| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.099 | 0.902 | 3.147 | 8.495 |
| Arsenic | As (ppm) | 3.162 | 2.861 | 0.484 | 21.881 |
| Calcium | Ca (wt%) | 1.502 | 0.623 | 0.318 | 4.205 |
| Copper | Cu (ppm) | 11.541 | 2.262 | 7.349 | 23.223 |
| Iron | Fe (wt%) | 2.662 | 0.384 | 1.724 | 4.798 |
| Mercury | Hg (ppm) | 0.037 | 0.010 | 0.012 | 0.092 |
| Magnesium | Mg (wt%) | 0.630 | 0.162 | 0.255 | 1.526 |
| Manganese | Mn (ppm) | 904.077 | 161.736 | 238.218 | 1619.340 |
| Sodium | Na (wt%) | 1.615 | 0.375 | 0.891 | 2.739 |
| Phosphorus | P (wt%) | 0.069 | 0.019 | 0.035 | 0.173 |
| Lead | Pb (ppm) | 25.176 | 9.597 | 11.547 | 151.088 |
| Selenium | Se (ppm) | 0.123 | 0.030 | 0.100 | 0.294 |
| Titanium | Ti (wt%) | 0.668 | 0.119 | 0.233 | 1.209 |
| Zinc | Zn (ppm) | 50.715 | 10.607 | 26.574 | 125.369 |