| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 9.506 | 0.750 | 7.607 | 12.804 |
| Arsenic | As (ppm) | 6.412 | 1.860 | 3.443 | 14.795 |
| Calcium | Ca (wt%) | 2.175 | 0.628 | 0.546 | 4.151 |
| Copper | Cu (ppm) | 44.604 | 13.278 | 20.376 | 68.988 |
| Iron | Fe (wt%) | 5.815 | 0.824 | 3.857 | 9.993 |
| Mercury | Hg (ppm) | 0.040 | 0.026 | 0.010 | 0.140 |
| Magnesium | Mg (wt%) | 1.364 | 0.435 | 0.378 | 2.496 |
| Manganese | Mn (ppm) | 1191.730 | 327.232 | 721.742 | 2786.680 |
| Sodium | Na (wt%) | 1.350 | 0.546 | 0.232 | 2.819 |
| Phosphorus | P (wt%) | 0.083 | 0.018 | 0.030 | 0.135 |
| Lead | Pb (ppm) | 14.362 | 4.990 | 6.138 | 32.968 |
| Selenium | Se (ppm) | 0.192 | 0.103 | 0.100 | 0.580 |
| Titanium | Ti (wt%) | 0.551 | 0.074 | 0.364 | 0.706 |
| Zinc | Zn (ppm) | 113.235 | 15.382 | 61.004 | 142.729 |