| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.013 | 1.195 | 1.000 | 7.269 |
| Arsenic | As (ppm) | 7.636 | 3.257 | 4.019 | 14.100 |
| Calcium | Ca (wt%) | 0.858 | 0.173 | 0.732 | 1.780 |
| Copper | Cu (ppm) | 25.056 | 4.253 | 18.661 | 43.000 |
| Iron | Fe (wt%) | 2.733 | 0.508 | 0.940 | 3.459 |
| Mercury | Hg (ppm) | 0.070 | 0.015 | 0.050 | 0.110 |
| Magnesium | Mg (wt%) | 1.093 | 0.169 | 0.769 | 1.430 |
| Manganese | Mn (ppm) | 324.443 | 169.967 | 162.211 | 691.000 |
| Sodium | Na (wt%) | 0.891 | 0.308 | 0.616 | 1.804 |
| Phosphorus | P (wt%) | 0.074 | 0.025 | 0.052 | 0.130 |
| Lead | Pb (ppm) | 33.645 | 9.933 | 10.000 | 54.000 |
| Selenium | Se (ppm) | 0.760 | 0.250 | 0.401 | 1.344 |
| Titanium | Ti (wt%) | 0.256 | 0.054 | 0.038 | 0.314 |
| Zinc | Zn (ppm) | 77.015 | 12.413 | 30.000 | 96.980 |