| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.064 | 0.624 | 3.639 | 7.400 |
| Arsenic | As (ppm) | 8.654 | 2.549 | 3.234 | 19.349 |
| Calcium | Ca (wt%) | 0.658 | 0.521 | 0.263 | 3.540 |
| Copper | Cu (ppm) | 15.815 | 3.040 | 9.028 | 24.664 |
| Iron | Fe (wt%) | 3.835 | 0.561 | 1.893 | 5.097 |
| Mercury | Hg (ppm) | 0.081 | 0.021 | 0.041 | 0.167 |
| Magnesium | Mg (wt%) | 0.750 | 0.163 | 0.400 | 1.477 |
| Manganese | Mn (ppm) | 1064.270 | 259.427 | 491.964 | 1542.390 |
| Sodium | Na (wt%) | 1.107 | 0.377 | 0.377 | 1.912 |
| Phosphorus | P (wt%) | 0.066 | 0.015 | 0.034 | 0.133 |
| Lead | Pb (ppm) | 38.186 | 6.334 | 20.671 | 54.506 |
| Selenium | Se (ppm) | 0.441 | 0.080 | 0.192 | 0.741 |
| Titanium | Ti (wt%) | 0.472 | 0.097 | 0.238 | 0.753 |
| Zinc | Zn (ppm) | 105.177 | 19.470 | 51.216 | 178.825 |