| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.859 | 0.470 | 6.265 | 9.015 |
| Arsenic | As (ppm) | 9.031 | 7.698 | 2.291 | 41.132 |
| Calcium | Ca (wt%) | 2.723 | 0.517 | 1.830 | 5.112 |
| Copper | Cu (ppm) | 32.705 | 11.825 | 10.367 | 86.172 |
| Iron | Fe (wt%) | 6.163 | 1.988 | 2.857 | 10.577 |
| Mercury | Hg (ppm) | 0.758 | 1.719 | 0.010 | 15.322 |
| Magnesium | Mg (wt%) | 0.991 | 0.300 | 0.401 | 2.362 |
| Manganese | Mn (ppm) | 1024.930 | 268.633 | 528.063 | 1931.390 |
| Sodium | Na (wt%) | 1.553 | 0.125 | 1.017 | 2.167 |
| Phosphorus | P (wt%) | 0.100 | 0.022 | 0.056 | 0.270 |
| Lead | Pb (ppm) | 20.935 | 2.410 | 12.059 | 32.185 |
| Selenium | Se (ppm) | 0.254 | 0.072 | 0.102 | 0.596 |
| Titanium | Ti (wt%) | 0.988 | 0.368 | 0.408 | 1.845 |
| Zinc | Zn (ppm) | 112.375 | 28.097 | 60.272 | 189.087 |