| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.348 | 0.689 | 1.073 | 5.057 |
| Arsenic | As (ppm) | 6.599 | 2.119 | 3.210 | 17.886 |
| Calcium | Ca (wt%) | 9.467 | 2.907 | 2.589 | 26.290 |
| Copper | Cu (ppm) | 15.010 | 4.483 | 5.031 | 38.734 |
| Iron | Fe (wt%) | 1.648 | 0.366 | 0.530 | 3.375 |
| Mercury | Hg (ppm) | 0.023 | 0.008 | 0.010 | 0.044 |
| Magnesium | Mg (wt%) | 0.771 | 0.341 | 0.279 | 2.760 |
| Manganese | Mn (ppm) | 408.999 | 110.711 | 159.613 | 741.683 |
| Sodium | Na (wt%) | 0.273 | 0.166 | 0.071 | 0.984 |
| Phosphorus | P (wt%) | 0.072 | 0.036 | 0.021 | 0.197 |
| Lead | Pb (ppm) | 13.614 | 2.690 | 7.598 | 20.573 |
| Selenium | Se (ppm) | 0.564 | 0.399 | 0.105 | 2.359 |
| Titanium | Ti (wt%) | 0.211 | 0.058 | 0.069 | 0.404 |
| Zinc | Zn (ppm) | 57.415 | 23.716 | 20.066 | 182.063 |