| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.592 | 0.955 | 1.652 | 6.094 |
| Arsenic | As (ppm) | 6.998 | 2.937 | 2.051 | 12.715 |
| Calcium | Ca (wt%) | 0.105 | 0.054 | 0.053 | 0.441 |
| Copper | Cu (ppm) | 6.008 | 2.192 | 1.936 | 18.994 |
| Iron | Fe (wt%) | 2.433 | 0.850 | 0.680 | 4.287 |
| Mercury | Hg (ppm) | 0.056 | 0.029 | 0.011 | 0.170 |
| Magnesium | Mg (wt%) | 0.229 | 0.069 | 0.086 | 0.414 |
| Manganese | Mn (ppm) | 606.441 | 260.060 | 140.000 | 2314.190 |
| Sodium | Na (wt%) | 0.264 | 0.104 | 0.101 | 0.630 |
| Phosphorus | P (wt%) | 0.029 | 0.006 | 0.011 | 0.046 |
| Lead | Pb (ppm) | 20.377 | 4.835 | 10.614 | 34.000 |
| Selenium | Se (ppm) | 0.356 | 0.127 | 0.105 | 0.800 |
| Titanium | Ti (wt%) | 0.220 | 0.038 | 0.118 | 0.289 |
| Zinc | Zn (ppm) | 48.841 | 13.763 | 17.000 | 90.550 |