| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.472 | 0.549 | 4.067 | 6.992 |
| Arsenic | As (ppm) | 2.266 | 0.802 | 0.801 | 5.220 |
| Calcium | Ca (wt%) | 1.734 | 0.309 | 0.776 | 2.391 |
| Copper | Cu (ppm) | 12.201 | 2.491 | 5.780 | 21.873 |
| Iron | Fe (wt%) | 3.197 | 0.650 | 1.424 | 4.418 |
| Mercury | Hg (ppm) | 0.053 | 0.016 | 0.011 | 0.129 |
| Magnesium | Mg (wt%) | 0.646 | 0.169 | 0.253 | 1.228 |
| Manganese | Mn (ppm) | 1176.100 | 249.308 | 584.354 | 2477.090 |
| Sodium | Na (wt%) | 1.495 | 0.170 | 1.032 | 2.010 |
| Phosphorus | P (wt%) | 0.057 | 0.018 | 0.014 | 0.112 |
| Lead | Pb (ppm) | 35.530 | 11.465 | 13.127 | 75.555 |
| Selenium | Se (ppm) | 0.183 | 0.053 | 0.101 | 0.416 |
| Titanium | Ti (wt%) | 0.720 | 0.163 | 0.324 | 1.055 |
| Zinc | Zn (ppm) | 49.453 | 9.973 | 24.648 | 85.529 |