| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.519 | 0.630 | 4.497 | 7.716 |
| Arsenic | As (ppm) | 2.696 | 2.179 | 0.851 | 17.091 |
| Calcium | Ca (wt%) | 2.644 | 0.677 | 1.394 | 4.287 |
| Copper | Cu (ppm) | 1.402 | 0.960 | 1.000 | 9.165 |
| Iron | Fe (wt%) | 6.509 | 1.360 | 3.654 | 9.217 |
| Mercury | Hg (ppm) | 0.035 | 0.014 | 0.010 | 0.069 |
| Magnesium | Mg (wt%) | 1.030 | 0.261 | 0.519 | 1.739 |
| Manganese | Mn (ppm) | 1305.250 | 243.781 | 831.112 | 1892.440 |
| Sodium | Na (wt%) | 1.588 | 0.233 | 0.761 | 1.897 |
| Phosphorus | P (wt%) | 0.069 | 0.016 | 0.032 | 0.108 |
| Lead | Pb (ppm) | 26.374 | 3.115 | 20.217 | 36.313 |
| Selenium | Se (ppm) | 0.142 | 0.043 | 0.100 | 0.357 |
| Titanium | Ti (wt%) | 1.081 | 0.196 | 0.668 | 1.649 |
| Zinc | Zn (ppm) | 97.565 | 18.963 | 61.371 | 163.088 |