| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.066 | 0.455 | 2.876 | 5.011 |
| Arsenic | As (ppm) | 8.348 | 0.615 | 6.326 | 10.880 |
| Calcium | Ca (wt%) | 0.131 | 0.032 | 0.043 | 0.204 |
| Copper | Cu (ppm) | 16.150 | 5.391 | 7.390 | 39.349 |
| Iron | Fe (wt%) | 2.508 | 0.296 | 1.815 | 3.309 |
| Mercury | Hg (ppm) | 0.054 | 0.023 | 0.013 | 0.178 |
| Magnesium | Mg (wt%) | 0.311 | 0.042 | 0.175 | 0.453 |
| Manganese | Mn (ppm) | 664.001 | 214.150 | 241.006 | 1745.000 |
| Sodium | Na (wt%) | 0.229 | 0.045 | 0.121 | 0.355 |
| Phosphorus | P (wt%) | 0.037 | 0.006 | 0.017 | 0.053 |
| Lead | Pb (ppm) | 27.715 | 13.959 | 15.572 | 113.514 |
| Selenium | Se (ppm) | 0.220 | 0.086 | 0.108 | 0.655 |
| Titanium | Ti (wt%) | 0.304 | 0.032 | 0.228 | 0.406 |
| Zinc | Zn (ppm) | 75.080 | 12.481 | 38.178 | 130.864 |