| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.221 | 1.053 | 0.586 | 4.402 |
| Arsenic | As (ppm) | 1.659 | 0.555 | 0.615 | 2.787 |
| Calcium | Ca (wt%) | 0.326 | 0.236 | 0.020 | 0.923 |
| Copper | Cu (ppm) | 6.160 | 2.167 | 2.319 | 11.142 |
| Iron | Fe (wt%) | 1.622 | 0.701 | 0.496 | 3.099 |
| Mercury | Hg (ppm) | 0.360 | 0.452 | 0.011 | 1.697 |
| Magnesium | Mg (wt%) | 0.106 | 0.066 | 0.015 | 0.241 |
| Manganese | Mn (ppm) | 557.032 | 374.996 | 102.014 | 1933.180 |
| Sodium | Na (wt%) | 0.255 | 0.168 | 0.014 | 0.580 |
| Phosphorus | P (wt%) | 0.028 | 0.009 | 0.012 | 0.047 |
| Lead | Pb (ppm) | 25.392 | 5.158 | 9.679 | 42.802 |
| Selenium | Se (ppm) | 0.132 | 0.023 | 0.101 | 0.193 |
| Titanium | Ti (wt%) | 0.678 | 0.108 | 0.432 | 0.896 |
| Zinc | Zn (ppm) | 18.083 | 7.931 | 7.369 | 33.712 |