| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.200 | 1.082 | 2.290 | 8.520 |
| Arsenic | As (ppm) | 7.868 | 4.193 | 2.162 | 42.707 |
| Calcium | Ca (wt%) | 3.321 | 2.443 | 0.324 | 13.400 |
| Copper | Cu (ppm) | 22.476 | 21.137 | 3.460 | 260.394 |
| Iron | Fe (wt%) | 2.387 | 1.194 | 0.940 | 12.725 |
| Mercury | Hg (ppm) | 0.042 | 0.026 | 0.010 | 0.273 |
| Magnesium | Mg (wt%) | 1.000 | 0.586 | 0.283 | 7.456 |
| Manganese | Mn (ppm) | 676.910 | 450.496 | 138.269 | 4923.870 |
| Sodium | Na (wt%) | 1.026 | 0.358 | 0.294 | 2.713 |
| Phosphorus | P (wt%) | 0.082 | 0.036 | 0.018 | 0.241 |
| Lead | Pb (ppm) | 32.885 | 61.594 | 7.689 | 679.588 |
| Selenium | Se (ppm) | 0.498 | 0.812 | 0.100 | 8.097 |
| Titanium | Ti (wt%) | 0.278 | 0.078 | 0.131 | 0.560 |
| Zinc | Zn (ppm) | 86.461 | 80.739 | 17.272 | 653.630 |