| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.518 | 1.167 | 2.694 | 7.549 |
| Arsenic | As (ppm) | 3.374 | 1.296 | 0.577 | 9.352 |
| Calcium | Ca (wt%) | 3.019 | 2.184 | 0.820 | 20.863 |
| Copper | Cu (ppm) | 8.071 | 3.333 | 1.000 | 19.995 |
| Iron | Fe (wt%) | 3.201 | 0.532 | 1.690 | 4.270 |
| Mercury | Hg (ppm) | 0.075 | 0.026 | 0.018 | 0.147 |
| Magnesium | Mg (wt%) | 0.892 | 0.262 | 0.370 | 1.689 |
| Manganese | Mn (ppm) | 732.185 | 186.600 | 388.354 | 1462.410 |
| Sodium | Na (wt%) | 0.955 | 0.168 | 0.442 | 1.684 |
| Phosphorus | P (wt%) | 0.085 | 0.020 | 0.038 | 0.134 |
| Lead | Pb (ppm) | 35.996 | 36.699 | 12.193 | 330.897 |
| Selenium | Se (ppm) | 0.312 | 0.098 | 0.100 | 0.586 |
| Titanium | Ti (wt%) | 0.426 | 0.054 | 0.237 | 0.639 |
| Zinc | Zn (ppm) | 123.533 | 94.653 | 41.000 | 614.556 |