| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.899 | 0.660 | 3.590 | 7.296 |
| Arsenic | As (ppm) | 4.800 | 0.745 | 2.839 | 7.067 |
| Calcium | Ca (wt%) | 2.370 | 1.107 | 0.919 | 6.586 |
| Copper | Cu (ppm) | 15.495 | 4.570 | 1.689 | 37.935 |
| Iron | Fe (wt%) | 2.965 | 0.724 | 1.754 | 6.770 |
| Mercury | Hg (ppm) | 0.032 | 0.045 | 0.010 | 0.319 |
| Magnesium | Mg (wt%) | 0.848 | 0.323 | 0.279 | 2.040 |
| Manganese | Mn (ppm) | 591.473 | 131.166 | 339.206 | 1077.950 |
| Sodium | Na (wt%) | 1.051 | 0.107 | 0.665 | 1.299 |
| Phosphorus | P (wt%) | 0.079 | 0.012 | 0.042 | 0.153 |
| Lead | Pb (ppm) | 24.440 | 5.471 | 15.463 | 47.943 |
| Selenium | Se (ppm) | 0.112 | 0.020 | 0.100 | 0.200 |
| Titanium | Ti (wt%) | 0.450 | 0.170 | 0.212 | 1.276 |
| Zinc | Zn (ppm) | 86.946 | 30.789 | 50.037 | 198.070 |