| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.319 | 0.635 | 1.638 | 7.194 |
| Arsenic | As (ppm) | 6.104 | 1.888 | 2.105 | 22.101 |
| Calcium | Ca (wt%) | 9.044 | 3.319 | 0.593 | 17.475 |
| Copper | Cu (ppm) | 14.298 | 4.555 | 1.673 | 56.809 |
| Iron | Fe (wt%) | 2.040 | 0.458 | 0.681 | 5.545 |
| Mercury | Hg (ppm) | 0.063 | 0.414 | 0.010 | 6.265 |
| Magnesium | Mg (wt%) | 2.008 | 0.694 | 0.356 | 5.435 |
| Manganese | Mn (ppm) | 431.074 | 79.329 | 180.217 | 886.382 |
| Sodium | Na (wt%) | 0.796 | 0.182 | 0.276 | 1.877 |
| Phosphorus | P (wt%) | 0.065 | 0.018 | 0.031 | 0.174 |
| Lead | Pb (ppm) | 20.733 | 3.940 | 7.023 | 46.992 |
| Selenium | Se (ppm) | 0.233 | 0.143 | 0.100 | 1.602 |
| Titanium | Ti (wt%) | 0.234 | 0.051 | 0.075 | 0.577 |
| Zinc | Zn (ppm) | 51.115 | 9.434 | 26.880 | 101.612 |