| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.005 | 0.633 | 3.931 | 7.887 |
| Arsenic | As (ppm) | 11.963 | 2.390 | 5.523 | 26.685 |
| Calcium | Ca (wt%) | 0.666 | 0.172 | 0.300 | 1.363 |
| Copper | Cu (ppm) | 18.010 | 5.528 | 7.053 | 50.246 |
| Iron | Fe (wt%) | 2.480 | 0.451 | 1.128 | 3.973 |
| Mercury | Hg (ppm) | 0.043 | 0.012 | 0.011 | 0.110 |
| Magnesium | Mg (wt%) | 0.622 | 0.114 | 0.252 | 0.970 |
| Manganese | Mn (ppm) | 515.094 | 118.738 | 248.649 | 993.229 |
| Sodium | Na (wt%) | 0.675 | 0.129 | 0.317 | 1.040 |
| Phosphorus | P (wt%) | 0.069 | 0.015 | 0.035 | 0.160 |
| Lead | Pb (ppm) | 22.890 | 3.963 | 10.090 | 46.498 |
| Selenium | Se (ppm) | 0.625 | 0.190 | 0.208 | 1.824 |
| Titanium | Ti (wt%) | 0.329 | 0.023 | 0.261 | 0.403 |
| Zinc | Zn (ppm) | 84.317 | 17.928 | 34.282 | 194.819 |