| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.177 | 0.681 | 2.766 | 6.693 |
| Arsenic | As (ppm) | 6.934 | 1.715 | 2.411 | 11.915 |
| Calcium | Ca (wt%) | 0.955 | 0.622 | 0.183 | 3.509 |
| Copper | Cu (ppm) | 20.768 | 6.673 | 7.174 | 40.253 |
| Iron | Fe (wt%) | 3.284 | 0.470 | 1.980 | 4.298 |
| Mercury | Hg (ppm) | 0.062 | 0.006 | 0.050 | 0.077 |
| Magnesium | Mg (wt%) | 0.678 | 0.144 | 0.256 | 0.973 |
| Manganese | Mn (ppm) | 855.145 | 137.882 | 435.142 | 1204.890 |
| Sodium | Na (wt%) | 0.606 | 0.316 | 0.206 | 1.835 |
| Phosphorus | P (wt%) | 0.061 | 0.015 | 0.030 | 0.113 |
| Lead | Pb (ppm) | 41.918 | 12.041 | 22.329 | 78.538 |
| Selenium | Se (ppm) | 0.571 | 0.114 | 0.209 | 0.783 |
| Titanium | Ti (wt%) | 0.454 | 0.126 | 0.292 | 0.865 |
| Zinc | Zn (ppm) | 140.825 | 40.130 | 84.551 | 284.522 |