| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 8.703 | 0.974 | 7.184 | 11.268 |
| Arsenic | As (ppm) | 2.333 | 0.937 | 0.636 | 4.549 |
| Calcium | Ca (wt%) | 3.175 | 0.609 | 2.179 | 4.912 |
| Copper | Cu (ppm) | 33.675 | 7.737 | 23.023 | 66.508 |
| Iron | Fe (wt%) | 5.100 | 0.888 | 3.123 | 7.707 |
| Mercury | Hg (ppm) | 0.034 | 0.027 | 0.010 | 0.183 |
| Magnesium | Mg (wt%) | 1.320 | 0.494 | 0.680 | 3.120 |
| Manganese | Mn (ppm) | 867.900 | 114.000 | 597.801 | 1250.000 |
| Sodium | Na (wt%) | 2.044 | 0.195 | 1.362 | 2.576 |
| Phosphorus | P (wt%) | 0.082 | 0.020 | 0.045 | 0.170 |
| Lead | Pb (ppm) | 9.236 | 1.680 | 5.120 | 12.949 |
| Selenium | Se (ppm) | 0.160 | 0.065 | 0.100 | 0.451 |
| Titanium | Ti (wt%) | 0.673 | 0.086 | 0.482 | 0.937 |
| Zinc | Zn (ppm) | 92.565 | 10.341 | 58.648 | 124.883 |