| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.759 | 1.327 | 1.658 | 9.291 |
| Arsenic | As (ppm) | 5.242 | 2.001 | 2.437 | 11.288 |
| Calcium | Ca (wt%) | 0.592 | 0.393 | 0.123 | 2.453 |
| Copper | Cu (ppm) | 17.424 | 13.517 | 5.334 | 104.949 |
| Iron | Fe (wt%) | 4.332 | 1.578 | 1.394 | 12.272 |
| Mercury | Hg (ppm) | 0.081 | 0.041 | 0.027 | 0.264 |
| Magnesium | Mg (wt%) | 0.863 | 0.793 | 0.088 | 4.395 |
| Manganese | Mn (ppm) | 896.133 | 274.064 | 293.770 | 1774.160 |
| Sodium | Na (wt%) | 0.616 | 0.292 | 0.203 | 1.524 |
| Phosphorus | P (wt%) | 0.043 | 0.018 | 0.012 | 0.101 |
| Lead | Pb (ppm) | 24.849 | 10.368 | 9.776 | 50.117 |
| Selenium | Se (ppm) | 0.440 | 0.174 | 0.141 | 1.104 |
| Titanium | Ti (wt%) | 0.685 | 0.163 | 0.412 | 1.183 |
| Zinc | Zn (ppm) | 68.593 | 19.305 | 21.734 | 127.512 |