| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.400 | 0.788 | 1.790 | 7.182 |
| Arsenic | As (ppm) | 9.508 | 1.705 | 4.753 | 14.350 |
| Calcium | Ca (wt%) | 1.460 | 1.159 | 0.056 | 5.741 |
| Copper | Cu (ppm) | 15.087 | 2.580 | 8.265 | 23.398 |
| Iron | Fe (wt%) | 3.605 | 0.915 | 2.278 | 6.826 |
| Mercury | Hg (ppm) | 0.036 | 0.012 | 0.011 | 0.083 |
| Magnesium | Mg (wt%) | 0.767 | 0.361 | 0.083 | 1.794 |
| Manganese | Mn (ppm) | 867.054 | 281.645 | 156.587 | 1494.460 |
| Sodium | Na (wt%) | 0.634 | 0.285 | 0.056 | 1.853 |
| Phosphorus | P (wt%) | 0.052 | 0.010 | 0.020 | 0.080 |
| Lead | Pb (ppm) | 13.767 | 1.924 | 8.751 | 18.738 |
| Selenium | Se (ppm) | 0.337 | 0.084 | 0.118 | 0.496 |
| Titanium | Ti (wt%) | 0.289 | 0.071 | 0.113 | 0.553 |
| Zinc | Zn (ppm) | 91.576 | 22.162 | 41.382 | 134.783 |