| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.050 | 0.574 | 3.270 | 6.317 |
| Arsenic | As (ppm) | 10.283 | 1.590 | 8.310 | 16.322 |
| Calcium | Ca (wt%) | 0.189 | 0.054 | 0.102 | 0.459 |
| Copper | Cu (ppm) | 18.070 | 4.348 | 9.026 | 35.765 |
| Iron | Fe (wt%) | 3.635 | 0.386 | 2.779 | 4.783 |
| Mercury | Hg (ppm) | 0.034 | 0.011 | 0.015 | 0.171 |
| Magnesium | Mg (wt%) | 0.319 | 0.048 | 0.197 | 0.449 |
| Manganese | Mn (ppm) | 2472.060 | 927.532 | 975.561 | 5719.110 |
| Sodium | Na (wt%) | 0.222 | 0.067 | 0.106 | 0.420 |
| Phosphorus | P (wt%) | 0.052 | 0.007 | 0.042 | 0.071 |
| Lead | Pb (ppm) | 26.049 | 4.849 | 18.507 | 49.707 |
| Selenium | Se (ppm) | 0.450 | 0.072 | 0.238 | 0.606 |
| Titanium | Ti (wt%) | 0.321 | 0.036 | 0.197 | 0.378 |
| Zinc | Zn (ppm) | 137.101 | 29.967 | 88.428 | 241.326 |