| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 8.181 | 0.556 | 5.303 | 10.660 |
| Arsenic | As (ppm) | 7.275 | 1.961 | 3.435 | 13.455 |
| Calcium | Ca (wt%) | 0.826 | 0.354 | 0.124 | 2.934 |
| Copper | Cu (ppm) | 41.154 | 11.841 | 11.734 | 84.276 |
| Iron | Fe (wt%) | 5.494 | 2.001 | 2.644 | 20.168 |
| Mercury | Hg (ppm) | 0.118 | 0.047 | 0.024 | 0.318 |
| Magnesium | Mg (wt%) | 0.891 | 0.288 | 0.380 | 2.200 |
| Manganese | Mn (ppm) | 648.865 | 218.847 | 164.127 | 1734.060 |
| Sodium | Na (wt%) | 0.896 | 0.224 | 0.353 | 2.269 |
| Phosphorus | P (wt%) | 0.068 | 0.018 | 0.026 | 0.128 |
| Lead | Pb (ppm) | 9.138 | 2.341 | 4.745 | 15.265 |
| Selenium | Se (ppm) | 1.190 | 0.493 | 0.257 | 2.886 |
| Titanium | Ti (wt%) | 0.670 | 0.063 | 0.518 | 0.874 |
| Zinc | Zn (ppm) | 83.734 | 21.040 | 45.353 | 219.638 |