| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.545 | 0.681 | 5.712 | 9.285 |
| Arsenic | As (ppm) | 7.154 | 6.308 | 0.503 | 42.439 |
| Calcium | Ca (wt%) | 2.377 | 0.630 | 1.251 | 5.382 |
| Copper | Cu (ppm) | 20.142 | 13.483 | 1.232 | 103.557 |
| Iron | Fe (wt%) | 3.008 | 0.580 | 1.549 | 5.660 |
| Mercury | Hg (ppm) | 0.027 | 0.018 | 0.010 | 0.136 |
| Magnesium | Mg (wt%) | 0.770 | 0.231 | 0.377 | 2.326 |
| Manganese | Mn (ppm) | 617.348 | 142.042 | 311.668 | 1280.000 |
| Sodium | Na (wt%) | 2.412 | 0.382 | 1.475 | 3.428 |
| Phosphorus | P (wt%) | 0.097 | 0.018 | 0.042 | 0.167 |
| Lead | Pb (ppm) | 18.652 | 9.460 | 2.133 | 77.956 |
| Selenium | Se (ppm) | 0.248 | 0.182 | 0.100 | 1.499 |
| Titanium | Ti (wt%) | 0.362 | 0.059 | 0.229 | 0.715 |
| Zinc | Zn (ppm) | 76.938 | 33.168 | 33.288 | 409.731 |