| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.376 | 0.289 | 4.659 | 7.020 |
| Arsenic | As (ppm) | 7.352 | 4.315 | 0.481 | 30.603 |
| Calcium | Ca (wt%) | 1.491 | 0.390 | 0.736 | 3.528 |
| Copper | Cu (ppm) | 17.317 | 7.716 | 6.435 | 69.641 |
| Iron | Fe (wt%) | 2.392 | 0.649 | 1.304 | 4.634 |
| Mercury | Hg (ppm) | 0.082 | 0.024 | 0.034 | 0.258 |
| Magnesium | Mg (wt%) | 0.489 | 0.166 | 0.192 | 1.084 |
| Manganese | Mn (ppm) | 948.410 | 249.645 | 391.967 | 2016.150 |
| Sodium | Na (wt%) | 1.445 | 0.168 | 1.044 | 2.159 |
| Phosphorus | P (wt%) | 0.097 | 0.038 | 0.036 | 0.330 |
| Lead | Pb (ppm) | 110.562 | 71.711 | 31.628 | 679.939 |
| Selenium | Se (ppm) | 0.253 | 0.089 | 0.100 | 0.992 |
| Titanium | Ti (wt%) | 0.608 | 0.155 | 0.310 | 1.183 |
| Zinc | Zn (ppm) | 66.454 | 23.177 | 21.436 | 186.788 |