| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.566 | 0.566 | 3.856 | 6.600 |
| Arsenic | As (ppm) | 3.237 | 0.979 | 0.568 | 6.933 |
| Calcium | Ca (wt%) | 1.738 | 0.437 | 0.599 | 2.696 |
| Copper | Cu (ppm) | 5.244 | 4.260 | 1.000 | 18.809 |
| Iron | Fe (wt%) | 5.589 | 1.513 | 2.568 | 8.831 |
| Mercury | Hg (ppm) | 0.039 | 0.012 | 0.012 | 0.090 |
| Magnesium | Mg (wt%) | 0.858 | 0.170 | 0.456 | 1.274 |
| Manganese | Mn (ppm) | 1293.640 | 283.133 | 539.091 | 1971.720 |
| Sodium | Na (wt%) | 1.255 | 0.240 | 0.799 | 1.746 |
| Phosphorus | P (wt%) | 0.053 | 0.013 | 0.011 | 0.085 |
| Lead | Pb (ppm) | 33.456 | 9.341 | 16.754 | 75.351 |
| Selenium | Se (ppm) | 0.236 | 0.112 | 0.100 | 0.723 |
| Titanium | Ti (wt%) | 0.844 | 0.198 | 0.400 | 1.347 |
| Zinc | Zn (ppm) | 88.310 | 12.244 | 42.922 | 114.427 |