| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.250 | 0.221 | 4.527 | 6.012 |
| Arsenic | As (ppm) | 9.262 | 1.773 | 5.662 | 17.588 |
| Calcium | Ca (wt%) | 0.242 | 0.065 | 0.169 | 0.448 |
| Copper | Cu (ppm) | 11.965 | 1.632 | 6.681 | 17.325 |
| Iron | Fe (wt%) | 2.972 | 0.347 | 2.133 | 4.111 |
| Mercury | Hg (ppm) | 0.036 | 0.008 | 0.025 | 0.078 |
| Magnesium | Mg (wt%) | 0.360 | 0.029 | 0.257 | 0.431 |
| Manganese | Mn (ppm) | 735.031 | 142.956 | 334.193 | 1060.670 |
| Sodium | Na (wt%) | 0.522 | 0.037 | 0.374 | 0.615 |
| Phosphorus | P (wt%) | 0.049 | 0.007 | 0.026 | 0.069 |
| Lead | Pb (ppm) | 22.014 | 3.213 | 17.591 | 34.595 |
| Selenium | Se (ppm) | 0.415 | 0.058 | 0.261 | 0.547 |
| Titanium | Ti (wt%) | 0.307 | 0.019 | 0.272 | 0.431 |
| Zinc | Zn (ppm) | 75.992 | 5.809 | 55.965 | 90.700 |