wt%) | 0.063 | 0.020 | 0.008 | 0.123 |
| Copper | Cu (ppm) | 7.707 | 1.651 | 1.244 | 13.995 |
| Iron | Fe (wt%) | 0.931 | 0.211 | 0.142 | 1.604 |
| Mercury | Hg (ppm) | 0.027 | 0.007 | 0.010 | 0.056 |
| Magnesium | Mg (wt%) | 0.048 | 0.011 | 0.009 | 0.093 |
| Manganese | Mn (ppm) | 322.414 | 155.245 | 32.953 | 801.344 |
| Sodium | Na (wt%) | 0.008 | 0.003 | 0.003 | 0.018 |
| Phosphorus | P (wt%) | 0.034 | 0.012 | 0.003 | 0.083 |
| Lead | Pb (ppm) | 20.051 | 4.789 | 7.286 | 40.947 |
| Selenium | Se (ppm) | 0.298 | 0.052 | 0.203 | 0.475 |
| Titanium | Ti (wt%) | 0.423 | 0.067 | 0.234 | 0.692 |
| Zinc | Zn (ppm) | 26.169 | 6.557 | 5.583 | 52.990 |