| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 0.120 | 0.077 | 0.021 | 0.629 |
| Arsenic | As (ppm) | 0.695 | 0.182 | 0.306 | 1.449 |
| Calcium | Ca (wt%) | 0.117 | 0.097 | 0.010 | 0.870 |
| Copper | Cu (ppm) | 38.877 | 78.257 | 1.012 | 863.732 |
| Iron | Fe (wt%) | 0.142 | 0.144 | 0.006 | 1.402 |
| Mercury | Hg (ppm) | 0.015 | 0.008 | 0.010 | 0.079 |
| Magnesium | Mg (wt%) | 0.016 | 0.015 | 0.003 | 0.122 |
| Manganese | Mn (ppm) | 61.228 | 64.034 | 2.712 | 534.630 |
| Sodium | Na (wt%) | 0.006 | 0.003 | 0.003 | 0.019 |
| Phosphorus | P (wt%) | 0.014 | 0.014 | 0.003 | 0.139 |
| Lead | Pb (ppm) | 8.051 | 5.009 | 2.101 | 52.511 |
| Selenium | Se (ppm) | 0.131 | 0.057 | 0.100 | 0.581 |
| Titanium | Ti (wt%) | 0.268 | 0.103 | 0.087 | 0.629 |
| Zinc | Zn (ppm) | 12.986 | 16.802 | 1.064 | 183.585 |