| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.752 | 0.373 | 6.593 | 8.936 |
| Arsenic | As (ppm) | 10.158 | 5.169 | 1.972 | 27.240 |
| Calcium | Ca (wt%) | 2.503 | 0.463 | 1.594 | 3.518 |
| Copper | Cu (ppm) | 21.760 | 5.907 | 4.804 | 36.373 |
| Iron | Fe (wt%) | 3.426 | 0.892 | 1.249 | 6.178 |
| Mercury | Hg (ppm) | 0.061 | 0.037 | 0.011 | 0.155 |
| Magnesium | Mg (wt%) | 0.953 | 0.213 | 0.456 | 1.602 |
| Manganese | Mn (ppm) | 726.741 | 178.415 | 322.510 | 1444.760 |
| Sodium | Na (wt%) | 1.975 | 0.230 | 1.329 | 2.497 |
| Phosphorus | P (wt%) | 0.088 | 0.025 | 0.029 | 0.161 |
| Lead | Pb (ppm) | 56.074 | 55.437 | 7.071 | 243.942 |
| Selenium | Se (ppm) | 0.311 | 0.182 | 0.100 | 0.943 |
| Titanium | Ti (wt%) | 0.551 | 0.139 | 0.333 | 0.999 |
| Zinc | Zn (ppm) | 101.731 | 45.220 | 27.585 | 255.948 |