| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.309 | 0.387 | 2.335 | 5.446 |
| Arsenic | As (ppm) | 3.905 | 0.684 | 1.962 | 6.156 |
| Calcium | Ca (wt%) | 2.296 | 0.565 | 0.668 | 4.459 |
| Copper | Cu (ppm) | 11.532 | 2.355 | 6.141 | 24.645 |
| Iron | Fe (wt%) | 1.930 | 0.209 | 0.956 | 2.626 |
| Mercury | Hg (ppm) | 0.014 | 0.005 | 0.010 | 0.039 |
| Magnesium | Mg (wt%) | 0.671 | 0.140 | 0.278 | 1.270 |
| Manganese | Mn (ppm) | 367.770 | 61.431 | 165.590 | 676.801 |
| Sodium | Na (wt%) | 0.669 | 0.147 | 0.408 | 1.096 |
| Phosphorus | P (wt%) | 0.039 | 0.007 | 0.023 | 0.078 |
| Lead | Pb (ppm) | 20.838 | 2.462 | 9.889 | 27.660 |
| Selenium | Se (ppm) | 0.148 | 0.069 | 0.100 | 0.674 |
| Titanium | Ti (wt%) | 0.230 | 0.024 | 0.109 | 0.397 |
| Zinc | Zn (ppm) | 49.349 | 46.879 | 22.500 | 606.259 |