| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.602 | 0.819 | 3.059 | 6.790 |
| Arsenic | As (ppm) | 41.049 | 32.978 | 6.451 | 144.780 |
| Calcium | Ca (wt%) | 1.205 | 0.319 | 0.500 | 2.003 |
| Copper | Cu (ppm) | 209.574 | 224.629 | 15.946 | 867.332 |
| Iron | Fe (wt%) | 4.689 | 0.901 | 2.674 | 6.660 |
| Mercury | Hg (ppm) | 0.087 | 0.058 | 0.022 | 0.226 |
| Magnesium | Mg (wt%) | 0.773 | 0.213 | 0.311 | 1.162 |
| Manganese | Mn (ppm) | 787.655 | 153.092 | 439.438 | 1177.710 |
| Sodium | Na (wt%) | 0.809 | 0.248 | 0.209 | 1.226 |
| Phosphorus | P (wt%) | 0.096 | 0.011 | 0.075 | 0.129 |
| Lead | Pb (ppm) | 1123.110 | 1405.450 | 28.412 | 5391.960 |
| Selenium | Se (ppm) | 0.918 | 0.551 | 0.317 | 2.230 |
| Titanium | Ti (wt%) | 0.304 | 0.069 | 0.138 | 0.616 |
| Zinc | Zn (ppm) | 1500.990 | 1726.030 | 88.104 | 6674.400 |