| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.381 | 0.275 | 4.747 | 6.732 |
| Arsenic | As (ppm) | 2.432 | 1.042 | 0.699 | 6.684 |
| Calcium | Ca (wt%) | 1.701 | 0.182 | 1.264 | 2.223 |
| Copper | Cu (ppm) | 8.126 | 2.912 | 4.594 | 31.845 |
| Iron | Fe (wt%) | 1.900 | 0.308 | 1.277 | 3.298 |
| Mercury | Hg (ppm) | 0.047 | 0.017 | 0.016 | 0.183 |
| Magnesium | Mg (wt%) | 0.524 | 0.089 | 0.335 | 0.838 |
| Manganese | Mn (ppm) | 1073.290 | 162.961 | 616.423 | 1621.180 |
| Sodium | Na (wt%) | 1.697 | 0.109 | 1.470 | 1.893 |
| Phosphorus | P (wt%) | 0.053 | 0.010 | 0.034 | 0.101 |
| Lead | Pb (ppm) | 33.276 | 15.670 | 22.442 | 187.260 |
| Selenium | Se (ppm) | 0.127 | 0.042 | 0.101 | 0.458 |
| Titanium | Ti (wt%) | 0.578 | 0.114 | 0.388 | 0.917 |
| Zinc | Zn (ppm) | 43.950 | 45.928 | 20.970 | 494.525 |