| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.570 | 0.981 | 5.482 | 10.107 |
| Arsenic | As (ppm) | 7.012 | 3.904 | 0.398 | 25.267 |
| Calcium | Ca (wt%) | 1.649 | 0.674 | 0.520 | 3.910 |
| Copper | Cu (ppm) | 28.811 | 20.290 | 5.789 | 177.962 |
| Iron | Fe (wt%) | 4.120 | 1.189 | 1.868 | 7.870 |
| Mercury | Hg (ppm) | 0.059 | 0.087 | 0.010 | 1.203 |
| Magnesium | Mg (wt%) | 0.966 | 0.370 | 0.341 | 2.918 |
| Manganese | Mn (ppm) | 839.948 | 266.606 | 292.583 | 1935.090 |
| Sodium | Na (wt%) | 1.817 | 0.397 | 0.770 | 3.347 |
| Phosphorus | P (wt%) | 0.062 | 0.028 | 0.027 | 0.164 |
| Lead | Pb (ppm) | 11.880 | 3.350 | 2.138 | 24.885 |
| Selenium | Se (ppm) | 0.183 | 0.104 | 0.100 | 0.911 |
| Titanium | Ti (wt%) | 0.512 | 0.189 | 0.226 | 1.526 |
| Zinc | Zn (ppm) | 78.609 | 36.137 | 36.186 | 464.084 |