| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.812 | 1.193 | 2.726 | 8.131 |
| Arsenic | As (ppm) | 1.472 | 0.179 | 0.757 | 1.848 |
| Calcium | Ca (wt%) | 0.463 | 0.301 | 0.121 | 1.934 |
| Copper | Cu (ppm) | 9.184 | 1.660 | 5.290 | 12.818 |
| Iron | Fe (wt%) | 2.337 | 0.308 | 1.760 | 3.776 |
| Mercury | Hg (ppm) | 0.039 | 0.013 | 0.012 | 0.069 |
| Magnesium | Mg (wt%) | 0.342 | 0.260 | 0.130 | 1.671 |
| Manganese | Mn (ppm) | 632.956 | 109.080 | 361.303 | 955.444 |
| Sodium | Na (wt%) | 0.434 | 0.183 | 0.170 | 1.018 |
| Phosphorus | P (wt%) | 0.037 | 0.010 | 0.011 | 0.068 |
| Lead | Pb (ppm) | 34.833 | 8.330 | 23.362 | 59.689 |
| Selenium | Se (ppm) | 0.138 | 0.025 | 0.103 | 0.197 |
| Titanium | Ti (wt%) | 0.625 | 0.046 | 0.519 | 0.706 |
| Zinc | Zn (ppm) | 36.944 | 3.515 | 25.638 | 44.130 |