| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.540 | 0.189 | 4.954 | 6.320 |
| Arsenic | As (ppm) | 7.458 | 1.478 | 3.351 | 10.904 |
| Calcium | Ca (wt%) | 0.215 | 0.076 | 0.109 | 0.557 |
| Copper | Cu (ppm) | 11.182 | 1.702 | 7.995 | 17.428 |
| Iron | Fe (wt%) | 2.812 | 0.186 | 2.250 | 3.197 |
| Mercury | Hg (ppm) | 0.031 | 0.005 | 0.018 | 0.050 |
| Magnesium | Mg (wt%) | 0.381 | 0.030 | 0.320 | 0.478 |
| Manganese | Mn (ppm) | 685.149 | 127.480 | 336.181 | 955.481 |
| Sodium | Na (wt%) | 0.552 | 0.032 | 0.451 | 0.625 |
| Phosphorus | P (wt%) | 0.049 | 0.005 | 0.036 | 0.069 |
| Lead | Pb (ppm) | 20.929 | 1.381 | 17.275 | 23.784 |
| Selenium | Se (ppm) | 0.343 | 0.034 | 0.219 | 0.413 |
| Titanium | Ti (wt%) | 0.315 | 0.016 | 0.261 | 0.364 |
| Zinc | Zn (ppm) | 71.370 | 3.438 | 58.325 | 78.381 |