| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.223 | 0.843 | 1.578 | 7.674 |
| Arsenic | As (ppm) | 4.073 | 1.269 | 1.389 | 14.308 |
| Calcium | Ca (wt%) | 4.229 | 2.184 | 0.286 | 16.360 |
| Copper | Cu (ppm) | 26.460 | 96.960 | 3.162 | 1685.790 |
| Iron | Fe (wt%) | 2.040 | 0.507 | 0.638 | 6.957 |
| Mercury | Hg (ppm) | 0.017 | 0.010 | 0.010 | 0.106 |
| Magnesium | Mg (wt%) | 0.950 | 0.441 | 0.203 | 4.601 |
| Manganese | Mn (ppm) | 335.470 | 92.074 | 72.695 | 607.397 |
| Sodium | Na (wt%) | 0.583 | 0.131 | 0.120 | 1.026 |
| Phosphorus | P (wt%) | 0.045 | 0.014 | 0.010 | 0.093 |
| Lead | Pb (ppm) | 19.801 | 6.618 | 9.998 | 119.141 |
| Selenium | Se (ppm) | 0.228 | 0.121 | 0.100 | 1.520 |
| Titanium | Ti (wt%) | 0.228 | 0.051 | 0.089 | 0.387 |
| Zinc | Zn (ppm) | 47.441 | 13.133 | 11.247 | 102.273 |