| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.775 | 1.111 | 0.539 | 5.490 |
| Arsenic | As (ppm) | 12.233 | 3.991 | 3.696 | 25.783 |
| Calcium | Ca (wt%) | 0.823 | 0.511 | 0.111 | 2.588 |
| Copper | Cu (ppm) | 12.168 | 5.904 | 4.068 | 33.841 |
| Iron | Fe (wt%) | 2.204 | 0.649 | 0.416 | 4.022 |
| Mercury | Hg (ppm) | 0.021 | 0.009 | 0.010 | 0.049 |
| Magnesium | Mg (wt%) | 0.261 | 0.083 | 0.112 | 0.453 |
| Manganese | Mn (ppm) | 807.422 | 636.491 | 220.634 | 3688.200 |
| Sodium | Na (wt%) | 0.074 | 0.030 | 0.013 | 0.153 |
| Phosphorus | P (wt%) | 0.092 | 0.039 | 0.015 | 0.196 |
| Lead | Pb (ppm) | 15.947 | 9.147 | 5.148 | 55.699 |
| Selenium | Se (ppm) | 0.977 | 0.927 | 0.108 | 5.178 |
| Titanium | Ti (wt%) | 0.143 | 0.062 | 0.031 | 0.270 |
| Zinc | Zn (ppm) | 99.717 | 31.001 | 39.542 | 184.791 |