| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.267 | 0.785 | 1.946 | 6.939 |
| Arsenic | As (ppm) | 4.954 | 1.941 | 1.327 | 17.739 |
| Calcium | Ca (wt%) | 2.958 | 1.852 | 0.225 | 9.044 |
| Copper | Cu (ppm) | 13.659 | 15.851 | 5.166 | 153.460 |
| Iron | Fe (wt%) | 1.945 | 0.390 | 0.878 | 3.359 |
| Mercury | Hg (ppm) | 0.027 | 0.013 | 0.010 | 0.098 |
| Magnesium | Mg (wt%) | 0.712 | 0.344 | 0.166 | 2.943 |
| Manganese | Mn (ppm) | 298.092 | 72.948 | 131.447 | 635.413 |
| Sodium | Na (wt%) | 0.458 | 0.088 | 0.307 | 0.898 |
| Phosphorus | P (wt%) | 0.041 | 0.012 | 0.010 | 0.084 |
| Lead | Pb (ppm) | 19.663 | 4.345 | 9.227 | 34.977 |
| Selenium | Se (ppm) | 0.250 | 0.136 | 0.100 | 0.956 |
| Titanium | Ti (wt%) | 0.218 | 0.029 | 0.119 | 0.319 |
| Zinc | Zn (ppm) | 66.986 | 66.814 | 21.256 | 704.159 |