| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.126 | 0.282 | 4.223 | 6.300 |
| Arsenic | As (ppm) | 6.373 | 3.581 | 0.656 | 21.861 |
| Calcium | Ca (wt%) | 1.122 | 0.153 | 0.753 | 1.542 |
| Copper | Cu (ppm) | 9.263 | 1.664 | 2.709 | 16.678 |
| Iron | Fe (wt%) | 2.243 | 0.403 | 0.917 | 4.299 |
| Mercury | Hg (ppm) | 0.066 | 0.017 | 0.027 | 0.158 |
| Magnesium | Mg (wt%) | 0.259 | 0.052 | 0.122 | 0.486 |
| Manganese | Mn (ppm) | 1135.250 | 224.502 | 536.052 | 2623.980 |
| Sodium | Na (wt%) | 1.454 | 0.094 | 1.148 | 1.843 |
| Phosphorus | P (wt%) | 0.067 | 0.014 | 0.042 | 0.120 |
| Lead | Pb (ppm) | 42.790 | 14.937 | 24.484 | 114.522 |
| Selenium | Se (ppm) | 0.131 | 0.034 | 0.100 | 0.336 |
| Titanium | Ti (wt%) | 0.893 | 0.214 | 0.316 | 1.432 |
| Zinc | Zn (ppm) | 33.187 | 6.083 | 14.930 | 65.255 |