| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.500 | 0.384 | 1.724 | 3.791 |
| Arsenic | As (ppm) | 9.362 | 2.279 | 4.579 | 15.299 |
| Calcium | Ca (wt%) | 0.126 | 0.091 | 0.039 | 0.476 |
| Copper | Cu (ppm) | 7.304 | 1.504 | 5.044 | 11.892 |
| Iron | Fe (wt%) | 2.069 | 0.285 | 1.377 | 2.669 |
| Mercury | Hg (ppm) | 0.025 | 0.007 | 0.012 | 0.058 |
| Magnesium | Mg (wt%) | 0.165 | 0.031 | 0.103 | 0.257 |
| Manganese | Mn (ppm) | 714.395 | 272.396 | 270.935 | 2167.940 |
| Sodium | Na (wt%) | 0.084 | 0.019 | 0.037 | 0.146 |
| Phosphorus | P (wt%) | 0.043 | 0.026 | 0.020 | 0.158 |
| Lead | Pb (ppm) | 12.394 | 2.148 | 8.477 | 23.158 |
| Selenium | Se (ppm) | 0.291 | 0.229 | 0.106 | 1.422 |
| Titanium | Ti (wt%) | 0.169 | 0.026 | 0.110 | 0.245 |
| Zinc | Zn (ppm) | 52.479 | 10.506 | 33.431 | 80.299 |