| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.275 | 1.178 | 0.674 | 6.521 |
| Arsenic | As (ppm) | 3.559 | 2.305 | 1.124 | 14.842 |
| Calcium | Ca (wt%) | 0.278 | 0.120 | 0.077 | 0.684 |
| Copper | Cu (ppm) | 4.740 | 2.219 | 1.269 | 12.408 |
| Iron | Fe (wt%) | 1.097 | 0.566 | 0.363 | 3.256 |
| Mercury | Hg (ppm) | 2.970 | 5.104 | 0.010 | 34.045 |
| Magnesium | Mg (wt%) | 0.172 | 0.131 | 0.026 | 0.675 |
| Manganese | Mn (ppm) | 195.535 | 67.488 | 98.846 | 530.462 |
| Sodium | Na (wt%) | 0.169 | 0.104 | 0.036 | 0.645 |
| Phosphorus | P (wt%) | 0.038 | 0.020 | 0.009 | 0.088 |
| Lead | Pb (ppm) | 32.001 | 7.611 | 17.644 | 61.423 |
| Selenium | Se (ppm) | 0.364 | 0.158 | 0.124 | 0.863 |
| Titanium | Ti (wt%) | 0.509 | 0.071 | 0.329 | 0.796 |
| Zinc | Zn (ppm) | 56.002 | 41.052 | 8.012 | 176.178 |