| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.502 | 0.631 | 4.260 | 8.074 |
| Arsenic | As (ppm) | 7.950 | 3.221 | 3.499 | 17.481 |
| Calcium | Ca (wt%) | 1.911 | 0.472 | 0.456 | 3.103 |
| Copper | Cu (ppm) | 22.992 | 7.270 | 9.829 | 43.654 |
| Iron | Fe (wt%) | 3.539 | 0.544 | 2.310 | 5.290 |
| Mercury | Hg (ppm) | 0.040 | 0.018 | 0.011 | 0.103 |
| Magnesium | Mg (wt%) | 0.905 | 0.290 | 0.250 | 1.507 |
| Manganese | Mn (ppm) | 622.233 | 81.184 | 366.109 | 840.289 |
| Sodium | Na (wt%) | 1.241 | 0.175 | 0.482 | 1.588 |
| Phosphorus | P (wt%) | 0.052 | 0.010 | 0.027 | 0.085 |
| Lead | Pb (ppm) | 84.385 | 66.201 | 17.867 | 314.522 |
| Selenium | Se (ppm) | 0.171 | 0.063 | 0.100 | 0.497 |
| Titanium | Ti (wt%) | 0.450 | 0.046 | 0.355 | 0.575 |
| Zinc | Zn (ppm) | 100.128 | 41.887 | 56.558 | 337.002 |