| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.432 | 0.857 | 4.490 | 9.149 |
| Arsenic | As (ppm) | 4.108 | 3.373 | 0.988 | 26.459 |
| Calcium | Ca (wt%) | 1.803 | 0.357 | 0.705 | 3.315 |
| Copper | Cu (ppm) | 12.650 | 6.365 | 3.228 | 43.286 |
| Iron | Fe (wt%) | 3.299 | 0.889 | 1.601 | 6.569 |
| Mercury | Hg (ppm) | 0.031 | 0.017 | 0.010 | 0.106 |
| Magnesium | Mg (wt%) | 1.145 | 0.257 | 0.474 | 1.980 |
| Manganese | Mn (ppm) | 655.828 | 290.237 | 249.725 | 1935.000 |
| Sodium | Na (wt%) | 1.764 | 0.392 | 0.710 | 3.299 |
| Phosphorus | P (wt%) | 0.073 | 0.017 | 0.031 | 0.132 |
| Lead | Pb (ppm) | 22.858 | 4.484 | 13.471 | 47.771 |
| Selenium | Se (ppm) | 0.193 | 0.132 | 0.100 | 0.994 |
| Titanium | Ti (wt%) | 0.499 | 0.171 | 0.221 | 1.186 |
| Zinc | Zn (ppm) | 63.274 | 14.307 | 22.884 | 97.526 |