| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 8.620 | 1.384 | 5.127 | 12.641 |
| Arsenic | As (ppm) | 4.027 | 1.952 | 1.100 | 15.352 |
| Calcium | Ca (wt%) | 2.851 | 1.007 | 0.736 | 4.848 |
| Copper | Cu (ppm) | 50.483 | 15.637 | 14.591 | 129.504 |
| Iron | Fe (wt%) | 6.489 | 1.619 | 2.806 | 10.754 |
| Mercury | Hg (ppm) | 0.069 | 0.055 | 0.011 | 0.672 |
| Magnesium | Mg (wt%) | 1.969 | 1.026 | 0.426 | 5.573 |
| Manganese | Mn (ppm) | 1273.410 | 336.292 | 500.689 | 3714.510 |
| Sodium | Na (wt%) | 1.531 | 0.411 | 0.519 | 3.032 |
| Phosphorus | P (wt%) | 0.093 | 0.034 | 0.041 | 0.220 |
| Lead | Pb (ppm) | 14.109 | 7.731 | 2.455 | 83.180 |
| Selenium | Se (ppm) | 0.191 | 0.111 | 0.100 | 0.681 |
| Titanium | Ti (wt%) | 0.685 | 0.214 | 0.294 | 1.304 |
| Zinc | Zn (ppm) | 108.881 | 31.453 | 49.697 | 277.699 |