| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.823 | 0.242 | 5.807 | 7.694 |
| Arsenic | As (ppm) | 6.048 | 1.738 | 3.227 | 11.918 |
| Calcium | Ca (wt%) | 2.015 | 0.911 | 0.756 | 5.018 |
| Copper | Cu (ppm) | 31.882 | 8.334 | 14.455 | 54.745 |
| Iron | Fe (wt%) | 5.841 | 1.572 | 3.178 | 10.560 |
| Mercury | Hg (ppm) | 0.029 | 0.020 | 0.010 | 0.119 |
| Magnesium | Mg (wt%) | 1.393 | 0.600 | 0.437 | 3.104 |
| Manganese | Mn (ppm) | 1162.820 | 209.718 | 637.123 | 1614.850 |
| Sodium | Na (wt%) | 1.191 | 0.106 | 0.973 | 1.484 |
| Phosphorus | P (wt%) | 0.070 | 0.031 | 0.003 | 0.141 |
| Lead | Pb (ppm) | 14.593 | 2.429 | 9.331 | 20.757 |
| Selenium | Se (ppm) | 0.245 | 0.112 | 0.102 | 0.652 |
| Titanium | Ti (wt%) | 0.734 | 0.105 | 0.531 | 1.249 |
| Zinc | Zn (ppm) | 97.665 | 14.995 | 48.340 | 137.641 |